HomeMy WebLinkAboutResolution 446-2025 RESOLUTION NO. 446 - 2025
A RESOLUTION OF THE BOARD OF COUNTY COMMISSIONERS OF
MONROE COUNTY, FLORIDA ADOPTING THE 2025 UPDATE OF THE
LOCAL MITIGATION STRATEGY AS REQUIRED BY STATE AND
FEDERAL REGULATIONS TO QUALIFY FOR CERTAIN MITIGATION
GRANT FUNDING
WHEREAS, Monroe County adopted a Local Mitigation Strategy (LMS) in 1999, with
updates in 2005, 2010, 2015, and 2020;
WHEREAS, Monroe County and the cities of Key West, Key Colony Beach, Layton,
Islamorada, and Marathon have experienced hurricanes and other natural hazards that pose risks
to public health and safety and may cause serious property damage;
WHEREAS, the Robert T. Stafford Disaster Relief and Emergency Management Act, as
amended by the Disaster Mitigation Act of 2000, requires local jurisdictions to adopt mitigation
plans in order to be eligible for post-disaster and pre-disaster grants to implement certain
mitigation projects;
WHEREAS, pursuant to Florida Administrative Code Section 27P-22, the County and
municipalities must have a formal LMS Working Group and the LMS Working Group must review
and update the LMS every 5 years to maintain eligibility for mitigation grant programs;
WHEREAS, the National Flood Insurance Reform Act of 1994, the Flood Insurance
Reform Act of 2004, as amended, requires local jurisdictions to adopt a mitigation plan to be
eligible for grants to implement certain flood mitigation projects;
WHEREAS, the planning process required by the State of Florida and the Federal
Emergency Management Agency offers the opportunity to consider natural hazards and risks and
to identify mitigation actions to reduce future impacts;
WHEREAS, the State of Florida has provided federal mitigation funds to support the
development of the Local Mitigation Strategy;
WHEREAS, the 2025 Update of the Monroe County Local Mitigation Strategy was
revised by the LMS Working Group composed of representatives of Monroe County, the cities of
Key West, Key Colony Beach, Layton, Islamorada, and Marathon, utilities, and nonprofit
organizations;
WHEREAS, the 2025 LMS Update identifies mitigation initiatives that will improve the
process used to identify and manage mitigation initiatives intended to minimize and reduce safety
threats and damage to private and public property;
WHEREAS, the 2025 LMS Update was made available to the public and public meetings
were held on March 13, 2025, and July 1, 2025 to solicit questions and comments and to present
the LMS; and
WHEREAS, the 2025 LMS Update was submitted to the Florida Division of Emergency
Management (FDEM) and FEMA for review and minor revisions were made in response to
comments; On October 1, 2025, FDEM determined that the Monroe County LMS plan is
compliant with federal standards as contained in 44 C.F.R. 201.6(b)-(d), and stated that final
approval by the State and FEMA will be issued after adoption.
NOW, THEREFORE, BE IT RESOLVED BY THE BOARD OF COUNTY
COMMISSIONERS OF MONROE COUNTY, THAT:
1. The 2025 LMS Update is adopted as an official plan of Monroe County, contingent upon
approval by the State and FEMA.
2. Any initiative identified in the 2025 LMS Update shall be subject to, and contingent upon,
budget approval, if required, at the discretion of the Board of County Commissioners, and
this resolution shall not be interpreted to mandate any such appropriations.
3. The Monroe County Emergency Management Department is directed to coordinate with
appropriate departments and to perform the annual report requirements set forth in Florida
Administrative Code Chapter 27P-22.004.
4. The Clerk is directed to mail copies of this resolution to the Florida Division of Emergency
Management and the FEMA Region 4 Office.
This resolution shall become effective upon the date of its adoption.
PASSED AND ADOPTED by the Board of County Commissioners of Monroe
County, this 12th day of November, 2025.
Mayor Michelle Lincoln Yes ..-,,.
Mayor Pro Tern David Rice Absent =`-sr
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Commissioner Craig Cates Yes
Commissioner James K. Scholl Yes ;u;_._
Commissioner Holly Merrill Raschein Yes = 7
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BOARD OF COUNTY COMMISSIONERS
A...�.� ,-d.__.,-.�. .�-�, ,,�� VIN MAD K}= 5 r i; MADOK, CLERK OF MONROE COUNTY
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Clerk Mayor Michelle Lincoln
'�y"�'<.).— ,_r•;,,._;> � ��..-ire
Monroe County Attorney
Approved as to Form And Legal Sufficiency
,Wtalif i—.14,,,,47/--
Donald Townsend,Jr.
Assistant County Attorney
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Monroe County
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TABLE OF CONTENTS
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1.6.1 Key Terms.........................................................................................................................4
1.6.2 Acronyms..........................................................................................................................5
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2.3 111I� ........................ .....................................8
2.3.1 Phase I-Planning Process....................................................................................9
2.3.2 Phase 11-Risk Assessment..................................................................................10
2.3.3 Phase III-Mitigation Strategy............................................................................11
2.3.4 Phase IV-Plan Maintenance..............................................................................11
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3.5.1 Transportation............................................................................................................36
3.5.2 Utilities.............................................................................................................................36
3.6 a��nd Use......................................311117
3.6.1 Rate of Growth Ordinance..................................................................................42
3.111117 a�rid ...........................................4�11114�1111
3.7.1 Wages and Employment.....................................................................................44
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4111,113 Assess�riie &Ass u r�n a���'Is.53
4111.411, Asse"t .............................................................5` 6
4.4.1 Building Exposure...................................................................................................56
4.4.2 Critical Facilities and Infrastructure Exposure......................................57
4111.5 ........59
4.5.1 Coastal Erosion..........................................................................................................59
4.5.2 Drought...........................................................................................................................67
4.5.3 Extreme Heat...............................................................................................................74
4.5.4 Flood..................................................................................................................................81
4.5.5 Sea Level Rise............................................................................................................104
4.5.6 Severe Storms and Tornadoes......................................................................120
4.5.7 Tropical Cyclones....................................................................................................147
4.5.8 Wildfire...........................................................................................................................176
4.5.9 Cyber Attack..............................................................................................................189
4.5.10 Radiological Incident...........................................................................................194
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5.3 Assess��nrie d�k���,Iigs............................206
5.3.1 Planning and Regulatory Capability........................................................206
5.3.2 Administrative and Technical Capability...............................................217
5.3.3 Fiscal Capability........................................................................................................218
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5.3.4 Education and Outreach Capability........................................................220
5.3.5 Mitigation Capability............................................................................................221
5.3.6 Political Capability..................................................................................................221
co��rl C U S"I�'�0��rl S 0��rl ............ocd��� ty.......... 222
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6......I God���s a���,id 0��A'ecti�ves....................................................223
6.1.1 Coordination with Other Planning Efforts............................................223
6.1.2 Goal Setting................................................................................................................224
6.1.3 Resulting Goals and Objectives....................................................................224
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Acti��es.... ........................ ................................225
6.2.1 Prioritization Process...........................................................................................225
6.3 U���pidate t.........................................226
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8.2 .............................................................260
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8.3.1 Role of LMSWG in Implementation,Monitoring and
Maintenance...............................................................................................................261
8.3.2 Monitoring and Maintenance Schedule................................................262
8.3.3 Maintenance Evaluation Process................................................................262
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8.4.1 Public Involvement for Five-year Update..............................................264
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A.2.1 Flood..............................................................................................................................286
A.2.2 Sea Level Rise...........................................................................................................298
A.2.3 Storm Surge...............................................................................................................301
A.2.4 Wildfire.........................................................................................................................304
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B.2.1 Flood................................................................................................................................317
B.2.2 Sea Level Rise............................................................................................................325
B.2.3 Storm Surge...............................................................................................................328
B.2.4 Wildfire...........................................................................................................................331
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C.2.2 Sea Level Rise............................................................................................................354
C.2.3 Storm Surge...............................................................................................................357
C.2.4 Wildfire.........................................................................................................................360
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D.2.1 Flood..............................................................................................................................389
D.2.2 Sea Level Rise............................................................................................................397
D.2.3 Storm Surge..............................................................................................................400
D.2.4 Wildfire.........................................................................................................................403
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E.2.1 Flood................................................................................................................................417
E.2.2 Sea Level Rise............................................................................................................425
E.2.3 Storm Surge...............................................................................................................428
E.2.4 Wildfire...........................................................................................................................431
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TABLE OF CONTENTS
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F.2.1 Flood...............................................................................................................................445
F.2.2 Sea Level Rise............................................................................................................453
F.2.3 Storm Surge..............................................................................................................456
F.2.4 Wildfire.........................................................................................................................459
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C.2.1 Preventative and Regulatory Measures...................................................C.2
C.2.2 Property Protection Measures........................................................................C.5
C.2.3 Natural Resource Protection...........................................................................C.9
C.2.4 Emergency Services Measures.....................................................................C.1 2
C.2.5 Structural Projects................................................................................................C.1 5
C.2.6 Public Information...............................................................................................C.17
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D.1.1 Step One:Preliminary Identification of Mitigation Initiatives...D.1
D.1.2 Step Two: Prioritized Mitigation Initiatives...........................................D.2
D.1.3 Step Three:Completed/Deleted/Carried Forward Initiatives...D.3
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SECTION 1: INTRODUCTION
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Section I provides a general introduction to hazard mitigation and an introduction to the Monroe County
Local Mitigation Strategy. This section contains the following subsections:
1.1 Background
1.2 Purpose and Authority
1.3 Scope
1.4 References
1.5 Plan Organization
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This document comprises a Local Mitigation Strategy for Monroe County, Florida.
Each year in the United States,natural and human-caused hazards take the lives of hundreds of people
and injure thousands more.Nationwide,taxpayers pay billions of dollars annually to help communities,
organizations,businesses, and individuals recover from disasters. These monies only partially reflect the
true cost of disasters because additional expenses incurred by insurance companies and non-govemmental
organizations are not reimbursed by tax dollars. Many natural hazards are predictable, and much of the
damage caused by hazard events can be reduced or even eliminated.
Hazards are a natural part of the environment that will inevitably continue to occur,but there is much we
can do to minimize their impacts on our communities and prevent them from resulting in disasters. Every
community faces different hazards,has different resources to draw upon in combating problems, and has
different interests that influence the solutions to those problems. Because there are many ways to deal
with hazards and many agencies that can help,there is no one solution for managing or mitigating their
effects. Planning is one of the best ways to develop a customized program that will mitigate the impacts
of hazards while accounting for the unique character of a community.
A well-prepared hazard mitigation plan will ensure that all possible activities are reviewed and
implemented so that the problem is addressed by the most appropriate and efficient solutions. It can also
coordinate activities with each other and with other goals and activities,preventing conflicts and reducing
the costs of implementing each individual activity. This plan provides a framework for all interested
parties to work together toward mitigation. It establishes the vision and guiding principles for reducing
hazard risk and proposes specific mitigation actions to reduce identified vulnerabilities.
In an effort to reduce the nation's mounting natural disaster losses, the U.S. Congress passed the Disaster
Mitigation Act of 2000 (DMA 2000)to invoke new and revitalized approaches to mitigation planning.
Section 322 of DMA 2000 emphasizes the need for state and local government entities to closely
coordinate on mitigation planning activities and makes the development of a hazard mitigation plan a
specific eligibility requirement for any local government applying for federal mitigation grant funds.
These funds include the Hazard Mitigation Grant Program(HMGP), the Building Resilient Infrastructure
and Communities (BRIC)program(formerly the Pre-Disaster Mitigation(PDM)program), and the Flood
Mitigation Assistance(FMA)Program, all of which are administered by the Federal Emergency
Management Agency(FEMA)under the Department of Homeland Security. Communities with an
adopted and federally approved hazard mitigation plan thereby become pre-positioned and more apt to
receive available mitigation funds before and after the next disaster strikes.
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SECTION 1: INTRODUCTION
This plan was prepared in coordination with FEMA Region 4 and the Florida Division of Emergency
Management(FDEM)to ensure that it meets all applicable federal and state planning requirements. A
Local Mitigation Plan Review Tool, found in Appendix A,provides a summary of FEMA and FDEM's
current minimum standards of acceptability and notes the location within this plan where each planning
requirement is met.
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The Board of County Commissioners directed the Monroe County Emergency Management Department
to coordinate and facilitate the development of the LMS, and subsequent 5-year updates, in conformance
with state and federal guidelines. This plan was developed in a joint and cooperative manner by members
of a Local Mitigation Strategy Working Group (LMSWG)which included representatives of County and
City departments, federal and state agencies, citizens, and other stakeholders. This plan will ensure all
jurisdictions in Monroe County remain eligible for federal disaster assistance including the FEMA
HMGP, BRIC, and FMA programs.
This plan has been prepared in compliance with Section 322 of the Robert T. Stafford Disaster Relief and
Emergency Assistance Act(Stafford Act or the Act), 42 U.S.C. 5165, enacted under Section 104 of the
Disaster Mitigation Act of 2000, (DMA 2000)Public Law 106-390 of October 30, 2000, as implemented
at CFR 201.6 and 201.7 dated October 2007. Additionally,this plan meets the requirements set forth by
the Florida Administrative Code Chapter 27P-22.
This plan will be adopted by each participating jurisdiction in accordance with standard local procedures.
Copies of adoption resolutions are provided in Section 9 Plan Adoption.
This document comprises a Multi-Jurisdictional Local Mitigation Strategy for Monroe County. The
planning area includes all incorporated municipalities and unincorporated areas in the region. All
participating jurisdictions, along with additional local entities, are listed in Table 1.1.
lt�he������4euse
Participating,3urisdictions Participating Local Entities
Monroe County Florida Keys Aqueduct Authority(FKAA)
City of Key Colony Beach Florida Keys Electric Cooperative(FKEC)
City of Key West KEYS Energy Services
City of Layton College of the Florida Keys
City of Marathon
Islamorada Village of Islands
The focus of this plan is on those hazards deemed"high"or"moderate"priority hazards for the planning
area, as determined through the risk and vulnerability assessments. Lower priority hazards will continue
to be evaluated but will not necessarily be prioritized for mitigation in the action plan.
Monroe County followed the planning process prescribed by FEMA, and this plan was developed under
the guidance of a Local Mitigation Strategy Working Group (LMSWG) comprised of representatives of
County, City, and Town departments; citizens; and other stakeholders. The LMSWG conducted a risk
assessment that identified and profiled hazards that pose a risk to the planning area, assessed the planning
areal s vulnerability to these hazards, and examined each participating jurisdiction's capabilities in place
to mitigate them. The hazards profiled in this plan are listed below:
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SECTION 1: INTRODUCTION
— Flood
— Tropical Cyclones
— Severe Storms (Thunderstorm Wind, Lightning, Hail)
— Tornadoes and Waterspouts
— Wildfire
— Coastal Erosion
— Drought
— Extreme Heat
— Sea Level Rise and Other Climate Change Characteristics
— Radiological Incident
— Cyber Attack
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The following FEMA guides and reference documents were used to prepare this document:
— FEMA 386-1: Getting Started: Building Support for Mitigation Planning. September 2002.
— FEMA 3 86-2: Understanding Your Risks: Identifying Hazards and Estimating Losses. August 200 1.
— FEMA 386-3: Developing the Mitigation Plan. April 2003.
— FEMA 386-4: Bringing the Plan to Life. August 2003.
— FEMA 386-5: Using Benefit-Cost Review in Mitigation Planning. May 2007.
— FEMA 386-6: Integrating Historic Property and Cultural Resource Considerations into Hazard
Mitigation Planning. May 2005.
— FEMA 386-7: Integrating Manmade Hazards into Mitigation Planning. September 2003.
— FEMA 386-8: Multijurisdictional Mitigation Planning.August 2006.
— FEMA 386-9: Using the Hazard Mitigation Plan to Prepare Successful Mitigation Projects.August 2008.
— FEMA. Local Mitigation Plan Review Guide. October 1, 2011.
— FEMA National Fire Incident Reporting System 5.0: Complete Reference Guide. January 2008.
— FEMA. Integrating Hazard Mitigation into Local Planning: Case Studies and Tools for Community
Officials. March 1, 2013.
— FEMA Hazard Mitigation Assistance Program and Policy Guide. July 30,2024.
— FEMA. Integrating Hazard Mitigation into Local Planning: Case Studies and Tools for Community
Officials. March 1, 2013.
— FEMA. Mitigation Ideas. A Resource for Reducing Risk to Natural Hazards. January 2013.
— FEMA. FP 206-21-0002. Local Mitigation Planning Policy Guide. April 19, 2023.
— FEMA. Local Mitigation Planning Handbook. May 2023.
Additional sources used in the development of this plan, including data compiled for the Hazard
Identification and Risk Assessment, are listed in Appendix E.
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SECTION 1: INTRODUCTION
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The Monroe County Multi-Jurisdictional Local Mitigation Strategy is organized into the following
sections:
— Section 1: Introduction
Section 2: Planning Process
— Section 3: Planning Area Profile
— Section 4: Hazard Identification&Risk Assessment
— Section 5: Capability Assessment
— Section 6: Mitigation Strategy
— Section 7: Mitigation Action Plans
— Section 8: Plan Maintenance
Section 9: Plan Adoption
— Annexes
— Appendix A: Local Plan Review Tool
— Appendix B: Planning Process Documentation
— Appendix C: Mitigation Alternatives
— Appendix D: Mitigation Prioritization Process
— Appendix E: References
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T,6.7 KEYTERMS
The following common terms are used in the Local Mitigation Strategy:
— Disaster means the occurrence of widespread or severe damage, injury, loss of life or property,or
such severe economic or social disruption that supplemental disaster relief assistance is necessary for
the affected political jurisdiction(s)to recover and alleviate the damage,loss,hardship, or suffering
caused thereby.
— Flood Hazard Area or Floodplain is the area adjoining a river, stream, shoreline, or other body of
water that is subject to partial or complete inundation. The area predicted to flood during the I%
annual chance flood, sometimes referred to as the "I 00-year"flood.
— Hazard is defined as the natural or technological phenomenon, event, or physical condition that has
the potential to cause property damage, infrastructure damage, other physical losses, and injuries and
fatalities.
— Mitigation is defined as actions taken to reduce or eliminate the long-term risk to life and property
from hazards. Mitigation actions are intended to reduce the need for emergency response—as
opposed to improving the ability to respond.
— National Flood Insurance Program (NFIP), located within the U.S. Department of Homeland
Security, Federal Emergency Management Agency(FEMA), is charged with preparing Flood
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SECTION 1: INTRODUCTION
Insurance Rate Maps, developing regulations to guide development, and providing insurance for
flood damage.
— Risk is defined as the potential losses associated with a hazard. Ideally,risk is defined in terms of
expected probability and frequency of the hazard occurring,people and property exposed, and
potential consequences.
"1.6.2 ACRONYMS
The following acronyms are used in the Local Mitigation Strategy:
— BOCC—Board of County Commissioners
— BRIC—Building Resilient Infrastructure and Communities grant program
— CRS—Community Rating System
— FBC—Florida Building Code
— FDEM—Florida Division of Emergency Management
— FEMA—U.S. Department of Homeland Security, Federal Emergency Management Agency
— FIRM—Flood Insurance Rate Map
— FMA—Flood Mitigation Assistance (FEMA)
— GIS—Geographic Information System
— HMGP—Hazard Mitigation Grant Program(FEMA)
— LMS—Local Mitigation Strategy
— LMSWG—Local Mitigation Strategy Working Group
— NFIP—National Flood Insurance Program(FEMA)
— NROGO—Non-Residential Rate of Growth Ordinance Allocation System
— ROGO—Rate of Growth Ordinance
— RLAA—Repetitive Loss Area Analysis
— SRL—Severe Repetitive Loss
— SFHA—Special Flood Hazard Area
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SECTION 2: PLANNING PROCESS
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This plan is an update to the 2020 Monroe County Multi-Jurisdictional Local Mitigation Strategy,which
included participation from all jurisdictions involved in this plan update: City of Key Colony Beach, City
of Key West, City of Layton, City of Marathon, and Islamorada Village of Islands. The previous plan was
approved by FEMA in January 2021.
This local mitigation strategy update involved a comprehensive review and update of each section of the
existing plan and an assessment of the success of the County and participating jurisdictions in evaluating,
monitoring and implementing the mitigation strategy outlined in their existing plans. Only the
information and data still valid from the existing plans was carried forward as applicable into this update.
The following requirements were addressed during the development of this County plan:
— Consider changes in vulnerability due to action implementation;
— Document success stories where mitigation efforts have proven effective;
— Document areas where mitigation actions were not effective;
— Document any new hazards that may arise or were previously overlooked;
— Incorporate new data or studies on hazards and risks;
— Incorporate new capabilities or changes in capabilities;
— Incorporate growth and development-related changes to inventories; and
— Incorporate new action recommendations or changes in action prioritization.
Changes by plan section are summarized as follows:
Section 1 provides an introduction to the Local Mitigation Strategy and remains largely unchanged from
the previous update.
Section 2 has been updated to reflect the 2025 planning process. This section describes the combined
CRS and DMA compliant planning process the consultants used to facilitate the LMSWG through this
LMS update and summarizes public outreach and agency coordination efforts that were conducted
throughout the plan update process to meet the more rigorous requirements of the 2017 CRS
Coordinator's Manual, in addition to DMA requirements. Detailed documentation of the planning process
is compiled separately in Appendix B. This section also presents summary data on the status of mitigation
actions from the 2020 strategy as a way to report on implementation progress of the 2020 update.
Section 3 was updated to reflect the most up-to-date population, demographic, economic, and housing
statistics. Details on land use and growth trends were updated to reflect recent changes in county-wide
growth management strategies.
Section 4 presents the hazard identification,hazard profiles, and vulnerability assessment findings.
Section 4.2 provides a comparison of the hazards addressed in the 2023 State of Florida Enhanced Hazard
Mitigation Plan and the 2020 Monroe County Multi-Jurisdictional Local Mitigation Strategy and provides
the final decision made by the LMSWG as to which hazards should be included in this 2025 plan update.
Updated data has been incorporated into each hazard profile.New vulnerability analyses were performed
based on updated parcel data and population estimates. Where still relevant, data from the 2020 LMS was
carried forward and incorporated into this section. In addition to the specific changes in hazard analyses
identified in Section 4.3 and 4.5,the following items were also addressed in this 2025 plan update:
GIS was used,to the extent data allowed,to analyze the priority hazards as part of the vulnerability
assessment.
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SECTION 2: PLANNING PROCESS
— The discussion on growth and development trends was enhanced utilizing 2023 American
Community Survey data.
— An effort was made to provide underserved communities and vulnerable populations with
opportunities to participate in and contribute to the plan update process. Engagement opportunities
were provided through the public survey, the plan website, and stakeholder coordination.
Section 5 was updated to reflect current local regulatory, administrative, fiscal, and other capabilities,
including changes that have occurred in the last five years. This section was also updated to include a
more detailed discussion of continued compliance with the NFIP, including how each jurisdiction
manages substantial damage and substantial improvement.
Section 6 presents the mitigation strategy. The goals have been updated to reflect LMSWG and
community priorities. This section also discusses the categories of mitigation alternatives considered and
the process used to prioritize mitigation actions. For the LMS update,this process differs from the
community's additional HMA prioritization process, which is detailed in Appendix D. This section also
details completed and deleted actions from the 2020 strategy as a way to report on implementation
progress and separate these removed actions from those that the county and participating jurisdictions will
be pursuing moving forward.
Section 7 presents the Mitigation Action Plan which presents all continued and new actions that will be
pursued by the participating jurisdictions. Mitigation action status updates are provided for actions that
were carried forward from the 2020 plan to explain progress made or barriers to implementation.
Section 8 outlines the process for distribution, adoption, implementation, and maintenance of the plan.
This section was updated to reflect recent and upcoming plan integration opportunities.
Section 9 contains all applicable documentation of plan adoption from all participating communities.
The plan annexes detail additional risk, capability,NFIP compliance, and mitigation strategy information
for each participating community.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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The planning process for preparing the Monroe County Multi-Jurisdictional Local Mitigation Strategy
was based on DMA planning requirements and FEMA's associated guidance. This guidance is structured
around a four-phase process:
Planning Process;
Risk Assessment;
3 Mitigation Strategy; and
41 Plan Maintenance.
Into this process,the planning consultant integrated a more detailed 10-step planning process used for
FEMA's Community Rating System(CRS) and Flood Mitigation Assistance (FMA)programs. Thus,the
modified 10-step process used for this plan meets the requirements of six major programs: FEMA's
Hazard Mitigation Grant Program(HMGP); Building Resilient Infrastructure&Communities (BRIO)
Program; CRS Program; FMA Program; Severe Repetitive Loss Program; and new flood control projects
authorized by the U.S. Army Corps of Engineers (USAGE).
Table 2.1 shows how the 10-step CRS planning process aligns with the four phases of hazard mitigation
planning pursuant to the Disaster Mitigation Act of 2000.
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SECTION 2: PLANNING PROCESS
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Phase I-Planning Process
§201.6(c)(1) Step 1. Organize to Prepare the Plan
§201.6(b)(1) Step 2. Involve the Public
§201.6(b)(2) &(3) Step 3. Coordinate
Phase II-Risk Assessment
§201.6(c)(2)(i) Step 4. Assess the Hazard
§201.6(c)(2)(ii) &(iii) Step 5. Assess the Problem
Phase III-Mitigation Strategy
§201.6(c)(3)(i) Step 6. Set Goals
§201.6(c)(3)(ii) Step 7. Review Possible Activities
§201.6(c)(3)(iii) Step 8. Draft an Action Plan
Phase IV-Plan Maintenance
§201.6(c)(5) Step 9. Adopt the Plan
§201.6(c)(4) Step 10. Implement, Evaluate and Revise the Plan
The process followed for the preparation of this plan, as outlined in Table 2.1 above, is as follows:
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
2.3. PROCESS
Planning Step 1:Organize to Prepare the Plan
With the County's commitment to participate in the DMA planning process, community officials worked
to establish the framework and organization for development of the plan. An initial meeting was held with
key community representatives to discuss the organizational aspects of the plan development process.
Monroe County Emergency Management led the effort to reorganize and coordinate for the plan update.
Consultants from WSP assisted by facilitating the planning process and preparing the plan document.
Planning Step 2:Involve the Public
Public involvement in the development of the plan was sought using various methods, as detailed in
Section 2.6.
Planning Step 3: Coordinate
The existing LMSWG, formed for development of the 2020 Monroe County Multi-Jurisdictional Local
Mitigation Strategy, was reconvened for this plan update. Membership was updated where necessary to
ensure each community had adequate representation from staff and stakeholders. More details on the
LMSWG are provided in Section 2.4. Stakeholder coordination was incorporated into the formation of the
LMSWG and was also sought through additional outreach methods. These efforts are detailed in Section
2.8 and documentation of additional stakeholder outreach is provided in Appendix B.
Coordination with Other Community Planning Efforts and Hazard Mitigation Activities
In addition to stakeholder involvement, coordination with other community planning efforts was also seen
as paramount to the success of this plan. Mitigation planning involves identifying existing policies, tools,
and actions that will reduce a community's risk and vulnerability to hazards. Communities in the Monroe
County use a variety of planning mechanisms, such as comprehensive plans, subdivision regulations,
building codes, and ordinances to guide growth and development. Integrating existing planning efforts,
mitigation policies, and action strategies into this plan establishes a credible and comprehensive plan that
ties into and supports other community programs. As detailed in Table 2.2,the development of this plan
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SECTION 2: PLANNING PROCESS
incorporated information from existing plans, studies,reports, and initiatives as well as other relevant data
from neighboring communities and other jurisdictions.
These and other documents were reviewed and considered, as appropriate, during the collection of data to
support the planning process and plan development. Data from these sources was incorporated into the
risk and vulnerability assessment and was used in determining the capability of each jurisdiction to
implement certain mitigation strategies. The Risk Assessment is presented in Section 4 and the Capability
Assessment can be found in Section 5.
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Resource Referenced Use in this Plan
Where available,each community's comprehensive plan was
referenced to develop the Planning Area Profile in Section 3.
Local Comprehensive Plans Local land use and comprehensive plans were also used to
develop Mitigation Action Plans in Section 7 and were
referenced in the Capability Assessment in Section S.
Local Ordinances(Flood Damage Local ordinances were referenced in the Capability Assessment
Prevention Ordinances,Subdivision in Section 5 and where applicable for updates or enforcement
Ordinances,Zoning Ordinances,etc) in Mitigation Action Plans in Section 7.
Monroe County and Incorporated
Areas Flood Insurance Stud (FIS) FIS reports were referenced in the preparation of the flood
y hazard profile in Section 4.
Report
Monroe County Comprehensive The CEMP was referenced in the preparation of the wildfire
Emergency Management Plan (CEMP), hazard profile in Section 4 and in the Capability Assessment in
January 2022 Section 5.
Florida Department of Environmental These two plans were referenced in the preparation of the
Protection Critically Eroded Beaches coastal erosion hazard profile in Section 4.
Report(2019) and Strategic Beach
Management Plan: Florida Keys Region
The previous plan was referenced in compiling the Hazard
Monroe County Multi-Jurisdictional Identification and Risk Assessment in Section 4 and in
Local Mitigation Plan,2020 reporting on implementation status and developing the
Mitigation Action Plans in Section 2 and Section 7, respectively.
This is an operational framework intended to help Monroe
Monroe County Post-Disaster Recovery County navigate resources that are available for long-term
Strategy recovery; it was used to identify post-disaster mitigation
policies and procedures,detailed in Section 5.
Monroe County Recovery Plan,October This plan was used to identify post-disaster mitigation policies
2009 and procedures,detailed in Section 5.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
2,32 PHASE
ASSESSMENT
Planning Steps 4 and 5: Identify/Assess the Hazard and Assess the Problem
The LMSWG completed a comprehensive effort to identify, document, and profile all hazards that have,
or could have, an impact on the planning area. Geographic information systems (GIS)were used to
display, analyze, and quantify hazards and vulnerabilities. A draft of the risk and vulnerability
assessment was made available on the plan website for the LMSWG, stakeholders, and the public to
review and comment.
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SECTION 2: PLANNING PROCESS
The LMSWG also conducted a capability assessment to review and document the planning area's current
capabilities to mitigate risk from and vulnerability to hazards. By collecting information about existing
government programs,policies, regulations, ordinances, and emergency plans,the LMSWG could assess
those activities and measures already in place that contribute to mitigating some of the risks and
vulnerabilities identified. A more detailed description of the risk assessment process and the results are
included in Section 4 Risk Assessment.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Planning Steps 6 and 7: Set Goals and Review Possible Activities
WSP facilitated a discussion with the LMSWG to review and revise the planning goals and objectives and
consider a comprehensive range of mitigation alternatives. The LMSWG also discussed a method of
selecting and defending recommended mitigation actions using a series of selection criteria. This
information is included in Section 6 Mitigation Strategy.
Planning Step 8: Draft an Action Plan
A complete first draft of the plan was prepared based on input from the LMSWG regarding the draft risk
assessment and the goals and activities identified in Planning Steps 6 and 7. This draft was shared for
LMSWG, stakeholder, and public review and comment via the plan website. LMSWG,public, and
stakeholder comments were integrated into the final draft for FDEM and FEMA Region 4 to review and
approve, contingent upon final adoption by all participating jurisdictions.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
2.3.4 PHASE IV- PLAN
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Planning Step 9: Adopt the Plan
To secure buy-in and officially implement the plan,the plan will be reviewed and adopted by all
participating jurisdictions. Resolutions will be provided in Section 9.
Planning Step 10: Implement,Evaluate and Revise the Plan
Implementation and maintenance of the plan is critical to the overall success of hazard mitigation
planning. Up to this point in the planning process,the LMSWG's efforts have been directed at
researching data, coordinating input from participating entities, and developing mitigation actions.
Section 8 Plan Maintenance provides an overview of the strategy for plan implementation and
maintenance, outlines the method and schedule for monitoring,updating, and evaluating the plan, and
discusses plan integration and how to continue public involvement.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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As with the previous plan,this LMS was developed under the guidance of a the LMSWG whose
representatives included County and City departments, federal and state agencies, citizens, and other
stakeholders. The LMSWG included 39 staff members and 43 outside stakeholders.
Table 2.3 lists the membership of the LMSWG,the agencies and jurisdictions they represented, and
members' attendance at meetings. Many of these representatives were involved in the development of the
2020 LMS and have since participated in regular plan reviews and maintenance. Additional staff from
each jurisdiction were invited to participate, as needed,to ensure representation from each community.
An effort was also made to involve additional stakeholders who could represent or coordinate with
underserved communities and vulnerable populations.
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SECTION 2: PLANNING PROCESS
The formal LMSWG meetings followed the 10 CRS Planning Steps. Agendas,minutes, and sign-in
sheets for the LMSWG meetings are included in Appendix B. The meeting dates and topics discussed are
summarized in Section 2.5 Meetings and Workshops. All LMSWG meetings were open to the public.
The DMA planning regulations and guidance stress that each local government seeking FEMA approval
of their mitigation plan must participate in the planning effort in the following ways:
— Participate in the process as part of the LMSWG;
— Detail where within the planning area the risk differs from that facing the entire area;
— Identify potential mitigation actions; and
— Formally adopt the plan.
For the Monroe County LMSWG, "participation"meant the following:
— Providing facilities for meetings;
— Attending and participating in the LMSWG meetings;
— Collecting and providing requested data(as available);
— Providing an update on previously adopted mitigation actions;
— Managing administrative details;
— Making decisions on plan process and content;
— Identifying mitigation actions for the plan;
— Reviewing and providing comments on plan drafts;
— Informing the public, local officials, and other interested parties about the planning process and
providing opportunity for them to comment on the plan;
— Coordinating and participating in the public input process; and
— Coordinating the formal adoption of the plan by local governing bodies.
Detailed summaries of LMSWG meetings are provided under Section 2.5 Meetings and Workshops,
including meeting dates, locations, and topics discussed. During the planning process,the LMSWG
members communicated through face-to-face meetings, email, and phone conversations. This continued
communication ensured that coordination was ongoing throughout the entire planning process even
though not all LMSWG members could be present at every meeting. Additionally, draft documents were
distributed via the plan website so that the LMSWG members could easily access and review them and
provide comments.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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The preparation of this plan required a series of meetings and workshops for facilitating discussion,
gaining consensus, and initiating data collection efforts with local government staff, community officials,
and other identified stakeholders. More importantly, the meetings and workshops prompted continuous
input and feedback from relevant participants throughout the drafting stages of the plan.
Table 2.4 summarizes the key meetings and workshops held by the LMSWG during the development of
the plan. In many cases,routine discussions and additional meetings were held by local staff to
accomplish planning tasks specific to their department or agency such as reporting on changes to local
capabilities,updating the status of mitigation actions, and identifying new actions. This includes data
collection meetings held between the planning team and the participating jurisdictions. These meetings
were informal and are not documented here.
Public meetings are summarized in subsection 2.6.
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Meeting Title Meeting Topic Meeting Date Meeting Location
1) Introduction to DMA and CRS
LMSWG Mtg.#1 requirements and the planning
-Project Kick- process January 30,2025 Microsoft Teams
Off 2) Review of LMSWG responsibilities
and the project schedule
1) Review the draft Hazard Monroe County
Identification &Risk Assessment
LMSWG Mtg. Emergency
#2 2) Discuss updates to local capabilities March 26,2025 Operations Center&
3) Review problem statements and
mitigation action ideas Microsoft Teams
LMSWG Mtg. 1) Review draft goals and objectives
#3 2) Review mitigation alternatives and June 5,2025 Microsoft Teams
draft mitigation strategies
LMSWG Mtg. 1) Review the draft Local Mitigation
#4 Plan July 1,2025 Microsoft Teams
2) Solicit comments and feedback
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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An important component of any mitigation planning process is public participation. Individual citizen and
community-based input provides the entire planning team with a greater understanding of local concerns
and increases the likelihood of successfully implementing mitigation actions by developing community
"buy-in" from those directly affected by the decisions of public officials. As citizens become more
involved in decisions that affect their safety,they are more likely to gain a greater appreciation of the
hazards present in their community and take the steps necessary to reduce their impact. Public awareness
is a key component of any community's overall mitigation strategy aimed at making a home,
neighborhood, school,business, or entire planning area safer from the potential effects of hazards.
Public involvement in the development of the plan was sought using various methods including open
public meetings, an interactive plan website, a public participation survey, and by making copies of draft
plan documents available for public review online and at government offices. Additionally, all LMSWG
meetings were made open to the public.
All public meetings were advertised on the plan website,which was shared on local community websites.
Where possible, advertisements were also posted on community websites and social media. Copies of
meeting announcements are provided in Appendix B. The public meetings held during the planning
process are summarized in Table 2.5.
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Meeting Title Meeting Topic Meeting Date Meeting Location
1) Introduction to the planning process
Public and project schedule March 15,2025
Microsoft Teams
Meeting#1 2) Explanation of mitigation 5pm
3) Review of hazard identification
Public 1) Review draft Hazard Mitigation Plan July 1,2025
Microsoft Teams
Meeting#2 2) Solicit comments and feedback 5pm
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The LMSWG agreed to employ a variety of public outreach methods including established public
information mechanisms and resources, such as press releases, creation of a website for the plan, a public
survey, and the collection of public and stakeholder comments on the draft plan. Table 2.6 details public
outreach efforts employed during the preparation of this plan.
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Location Date Event/Message
Plan website Ongoing Project specific website created to host meeting announcements,
meeting materials; planning process schedule,and contact information
to request additional information and/or provide comments
Community March 2025 Announcement about plan update on local government websites
websites including a link to the public survey and a link to direct users to the
plan website
Community March 2025 To reach community social media audiences, plan website and survey
social media announcements posted with information about the planning process
Community March 2025, Public meeting announcements posted with information about the
websites and June 2025 planning process and requests for feedback
social media
Local March 2025 Information on the plan update shared,including links to the plan
newspaper website and public survey
Public survey February-May Survey hosted online and made available via shareable link
2025
Draft HIRA April 2025 Draft hazard identification and risk assessment section of the plan
made available for review and comment online
Draft Capability May 2025 Draft capability assessment section of the plan made available for
Assessment review and comment online
Draft Plan June 2025 Full draft plan made available for review and comment online
A public survey was made available on the plan website and remained open for response until February to
April 2025. The public survey requested public input into the planning process,risk perception,past
hazard events, and the identification of mitigation activities to lessen the risk and impact of future hazard
events. The survey is shown in Appendix B. The survey was publicized online and made available on the
plan website. In total, 126 survey responses were received. The following is a list of high-level summary
results and analysis derived from survey responses:
— Most responses came from residents of Unincorporated Monroe County, followed by Islamorada and
Key West.
— 86%of respondents have experienced a hazard event in the County in the past. Over two thirds of
these experiences were related to hurricane and the remaining responses noted flooding events.
Around 34% of respondents specifically mentioned Hurricane Irma.
— There is significant concern among respondents about future hazard impacts. On average,respondents
rated their concern at 4.4 out of 5.
— Flood, Tropical Cyclone, and Sea Level Rise were rated the highest risk hazards. Wildfire,Drought,
and Radiological Incident were rated the lowest risk hazards.
— About 73% of respondents have taken actions to protect their home and neighborhood from hazards.
Some respondents reported property protection measures such as elevating their home, altering
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy J a iii`.m U a iii. .: .6
SECTION 2: PLANNING PROCESS
drainage patterns on their property, installing hurricane roof brackets for wind protection, or applying
for acquisition. Others reported preparedness actions such as raising furniture and valuables,having a
backup generator,trimming trees, and keeping drainage ditches cleaned out.
— Respondents favored prevention, emergency services, and property protection projects for mitigation.
Specific recommendations included, limiting development and impervious surface, drainage
maintenance, drainage improvements, and natural resource and mangrove protection.
Detailed survey results are provided in Appendix B.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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In addition to representatives of each participating jurisdiction, the LMSWG included a variety of
stakeholders. Stakeholders on the LMSWG included residents and business owners as well as
representatives from Florida Keys Aqueduct Authority(FKAA), Florida Keys Electrical Cooperative
Association(FKEC), and KEYS Energy Services, all of which are participating agencies in the plan, as
well as other local and regional agencies and Florida Department of Emergency Management(FDEM).
Input from additional stakeholders, including neighboring communities, non-profits, and other state and
federal agencies, was solicited through invitations to the open public meetings and distribution of the
public survey. However, if any additional stakeholders representing other agencies and organizations
participated through the public survey,that information is unknown due to the anonymous nature of the
survey.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Progress on the mitigation strategy developed in the previous plan is documented in this plan update.
Table 2.7 below details the status of mitigation actions from the previous plan. More detail on actions
being carried forward is provided in Section 7 Mitigation Action Plans.
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Jurisdiction Completed Deleted Carried Forward
Monroe County 16 13 11
City of Key Colony Beach 2 - 5
City of Key West 12 - 78
City of Layton 1 - 4
City of Marathon 1 - 6
Islamorada Village of Islands 1 - 6
F KAA 11 1 1
FKEC 3 2 1
KEYS Energy Services 4 - 1
College of the Florida Keys - - -
Total 51 16 113
Note:Some projects are multi-jurisdictional and may be counted more than once.
It should be noted that although some communities have few or no completed actions removed from their
mitigation action plans,this does not convey that mitigation has not been completed. Many actions that
have been carried forward into this plan update reflect ongoing implementation and progress achieved.
Details on completed and deleted actions are provided in Section 6: Mitigation Strategy. See Section 7:
Mitigation Action Plans for status updates on carried forward mitigation actions.
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy J a iii`.m U a iii. .: .6
IIC:�)Eigei"III 8
SECTION 2: PLANNING PROCESS
Community capability continues to improve with the implementation of new plans,policies, and
programs that help to promote hazard mitigation at the local level. The current state of local capabilities
for the participating jurisdictions is captured in Section 5: Capability Assessment. The participating
jurisdictions continue to demonstrate their commitment to hazard mitigation and have proven this by
meeting quarterly to implement and maintain the LMS,reconvening the LMSWG to update this multi-
jurisdictional plan, and continuing to involve the public in the hazard mitigation planning process.
Moving forward, information in this plan will be used to help guide and coordinate mitigation activities
and decisions for local plans and policies in the future. Proactive mitigation planning will help reduce the
cost of disaster response and recovery to communities and their residents by protecting critical
community facilities,reducing liability exposure, and minimizing overall community impacts and
disruptions. This plan identifies activities that can be undertaken by both the public and the private
sectors to reduce safety hazards,health hazards, and property damage.
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy J a iii`.m U a iii. .: .6
IIC:�)Eigei"III
SECTION 2: PLANNING PROCESS
Respondents favored prevention, emergency services, and property protection projects for mitigation.
Specific recommendations included, limiting development and impervious surface, drainage
maintenance, drainage improvements, and natural resource and mangrove protection.
Detailed survey results are provided in Appendix B.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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In addition to representatives of each participating jurisdiction, the LMSWG included a variety of
stakeholders. Stakeholders on the LMSWG included residents and business owners as well as
representatives from Florida Keys Aqueduct Authority(FKAA), Florida Keys Electrical Cooperative
Association(FKEC), and KEYS Energy Services, all of which are participating agencies in the plan, as
well as other local and regional agencies and Florida Department of Emergency Management(FDEM).
Input from additional stakeholders, including neighboring communities,non-profits, and other state and
federal agencies, was solicited through invitations to the open public meetings and distribution of the
public survey. However, if any additional stakeholders representing other agencies and organizations
participated through the public survey,that information is unknown due to the anonymous nature of the
survey.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Progress on the mitigation strategy developed in the previous plan is documented in this plan update.
Table 2.7 below details the status of mitigation actions from the previous plan. More detail on actions
being carried forward is provided in Section 7 Mitigation Action Plans.
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Jurisdiction Completed Deleted Carried Forward
Monroe County 16 13 11
City of Key Colony Beach 2 - 5
City of Key West 12 - 78
City of Layton 1 - 4
City of Marathon 1 - 6
Islamorada Village of Islands 1 - 6
F KAA 11 1 1
FKEC 3 2 1
KEYS Energy Services 4 - 1
College of the Florida Keys - - -
Total 51 16 113
Note:Some projects are multi-jurisdictional and may be counted more than once.
It should be noted that although some communities have few or no completed actions removed from their
mitigation action plans,this does not convey that mitigation has not been completed. Many actions that
have been carried forward into this plan update reflect ongoing implementation and progress achieved.
Details on completed and deleted actions are provided in Section 6: Mitigation Strategy. See Section 7:
Mitigation Action Plans for status updates on carried forward mitigation actions.
Community capability continues to improve with the implementation of new plans,policies, and
programs that help to promote hazard mitigation at the local level. The current state of local capabilities
for the participating jurisdictions is captured in Section 5: Capability Assessment. The participating
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy J a iii`.m U a iii. .: .6
IIC:)Eigei"III 8
SECTION 2: PLANNING PROCESS
jurisdictions continue to demonstrate their commitment to hazard mitigation and have proven this by
meeting quarterly to implement and maintain the LMS,reconvening the LMSWG to update this multi-
jurisdictional plan, and continuing to involve the public in the hazard mitigation planning process.
Moving forward, information in this plan will be used to help guide and coordinate mitigation activities
and decisions for local plans and policies in the future. Proactive mitigation planning will help reduce the
cost of disaster response and recovery to communities and their residents by protecting critical
community facilities,reducing liability exposure, and minimizing overall community impacts and
disruptions. This plan identifies activities that can be undertaken by both the public and the private
sectors to reduce safety hazards,health hazards, and property damage.
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IIC:�)Eigei"III
SECTION 3: PLANNING AREA PROFILE
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This section provides a general overview of the current conditions in Monroe County and its participating
municipalities. It consists of the following sub-sections:
3.1 Geography and Environment
3.2 Population and Demographics
3.3 Historic Properties
3.4 Housing
3.5 Infrastructure
3.6 Current and Future Land Use
3.7 Employment and Industry
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Monroe County is located at the southernmost tip of the State of Florida. The Florida Keys,which consist
of an archipelago that sweeps southwesterly from southeastern Miami-Dade County for almost 150 miles,
are located precariously between the Gulf of Mexico and the Atlantic Ocean. The area of Monroe County
located on the Florida mainland is bordered by Collier County to the north and Miami-Dade County to the
east. A location map is provided in Figure 3.1. The entire mainland portion of Monroe County is within
Everglades National Park or Big Cypress National Preserves,with only 14 total residential buildings. The
Florida Keys are characterized by long,narrow, and low-lying islands that average four to seven feet
above mean sea level. The Florida Keys archipelago includes 74 named islands identified by the County's
parcel data and detailed in Figure 3.2.
The planning area comprises a total land area of approximately 982.2 square miles of land area. Large
areas of submerged lands associated with parks and preserves also fall within Monroe County,bringing
the County's total area to approximately 3,738 square miles.
The total land area of each participating jurisdiction is listed in Table 3.1.
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Jurisdiction Total Area(sq.mi.)
Monroe County 982.20
City of Key Colony Beach 0.44
City of Key West 5.60
City of Layton 0.16
City of Marathon 8.45
Islamorada Village of Islands 6.45
Source:US Census Bureau,www.data.census.gov
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SECTION 3: PLANNING AREA PROFILE
According to the Koppen climate classification system, Monroe County has a tropical savannah climate,
characterized by consistent high temperatures(at or near sea level)with a pronounced dry season in the
winter. The region experiences an average annual high temperature of 83.7°F and an average annual low
of 74.0°F. Average annual precipitation is approximately 40.44 inches. Figure 3.3 shows the average
monthly precipitation for the Key West weather station,which approximates temperature and
precipitation of the County.
Figure 3.3-Average Monthly Temperature and Precipitation
Monthly Climate Normals(1991-2020)-KEY WEST INTL AIRPORT,FL
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As shown in the map of HUC-12 watersheds in Figure 3.4, Monroe County is split between 16 HUC-12
watersheds. Table 3.2 below lists these watersheds with the total area of the County that is included
within each.
Table 3.2-HUC 72 Basins and Area
HUC 12 Basin Name Acreage
030902021300 Everglades National Park 566,465.95
030902021400 Broad River-Taylor Slough Frontal 338,535.20
030902021500 Ponce de Leon Bay-Gulf of Mexico 82,301.87
030902030100 Florida Bay 235,639.15
030902030200 Upper Florida Keys 207.344.02
030902030300 Lower Florida Keys 231,929.13
030902030600 Yacht Channel-Gulf of Mexico 132,165.41
030902030500 Harbor Channel-Gulf of Mexico 249,625.30
030902030400 Hawk Channel-Atlantic Ocean 429,202.93
030902030700 Dry Tortugas 70.616.36
030902040800 Rooker Bay 93,816.60
030902041100 Lopez River-Lostmans River Frontal 133,566.81
030902041000 Big Cypress Swamp 612.437.14
030902041200 Pavilion Key-Gulf of Mexico 229,860.45
030902061609 Everglades National Park Frontal 44,437.67
030902061702 South Biscayne Bay 774.59
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 23
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SECTION 3: PLANNING AREA PROFILE
According to data from the U.S. Fish and Wildlife Service's National Wetlands Inventory,there are
approximately 856,455 acres of wetlands in the region. Wetland areas are shown in Figure 3.5. Acreage
by wetland type is summarized in Table 3.3.
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Wetlands Type Acreage
Estuarine and Marine Deepwater 217,198
Estuarine and Marine Wetland 446,675
Freshwater Emergent Wetland 111,943
Freshwater Forested/Shrub Wetland 80,321
Freshwater Pond 214
Lake 99
R iveri ne 6
Total 856,455
Source:USFWS National Wetlands Inventory
Natural and Beneficial Wetland Functions: The benefits of wetlands are hard to overestimate. They
provide critical habitat for many plant and animal species that could not survive in other habitats. They
are also critical for water management as they absorb and store vast quantities of storm water,helping
reduce floods and recharge aquifers. Not only do wetlands store water like sponges, they also filter and
clean water as well, absorbing toxins and other pollutants.
Monroe County is home to many parks,preserves, beaches, and other natural areas. Mainland Monroe
County is home to the western portion of Everglades National Park. There are also 11 state parks:
— Curry Hammock State Park
— Fort Zachary Taylor Historic State Park
— John Pennekamp Coral Reef State Park
— Bahia Honda State Park
— Long Key State Park
— Indian Key Historic State Park
— Dagny Johnson Key Largo Hammock Botanical State Park
— Florida Keys Overseas Heritage Trail
— Windley Key Fossil Reef Geological State Park
— San Pedro Underwater Archaeological Preserve State Park
— Lignumvitae Key Botanical State Park
The Monroe County Facilities Maintenance Department maintains 23 parks and beaches, covering more
than 100 acres.
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The U.S. Fish and Wildlife Service maintains a regular listing of threatened species, endangered species,
species of concern, and candidate species for counties across the United States. There are 59 such species
in the County. Table 3.4 below lists the species identified as threatened, endangered, or other
classification for Monroe County.
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Group Common Name Scientific Name Federal Status
Birds Piping Plover Charadrius melodus Threatened
Birds Everglade snail kit Rostrhamus sociabilis plumbeaus Endangered
Birds Roseate tern Sterna douga I l i i dougal I i i Threatened
Birds Cape Sable seaside sparrow Ammondramus maritimus Endangered
mirabilis
Birds Wood stork Mycteria Americana Threatened
Birds Red knot Calidris canutus rufa Threatened
Birds Bachman's warbler Vermivora bachmanii Endangered
Birds Crested caracara Caracara plancus audubonii Threatened
Birds Eastern Black rail Lateral Ius jamaicensis Threatened
Birds Cape Sable seaside sparrow Ammospiza maritima mirabiliis Endangered
Birds Piping Plover Charadrius melodus Threatened
Birds Everglade snail kit Rostrhamus sociabilis plumbeus Endangered
Birds Bachman's warbler Vermivora bachmanii Extinction
Birds Black-capped Petrel Vermivora bachmanii Endangered
Flowering Plants Key tree cactus Pilosocereus robinii Endangered
Flowering Plants Garber's spurge Chamaesyce garberi Threatened
Flowering Plants Sand flax Linum Arenicola Endangered
Flowering Plants Florida semaphore Cactus Consolea corallicola Endangered
Flowering Plants Wedge spurge Chamaesyce deltoidei serpyllum Endangered
Flowering Plants Florida pineland crabgrass Digitaria pauciflora Threatened
Flowering Plants Everglades bully Sideroxylon reclinatum ssp. Threatened
Flowering Plants Cape Sable Thoroughwort Chromolaena frustrate Endangered
Flowering Plants Big Pine partridge pea Chamaecrista lineata keyensis Endangered
Flowering Plants Blodgett's silverbush Argythamnia blodgettii Threatened
Flowering Plants Beach jacquemontia Jacquemontia reclinata Endangered
Flowering Plants Tiny polygala Polygala smallii Endangered
Flowering Plants Carter's mustard Warea carteri Endangered
Flowering Plants Amorpha crenulata Crenulate lead-plant Endangered
Flowering Plants Galactia smallii Small's milkpea Endangered
Flowering Plants Deltoid spurge Chamaesyce deltoidea Endangered
Flowering Plants Florida brickell-bush Brickellia mosieri Endangered
Flowering Plants Carter's Small-Flowered Linum carteri carteri Endangered
FI ax
Flowering Plants Blackbract pipewort Eriocaulon nigrobracteatum Under review
Flowering Plants Florida prarie-clover Dalea carthagenesis Endangered
Flowering Plants Pineland sandmat Chamaesyce deltoidea pinetorum Threatened
Schaus swallowtail Heraclides aristodemus
Insects Endangered
butterfly ponceanus
IIIAarvroe Courity,III:III III:
III .III it .iii iii ..Iii Iii iii III IIL...ou III III iii t iii atiii aii°m Strategy 3 a iiir.m u a i a
SECTION 3: PLANNING AREA PROFILE
Group Common Name Scientific Name Federal Status
Insects Miami Blue Butterfly Cyclargus(=Hemiargus)thomasi Endangered
Insects Florida leafwing Butterfly Anaea troglodyte floridalis Endangered
Bartram's hairstreak
Insects Butterfly Strymon acis bartrami Endangered
Insects Monarch butterfly Danaus plexippus Proposed
Threatened
Mammals Florida bonneted bat Eumops floridanus Endangered
Mammals Lower Keys marsh rabbit Sylvilagus palustris hefneri Endangered
Mammals Silver rice rat Oryzomys palustris natator Endangered
Puma(=Felis)concolor(all subs . Similarity of
Mammals Puma (=mountain lion) p Appearance
Except coryi) (Threatened)
Mammals West Indian Manatee Trichechus manatus Threatened
Mammals Key Largo wood rat Neotoma floridana smalli Endangered
Mammals Key deer Odocoileus virginianus clavium Endangered
Mammals Key Largo cotton mouse Peromyscus gossypinus Endangered
allapaticola
Mammals Florida panther Puma (=Felis) concolor coryi Endangered
Reptile Hawksbill sea turtle Eretmochelys imbricate Endangered
Reptile Eastern indigo snake Drymarchon corgis couperi Threatened
Reptile Gopher tortoise Gopherus Polyphemus Resolved Taxon
Reptile Leatherback sea turtle Dermochelys coriacea Endangered
Reptile Loggerhead sea turtle Caretta caretta Threatened
Reptile American crocodile Crocodylus acutus Threatened
Similarity of
Reptile American alligator Alligator mississippiensis Appearance
(Threatened)
Reptile Green sea turtle Chelonia mydas Threatened
Reptile Florida Keys mole skink Plestiodon egregius egregius Proposed
Threatened
Snails Stock Island tree snail Orthal icus reses(not incl.nesodr as) Threatened
y
Source: U.S.Fish&Wildlife Service(https://www.fws.gov/ /)
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Monroe County has experienced moderate population growth since 2010, approximately 14.6 percent,
according to data from the U.S. Census Bureau's Decennial Census. However,the County's population
had declined by just over 8 percent in the decade prior(2000-2010). Table 3.5 provides population counts
from 2000, 2010, and 2020 for each of the participating jurisdictions. Table 3.6 provides population
projections for Monroe County for 2020-2045. Figure 3.6 shows 2023 population density by census tract
in persons per square mile.
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2020 Census %Change
Jurisdiction Census Census Change
Population 2010-2020
Population Population 2010-2020
City of Key Colony Beach 788 797 790 -7 -0.9%
City of Key West 25,478 24,649 26,444 1,795 7.3%
City of Layton 186 184 210 26 14.1%
City of Marathon 10,255 8,297 9,689 1,392 16.8%
Islamorada Village of Islands 6,846 6,119 7,107 988 16.1%
Unincorporated Monroe County 36,036 33,044 38,634 5,590 16.9%
County Total 79,589 73,090 82,874 9,784 13.4%
State of Florida 75,982,378 78,807,370 27,538,787 2,736,877 14.6010
Source: US Census Bureau Decennial Census 2000,Decennial Census 2010;Decennial Census 2020
*Because of Layton's small size,population estimates are likely to underreport total population;the population of the
City was also reported to be 186 in 2020 by the Bureau of Economic and Business Research at the University of Florida.
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Population
Estimate 2025 2030 2035 2040 2045 2050
Monroe County 839961
Low 80,300 78,400 75,900 73,200 70,400 67,800
Medium 85,400 87,100 88,000 88,400 88,600 88,700
High 90,500 95,800 100,100 103,600 106,800 109,500
Source: Bureau of Economic and Business Research(University of Florida),Projections of Florida Population by
County,by 2025-2050,with estimates for 2022
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Table 3.7 details demographic and social characteristics of each of the participating counties compared to
the State of Florida overall according to the 2020 Decennial Census. Per this data,the Monroe County
population is older than the state average. The County has a greater proportion of individuals with high
school diplomas and Bachelor's degrees and a lower proportion of individuals with disabilities and who
speak English less than very well as compared to the state.
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Demographic&Social Characteristics Monroe County Florida
Median Age 49.7 43.0
%of Population Under 5 years old 3.7% 4.8%
%of population Over 65 years old 23.4% 22.6%
%of Population Over 25 with high school diploma 93.3% 89.6%
%of Population Over 25 with bachelor's degree or higher 37.8% 33.2%
%with Disability 11.3% 13.5%
%Speak English less than "very well" 9.4% 12.1%
Source:US Census Bureau,American Community Survey 2019-2023 5-Year Estimates
Racial characteristics of the participating jurisdictions, compared to the state average, are presented in
Table 3.8. Monroe County and its jurisdictions are predominantly white and less racially diverse than the
state as a whole. The county and its jurisdictions have a substantially smaller black population than the
state. Monroe County does have a sizable Latino population with Latinos making up 23.4% of the
county's total population, slightly lower than the state. And Latinos represent 30% of the population in
the City of Marathon,higher than the state.
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City of Key Colony Beach 81.6% 2.4% 0.9% 0.8% 1.4% 12.9%
City of Key west 61.1% 9.7% 2.3% 1.1% 3.4% 22.4%
City of Layton 78.6% 1.0% 0.0% 0.0% 1.0% 19.5%
City of Marathon 62.5% 3.8% 0.9% 0.7% 2.4% 30.0%
Islamorada Village of Islands 81% 1% 1% 0.5% 2% 15%
Unincorporated Monroe County 67.1% 4.0% 1.0% 0.7% 2.8% 24.4%
Monroe County 66.0% 5.5% 1.4% 0.8% 2.9% 23.4%
Florida 52% 15% 3% 4% 0.9% 26%
Source: US Census Bureau,American Community Survey 2019-2023 5-Year Estimates
Note:Racial statistics represent the proportion of individuals that fall in each category alone,i.e.the white population
represents the non-Hispanic white population.
Figure 3.7 displays social vulnerability information for Monroe County by census tract according to 2022
data and analysis by the Centers for Disease Control and Prevention(CDC). The CDC's Social
Vulnerability Index(SVI) indicates the relative vulnerability within census tracts based on 15 social
factors: poverty,unemployment, income, education, age, disability,household composition,minority
status, language, housing type, and transportation access. Higher social vulnerability is an indicator that a
community may be limited in its ability to respond to and recover from hazard events. Therefore,using
this SVI information can help the Region and jurisdictions to prioritize pre-disaster aid, allocate
emergency preparedness and response resources, and plan for the provision of recovery support.
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As of March 2025,Monroe County had 61 listings on the National Register of Historic Places. Three of
the listings are Historic Districts. Listing on the National Register signifies that these structures and
districts have been determined to be worthy of preservation for their historical or cultural values.
Additionally, four of these properties are also listed as National Historic Landmarks.
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Ref# Property Name Listed Date City
Dry Tortugas
70000069 Fort Jefferson National Monument 11/10/1970 Islands
Everglades
96001179 Cane Patch 11/5/1996 Nat'l Park
Everglades
96001183 Rookery Mound 11/5/1996 Nat'l Park
Everglades
96001180 Ten Thousand Islands Archeological District 11/5/1996 Nat'l Park
96001182 Bear Lake Mounds Archeological District 11/5/1996 Flamingo
06000979 Mud Lake Canal* 9/20/2006 Flamingo
79000684 Overseas Highway and Railway Bridges 8/13/1979 Florida Keys
11000860 Alligator Reef Light 12/1/2011 Islamorada
06000493 Chaves Shipwreck Site 6/15/2006 Islamorada
95000238 Florida Keys Memorial 3/16/1995 Islamorada
06000495 Herrara Shipwreck Site 6/15/2006 Islamorada
97000404 LaBranche Fishing Camp 5/9/1997 Islamorada
98000652 Lignumvitae Key Archeological and Historical District 2/16/1999 Islamorada
94000794 SAN FELIPE Shipwreck Site 8/11/1994 Islamorada
01000530 SAN PEDRO (shipwreck) 5/31/2001 Islamorada
06000501 Tres Puentes Shipwreck Site 6/15/2006 Islamorada
96000581 USS ALLIGATOR 6/6/1996 Islamorada
91001771 AFRICAN QUEEN 2/18/1992 Key Largo
84000199 Carysfort Lighthouse 10/31/1984 Key Largo
72000340 John Pennekamp Coral Reef State Park and Reserve 4/14/1972 Key Largo
04000788 Overseas Highway and Railway Bridges(Boundary Increase) 8/3/2004 Key Largo
75000562 Rock Mound Archeological Site 7/1/1975 Key Largo
02000494 USCG Cutter DUANE 5/16/2002 Key Largo
12000362 African Cemetery at Higgs Beach 6/26/2012 Key West
71000243 Armory,The 3/11/1971 Key West
01000228 Dry Tortugas National Park 10/26/1992 Key West
71000244 Fort Zachary Taylor* 3/11/1971 Key West
73000586 Gato, Eduardo H., House 4/11/1973 Key West
89001428 HA.19 (Japanese Midget Submarine) 6/30/1989 Key West
68000023 Hemingway,Ernest, House* 11/24/1968 Key West
92001879 I N G HAM (USCGC)* 4/27/1992 Key West
71000245 Key West Historic District 3/11/1971 Key West
83001430 Key West Historic District(Boundary Increase) 2/24/1983 Key West
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SECTION 3: PLANNING AREA PROFILE
Ref# Property Name Listed Date City
74000652 Little White House 2/12/1974 Key West
72000341 Martello Gallery-Key West Art and Historical Museum 6/19/1972 Key West
73000587 Old Post Office and Customshouse 9/20/1973 Key West
73000588 Porter, Dr.Joseph Y., House 6/4/1973 Key West
73000589 Sand Key Lighthouse 4/11/1973 Key West
06000957 Sloppy Joe's Bar 11/1/2006 Key West
94000633 Thompson Fish House,Turtle Cannery and Kraals 6/23/1994 Key West
73000590 U.S.Coast Guard Headquarters, Key West Station 10/15/1973 Key West
84000915 US Naval Station 5/8/1984 Key West
Veterans of Foreign Wars Walter R. Mickens Post 6021 and
12000300 William Weech American Legion Post 168 5/30/2012 Key West
76000602 West Martello Tower 6/24/1976 Key West
84000930 WESTERN UNION (schooner) 5/16/1984 Key West
06000492 Angustias Shipwreck Site 6/15/2006 Layton
06000494 El Gallo Indiano Shipwreck Site 6/15/2006 Layton
06000499 San Francisco Shipwreck Site 6/15/2006 Layton
06000500 Sueco de Arizon Shipwreck Site 6/15/2006 Layton
Lower
Matecumbe
72000342 Indian Key 6/19/1972 Key
92001243 Adderley,George, House 9/10/1992 Marathon
12000092 Sombrero Key Light 3/9/2012 Marathon
90000443 Pigeon Key Historic District 3/16/1990 Pigeon Key
06000496 El Infante Shipwreck Site 6/15/2006 Plantation
Plantation
75002123 SAN JOSE Shipwreck Site 3/18/1975 Key
Sugarloaf
82002377 Bat Tower-Sugarloaf Key 5/13/1982 Key
Summerland
10001189 American Shoal Light 1/25/2011 Key
06000497 El Rubi Shipwreck Site 6/15/2006 Tavernier
100005820 Matecumbe Methodist Church 11/30/2020 Islamorada
100006117 Matecumbe Methodist Church Cemetery 2/5/2021 Islamorada
100007123 Crane Point 10/29/2021 Marathon
Source:National Parks Service,National Register of Historic Places,March 2025
*National Historic Landmarks
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Table 3.10 and Table 3.11 provide details on housing characteristics in Monroe County and incorporated
jurisdictions according to data from the 2020 Decennial Census and 2019-2023 ACS 5-Year Estimates.
According to the 2020 Decennial Census,there are 53,961 housing units in Monroe County, of which
67.5 percent are occupied. Compared to the state, occupancy rates are lower across the county and all
incorporated jurisdictions. Approximately 39.5% of occupied units are renter-occupied. A high
percentage of renters is an indicator of higher pre-and post-disaster vulnerability because, according to
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SECTION 3: PLANNING AREA PROFILE
Cutter, et al. (2003),renters often do not have the financial resources of homeowners, are more transient,
are less likely to have information about or access to recovery aid following a disaster and are more likely
to require temporary shelter following a disaster. The City of Key West has the highest rate of renter-
occupied housing, at 55.6%. Higher rates of home ownership in some jurisdictions, including Islamorada
and unincorporated Monroe County,where owner-occupied housing rates are all above 70 percent,may
indicate that more residents in these areas are able to implement certain types of mitigation in their
homes.
The housing growth rate since 2010 has been positive in Key West(2.3%), Marathon(3.9%),
unincorporated Monroe County(4.6%), and Monroe County(2.3%) as a whole. Key Colony Beach has
experienced the largest decrease in overall housing units at-29.9 percent, followed by Layton(-9.8%),
and Islamorada(-1.1%).
Nearly 58 percent of housing units in Monroe County are detached single family homes. The next most
common housing type is 10 or more apartments,which make up 11.4 of all housing units. Apartments are
followed by mobile homes,which make up 9.5% of the county's housing; mobile homes can be more
vulnerable to certain hazards, such as tornadoes and wind storms, especially if they aren't secured with tie
downs.
Almost half of Monroe County's housing, 48.5 percent,was built prior to 1980. Age can indicate the
potential vulnerability of a structure to certain hazards. For example,Monroe County first entered the
National Flood Insurance Program in 1973. The Cities of Key Colony Beach, Key West, and Layton all
entered the NFIP in 1971,however Marathon and Islamorada did not enter the NFIP until years later. This
indicates that a significant portion of housing within Monroe County was not build to floodplain
standards.
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Housing Housing Units Percent Occupied Vacant Home
Units,Jurisdiction Units Units Change Occupied Units, Units,
(2010) (2020) (2010- (2020) Percent Percent percent
2020) (2020) (2020) (2023)
City of Key Colony
1,431 1,003 -29.9% 41.0% 79.3% 59.0% 0.0%
Beach
City of Key west 14,107 14,426 2.3% 79.6% 44.4% 20.4% 3.8%
City of Layton 184 166 -9.8% 63.3% 61.9% 36.7% 0.0%
City of Marathon 6,187 6,427 3.9% 66.7% 57.2% 33.3% 10.4%
Islamorada
Village of Islands 5,692 5,630 -1.1% 58.3% 73.0% 41.7% 0.0%
Unincorporated
25,163 26,309 4.6% 64.1% 69.4% 35.9% 13.0%
Monroe County
Monroe County 52,764 53,961 2.3% 67.5% 60.5% 32.5% 9.5%
Florida 8,989,580 9,865,350 9.7010 86.5010 65.7% 13.5% 7.5%
Source:U.S.Census Bureau 2020 Decennial Census
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Housing Characteristics Monroe County Florida
Average Household Size 2.83 2.51
%of Housing Units with no Vehicles Available 6.9% 5.9%
%of Housing Units that are mobile homes 9.5% 7.5%
Source: American Community Survey,2019-2023 5-Year Estimates
Marvroe County,
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.5.7 TRANSPORTATION
Transportation in Monroe County is unique. U.S. Route 1 (US 1), also known as the Overseas Highway,
is the single road that forms the backbone of the transportation network in the Florida Keys and serves as
the sole link to the Florida mainland. US 1 runs 126 miles from Florida City, in Miami Dade County,to
Key West. The mostly two-lane highway is maintained by the Florida Department of Transportation.
Along the route, there are 42 bridges totaling 19 miles. The Overseas Highway is a lifeline for the Keys,
serving as both a highway and a"main street;"it drives the local economy by bringing food,materials,
and tourists from the mainland.
In addition to US 1,Monroe County maintains approximately 450 miles of roads, including 37 bridges.
Card Sound Road—a toll road—serves as an alternate to US Highway 1 in some places. Mainland
Monroe is primarily government owned parks and preserves and has few roads. The only County
maintained road is Loop Road, a 16 mile loop off of US 41 that crosses the Miami Dade and Collier
County lines. Key West,Marathon, Key Colony Beach, Islamorada, and Layton are all responsible for the
streets within their boundaries that are not maintained by the state or the county.
The County has two primary airports. Key West International Airport(EYW)is located within the Key
West city limits, two miles east of the main commercial center. EYW is the primary passenger airport in
the Keys and served more than 1.3 million passengers in 2023. Florida Keys/Marathon International
Airport(MTH)is located within the Marathon city limits directly adjacent to US 1. MTH is a general
aviation airport that currently does not have any scheduled passenger flights but does have charter air
service. Both airports are self-supporting Enterprise Funds,which operate using money generated by rates
and charges levied on airport tenants and users. The Airports Department operates the facilities and
provides comprehensive aviation services.
Bus service is provided by Greyhound to the Key Largo bus stop,the Marathon airport, and the Key West
Bus Station. Key West Transit provides public bus service with five routes in the City of Key West and
one route for the Lower Keys Shuttle,traveling between Key West and Marathon. Miami-Dade Transit
provides the Dade-Monroe Express between Florida City and Marathon.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
3.52 UTILITIES
Electric power for the County is provided by the Florida Keys Electric Cooperative (FKEC) from the
Upper Keys (Miami-Dade County Line)to Marathon at the Seven Mile Bridge and by Keys Energy
Services KEYS) from the Seven Mile Bridge to Key West. The electric transmission lines in the county
are above-ground, and transmission poles are located in the water at bridge crossings between keys.
FKEC is a member-owned not-for-profit electric utility. The cooperative brings power from the mainland
to the Florida Keys to serve approximately 33,000 accounts via a 138,000-volt transmission line. The
transmission line is jointly owned by FKEC and KEYS,with FKEC responsible for maintenance in their
territory. FKEC purchases nearly 100 percent of its power from Florida Power&Light, although
generators in Marathon and two solar arrays also contribute to power supply. FKEC operates 6
substations and maintains over 800-miles of distribution power lines.
Keys Energy Services is a municipal owned public utility headquartered in Key West serving more than
28,000 customers. KEYS purchases all of its power through Florida Municipal Power Agency(FMPA)
and imports the power from the mainland via the 13 8,000 volt transmission line. FMPA owns I I I
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SECTION 3: PLANNING AREA PROFILE
megawatts of generation on Stock Island. The local generation is used to meet peak loads and for
emergency backup in the event of loss of the transmission line. KEYS operates 9 substations and
maintains over 900 miles of distribution power lines (340 miles three phase equivalent).
Water service in the Florida Keys is provided by the Florida Keys Aqueduct Authority(FKAA), an
independent state agency with the primary purpose and function to obtain, supply, and distribute an
adequate water supple to the Florida Keys. FKAA provides potable water across the County along with
reclaimed water and wastewater services in select areas. In total,FKAA delivers approximately 16.5
million gallons of drinking water per day. The Authority manages the infrastructure to supple water,
including a pipeline that originates in Florida City(Miami-Dade County)bringing water from the
Biscayne Aquifer. The main pipeline that connects the upper keys is laid underwater; some distribution
pipelines, however, are connected to roads and bridges and may be vulnerable to washout. FKAA
additionally operates two reverse osmosis emergency water treatment plants to provide an alternate
source when water cannot be supplied through the pipeline. FKAA is required to meet or exceed the latest
edition of the Florida Building Code when building or renovating its facilities; it also complies with the
minimum design standards for flood protection of water and wastewater infrastructure set by the Florida
Department of Environmental Protection.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Monroe County and each of its jurisdictions use a comprehensive land use plan to guide their growth. A
community's comprehensive plan and future land use map help determine development decisions and
indicate where growth can be expected to occur based on land suitability and the community's overall
vision and priorities.
In 1975,the Florida Keys were designated as an Area of Critical State Concern by the Administration
Commission and then by the Florida Legislature in 1979. This designation is intended to protect
environmental and natural resources of regional and statewide importance,historical archaeological
resources, and major public facilities and public investments; these resources include the only coral reef
system in North America, and the third largest in the world, and one of the most ecologically diverse
ecosystems in the United States. Due to this designation, federal and state involvement in the County's
land use planning is extensive.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
MONROE C
Land use in Monroe County is managed by the Monroe County Planning and Environmental Resources
Department. The department has four offices: Comprehensive Planning, Current Planning, Environmental
Resources, and Marine Resources; floodplain management also falls within this department. Across these
offices,the department is responsible for the administration of the County's comprehensive plan and land
development regulations, including processing amendments to the plan(comprehensive planning).
Additionally, the department reviews development proposals for compliance with the plan, including
environmental compliance (current planning). The County's adopted comprehensive plan,most recently
updated in 2010 to plan through the year 2030, guides future growth and community development.
Monroe County's Comprehensive Plan states that"Monroe County shall manage future growth to
enhance the quality of life, ensure the safety of County residents and visitors, and protect valuable natural
resources."It designates the following future land use categories to guide growth within the county:
— Agriculture — Mixed Use/Commercial Fishing
— Airport District — Mainland Native
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— Conservation — Public Buildings/Lands
— Commercial — Public Facilities
— Education — Recreation
— Industrial — Residential Conservation
— Institutional — Residential High
— Military — Residential Low
— Mixed Use/Commercial — Residential Medium
Monroe County's future land use map is available via an online GIS application.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CITY OF KEY OOL ONY BEACH
The City of Key Colony Beach has an adopted comprehensive plan and regulates development with the
official Zoning Map, shown below,which includes residential,resort hotel,neighborhood business,
public buildings,public recreation, and conservation zones.
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CITY OF KEY WES 7
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
The City of Key West adopted its most recent comprehensive plan in 2013. Key West lists
inclusiveness/diversity, ethics, community, environmental stewardship, and fiscal responsibility, as the
core values of its comprehensive plan. It recommends medium and high-density development sparingly
and emphasizes the legacy of historic residential and commercial uses. Key West's future land use
categories are reflected in the map below and include:
III ".III ill ".iii iii ""lii ii iii III III ou III III iii t iii atiii ar''i Strategy 3 a iiir"m u a ilia
IIC:.)'I'g i 38
SECTION 3: PLANNING AREA PROFILE
— Low Density Residential
— Medium Density Residential
— High Density Residential
— Historic Residential
— General Commercial
— Historic Commercial
— Public Service
— Historic Public/Semi-Public
— Conservation
— Military
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Source:2013 City of Key West Comprehensive Plan
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CITY OFL
The City of Layton updated its comprehensive plan in 2016. Through this plan,the city sets out to
"maintain the residential character of Layton,manage the rate of development and population growth to
provide small-town ambiance, improve quality of life for residents..." The comprehensive plan provides
an existing land use map (as of 2007)as well as a future land use map. These maps, shown side-by-side in
Figure 3.10 and Figure 3.10 are almost identical—meaning that the city intends to maintain the current
development pattern. Layton concentrates commercial and institutional development along the U.S. 1
Corridor and reserves the area behind these commercial/institutional spaces for single-family homes. It
divides future land uses into four categories: Single-family,Multi-family, Recreation, and Conservation.
III .III ill .iii iii ..lii ii iii III IIL...ou III III iii t iii atiii aii°m Strategy Jaiir.°m u a. 2,02,6
SECTION 3: PLANNING AREA PROFILE
" ""'I ......... t I Use IMaIIIIIp
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E I TII' O L " L PE',ua LAND USE
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Source:City of Layton Comprehensive Plan,2016
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Source:City of Layton Comprehensive Plan,2016
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SECTION 3: PLANNING AREA PROFILE
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CITY OF MARATHON
The City of Marathon passed its most recent comprehensive plan in 2005. The comprehensive plan seeks
to direct future growth towards "lands which are inherently most suitable for development" and it
promotes "conservation,preservation, and protection of environmentally lands." Through the future land
use map,the city primarily encourages mixed use development along the U.S. 1 corridor and reserves
areas for conservation and recreation. It also favors medium and high-density residential development,
rather than just low residential. Future land use categories include:
— Airport
— Conservation
— Industrial
— Mixed Use Commercial
— Public
— Recreation
— Residential High
— Residential Medium
— Residential Low
The City's future land use map is available via an online GIS application on the City website.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ISLAX110RADA VIL I.AGE OF ISLANDS
Islamorada Village passed its comprehensive plan in January 2001 and made updates to the plan up until
September 2017. As of March 2025, Islamorada is in the process of creating a new comprehensive plan.
Its land regulations intend to reinforce the village's community appearance, enhance the appearance and
function of US 1 Corridor,protect residential areas from incompatible development, encourage separation
of urban and rural land uses, and ensure orderly transition. Future land use categories include:
— Conservation
— Recreation/Open Space
— Public/Semi-Public
— Residential High
— Residential Medium
— Residential Low
— Residential Conservation
— Airport
— Mixed Use
— Industry
— Mariculture
III .III ill .iii iii ..lii ii iii III IIL...ou III III iii t iii ad aii°m Strategy 3 a iiir.m u a i a
SECTION 3: PLANNING AREA PROFILE
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Source:Islamorada,Village of Islands
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
67 RATE OF GROWTH ORDINAN(O"E
Growth trends in Monroe County are regulated through the number of residential permits issued. The
Monroe County Rate of Growth Ordinance(ROGO) controls the number of dwelling units—both
permanent and seasonal—that can be permitted in Monroe County and incorporated municipalities. The
ROGO was initially adopted in 1992 as a response to the inability of the road network to accommodate a
large-scale hurricane evacuation in a timely fashion. During the initial evacuation study, a series of
complex models was developed to determine the number of additional dwelling units that could be
permitted without exceeding a 24 hour evacuation from the Keys. As a result, a tool was developed to
equitably distribute—geographically and over time—the remaining number of permits available.
Based on the supply of vacant buildable lots,the ROGO distributes a pre-determined number of
allocations for new residential permits by ROGO Year—generally from July 13'of one year through July
12'of the next year. To further address concerns of carrying capacity,the County implemented the tier
system. This system designates all land outside of mainland Monroe into three general categories for
purposes of its land acquisition program and smart growth. Both systems recognize the finite limits of the
carrying capacity of both the natural and man-made systems in the Keys. Their goal is to ensure public
safety through the ability to maintain a hurricane evacuation clearance time. Both the ROGO and Tier
III .III ill .iii iii ..lii ii iii III IIL...ou III III iii t iii atiii ar''I Strategy Jaiir'iu ai
SECTION 3: PLANNING AREA PROFILE
System exclude the Ocean Reef Club planned development in Key Largo based on the Ocean Reef Club
Vested Development rights letter. The three tiers are as follows:
- Tier I: Natural Areas
- Tier II: Transitional and Sprawl Reduction Area(on Big Pine Key and No Name Key, only)
- Tier III: Infill Area; includes a special protection area as a subset(Tier III-A)
Under the Rate of Growth Ordinance,the number of permits to be allocated between July 13'2013
through July 13th 2023 was to not exceed 1,970. These allocations were to be divided yearly and across
market rate units, affordable housing units,mobile homes, and institutional residential units. The County
required at least 20 percent of yearly allocations to be affordable units. Annual permits were also divided
between three subareas: Upper Keys, Lower Keys, and Big Pine Key/No Name Key. On February 10,
2020,the county adopted Ordinance No. 006-2020 amending section 13 8-24 of the Monroe County Land
Development Code. Through this adoption,the County extended the ROGO time period through 2026. In
so doing,the number of permits available annually was reduced. Table 3.12 below illustrated the permits
to be made available under this new ordinance amendment.
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Annual Allocations
ROGO Year
Market Rate Affordable Housing
July 13,2013-July 12,2014 126-U: 611 L:57, BPK/NNK:8 71
July 13,2014-July 12,2015 126-U: 61, L:57, BPK/NNK:8 71
July 13,2015-July 12,2016 126-U: 61, L:57, BPK/NNK:8 71
July 13,2016-July 12,2017 126-U: 61, L:57, BPK/NNK:8
July 13,2017-July 12,2018 126-U: 61, L:57, BPK/NNK:8
July 13,2018-July 12,2019 126-U: 617 L:57, BPK/NNK:8
July 13,2019-July 12,2020 126-U: 611 L:57, BPK/NNK:8
July 13,2020-July 12,2021 64-U:31, L:29, BPK/NNK:4 497 total Affordable Housing
July 13,2021-July 12,2022 64-U:31, L:29, BPK/NNK:4 Units (Available Immediately)
July 13,2022-July 12,2023 64-U:31, L:29, BPK/NNK:4
July 13,2023-July 12,2024 64-U:31, L:29, BPK/NNK:4
July 13,2024-July 12,2025 64-U:31, L:29, BPK/NNK:4
July 13,2025-July 12,2026 64-U:31, L:29, BPK/NNK:4
Total 19260 710
Source:Monroe County Ordinance 006-2020
U=Upper Keys;L=Lower Keys;BPK/NNK=Big Pine Key/No Name Key
As residential and non-residential development influence one another, considering non-residential
permitting is also important when maintaining the islands' carrying capacity. The predominant form of
non-residential development in the Keys is commercial,mainly retail trade and services; this includes
tourism related development such as marinas and restaurants. Non-residential development is also
controlled to maintain a balance of land uses between residential and commercial. The Non-residential
Rate of Growth Ordinance (NROGO) limits the square footage of new commercial development to 239
square feet per each new residential permit issued. In unincorporated Monroe County,this means a
maximum of 47,083 square feet of floor area per NROGO year. This is also to be distributed across the
same three subareas as the ROGO permits.
IIM t.III ill .iii iii ..lii ii iii III IIL...ou III III iii t iii I ad aii°m Strategy 3 a iiir.m u a i a 2,0 2,6
SECTION 3: PLANNING AREA PROFILE
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Monroe County is characterized by a unique economy due to its location and geography. The Keys attract
both seasonal residents and short-term visitors with an amenable climate and many recreational
opportunities. The economy is dominated by tourism;the service sector,primarily hospitality,is the
largest segment of the private sector followed by retail trade. As such an important piece of the economy,
the tourism industry supplements the tax base in Monroe County. A major hurricane or other disaster
event that keeps visitors away will lead to reduced revenue associated with the Bed Tax, Sales Tax, and
Infrastructure Tax.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
3.7 7 WAGE,S AND EMPLOYMENT
Per the 2023 ACS 5-Year Estimates,the median household income for Monroe County was $82,430,
which exceeds the state's median household income ($71,711). Household income is higher in each
Monroe County jurisdiction than in the state. Income is highest in Key Colony Beach and Islamorada and
lowest in Layton. Compared to the state, a smaller portion of the population is living below the poverty
line in the County and all jurisdictions,but more of the population lacks health insurance across the
County and in all incorporated jurisdictions except Islamorada. Overall,Monroe County and its
jurisdictions experience higher household incomes and lower unemployment and poverty rates than the
state of Florida.
Table 3.13 shows economic statistics for each jurisdiction compared to the state average and Table 3.14
shows employment statistics for the county compared to the state average.
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Median %of Individuals %Without
Jurisdiction Household Unemployment Rate(%) Below PovertyHealth
Income Level Insurance
City of Key Colony Beach $94,531 0.0% 5.1% 7.6%
City of Key West $78,532 2.0% 11.1% 17.7%
City of Layton $71,875 0.0% 6.7% 14.1%
City of Marathon $80,556 5.4% 11.4% 19.2%
Islamorada Village of Islands $95,212 0.0% 6.0% 12.0%
Monroe County $82,430 3.2% 10.4% 14.9%
Florida $77,711 4.8% 72.6% 11.9%
Source: U.S.Census Bureau,2019-2023 American Community Survey 5-Year Estimates
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Industry Monroe County Florida
Agriculture,forestry,fishing and hunting,and mining 1.6% 0.8%
Construction 9.1% 8.2%
Manufacturing 2.7% 5.2%
Wholesale trade 1.6% 2.4%
Retail trade 9.5% 12.1%
Transportation and warehousing,and utilities 7.4% 6.3%
Information 0.9% 1.6%
Finance and insurance,and real estate and rental and leasing 7.0% 8.0%
III .III ill .iii iii ..lii ii iii III IIL...ou III III iii t iii ad aii°m Strategy 3 a iiir.m u a i a
SECTION 3: PLANNING AREA PROFILE
Industry Monroe County Florida
Professional,scientific,and management,and administrative and
waste management services 11.9% 14.0%
Educational services,and health care and social assistance 14.5% 21.0%
Arts,entertainment,and recreation,and accommodation and food
services 21.7% 11.1%
Other services,except public administration 5.9% 5.1%
Public administration 6.2% 4.3%
Source: U.S.Census Bureau,2019-2023 American Community Survey 5-Year Estimates
The largest industry sector in the County in 2023 was"arts, entertainment, and recreation, and
accommodation and food services," comprising 21.7 percent of employment across the county. This is
followed closely by"educational services, and health care and social assistance," comprising 14.5 percent
of total employment. Compared to the state,the arts, entertainment, accommodations, and food services
industry makes up a much larger percentage of employment in Monroe County.
Table 3.15 summarizes the major employers in Monroe County according to data from the Key West
Chamber of Commerce as of October 2021. Five of the ten largest employers in Monroe County are
public entities.
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Employer Sector Employees
US Armed Services(I ncl.Civilians Supports&Contractors) Public 2,190
Monroe County Schools Public 1701
Ocean Reef Club Private 850
Publix Stores(Key West, Marathon, Key Largo) Private 730
Ocean Properties Private 550
Monroe County Government Public 540
Monroe County Sherriff's Office Public 518
Lower Keys Medical Center, Key West Private 500
City of Key West Public 470
Spottswood Properties Private 360
Casa Marina/Reach Resort Private 356
Hawk's Cay Resort Private 350
Florida Keys Aqueduct Authority Public 283
Fogarty's/Red Fish Blue Fish/Caroline's/Jack Flats/Waterfront Brewery Private 280
Cheeca Lodge Private 268
Historic Tours of America Private 216
Southernmost Beach Resorts Private 201
Source:Key West Chamber of Commerce,October 2021
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
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Requirement§201.6(c)(2):[The plan shall include]A risk assessment that provides the factual basis for
activities proposed in the strategy to reduce losses from identified hazards. Local risk assessments must
provide sufficient information to enable the jurisdiction to identify and prioritize appropriate mitigation
actions to reduce losses from identified hazards.
Requirement §201.6(c)(2)(i): [The risk assessment shall include a] description of the type...of all natural
hazards that can affect the jurisdiction.
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Requirement§201.6(c)(2)(i): [The risk assessment shall include a] description of the...location and extent of
all natural hazards that can affect the jurisdiction. The plan shall include information on previous
occurrences of hazard events and on the probability of future hazard events.
44 CFR Subsection D §201.6(c)(2)(ii): [The risk assessment shall include a] description of the jurisdiction's
vulnerability to the hazards described in paragraph(c)(2)(i)of this section. This description shall include an
overall summary of each hazard and its impact on the community. Plans approved after October 1,2008 must
also address NFIP insured structures that have been repetitively damaged by floods. The plan should describe
vulnerability in terms of:
A) The types and numbers of existing and future buildings, infrastructure, and critical facilities located in the
identified hazard areas;
(B): An estimate of the potential dollar losses to vulnerable structures identified in paragraph (c)(2)(ii)(A) of this
section and a description of the methodology used to prepare the estimate;and
(C): Providing a general description of land uses and development trends within the community so that mitigation
options can be considered in future land use decisions.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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This section describes the Hazard Identification and Risk Assessment process for the development of the
Monroe County Local Mitigation Strategy. It describes how the County met the following requirements
from the 10-step planning process:
— Planning Step 4: Assess the Hazard
— Planning Step 5: Assess the Problem
As defined by FEMA,risk is a combination of hazard,vulnerability, and exposure. "It is the impact that a
hazard would have on people, services, facilities, and structures in a community and refers to the
likelihood of a hazard event resulting in an adverse condition that causes injury or damage."
This hazard risk assessment covers all of Monroe County, including the unincorporated county and all
incorporated jurisdictions participating in this plan.
The risk assessment process identifies and profiles relevant hazards and assesses the exposure of lives,
property, and infrastructure to these hazards. The process allows for a better understanding of the
potential risk to natural and technological hazards in the county and provides a framework for developing
and prioritizing mitigation actions to reduce risk from future hazard events. This risk assessment
followed the methodology described in the FEMA publication Understanding Your Risks Identifying
Hazards and Estimating Losses (FEMA 386-2, 2002),which breaks the assessment down to a four-step
process:
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Data collected through this process has been incorporated into the following sections of this plan:
— Section 4.2: Hazard Identification identifies the natural and human-caused hazards that threaten the
planning area.
— Section 4.3: Risk Assessment Methodology and Assumptions
— Section 4.4: Asset Inventory details the population,buildings, and critical facilities at risk within
the planning area.
— Section 4.5: Hazard Profiles,Analysis, and Vulnerability discusses the threat to the planning area,
describes previous occurrences of hazard events and the likelihood of future occurrences, and
assesses the planning area's exposure to each hazard profiled; considering assets at risk, critical
facilities, and future development trends.
— Section 4.6: Conclusions on Hazard Risk summarizes the results of the Priority Risk Index and
defines each hazard as a Low, Moderate, or High-Risk hazard.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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To identify hazards relevant to the planning area,the LMS Working Group (LMSWG)began with a
review of the list of hazards identified in the 2023 State Hazard Mitigation Plan and the 2021 Monroe
County Local Mitigation Strategy(LMS) as summarized in Table 4.1. The LMSWG used these lists to
identify a full range of hazards for potential inclusion in this plan update and to ensure consistency across
these planning efforts. All hazards listed below were evaluated for inclusion in this plan update.
IIIIIII Illlllh�lllllllIIIIIIIIIIII IIIIIII IIIIIII IIIIIII IIIIIII IIIIIIII Illlllhlllllllll IIIIIII IIIIIIIIII
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Hazard Included in 2023 Included in 2021
State HMP? Monroe County LMS?
Flood Yes Yes
Tropical Cyclones Yes Yes
Wildfire Yes Yes
Severe Storms and Tornadoes Yes Yes
Sea Level Rise Yes(Flood) Yes
Drought Yes Yes
Coastal Erosion Yes Yes
Extreme Heat Yes Yes
Radiological Incident Yes Yes
Cybe r Attack Yes Yes
Winter Weather Yes No
Sinkhole Yes No
Earthquake Yes No
Tsunami Yes No
Hazardous Materials Incident Yes No
Transportation Incident Yes No
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Hazard Included in 2023 Included in 2021
State HMP? Monroe County LMS?
Agricultural Disruption Yes No
Human Health Incident Yes No
Harmful Algal Bloom Yes No
Domestic Security Incident Yes No
Mass Migration Yes No
Civil Disturbance Yes No
Dam Failure Yes No
Space Weather Yes No
The LMSWG evaluated the above list of hazards using existing hazard data,past disaster declarations,
local knowledge, and information from the 2023 State Plan and the 2021 Monroe County Plan to
determine the significance of these hazards to the planning area. Significance was measured in general
terms and focused on key criteria such as frequency and resulting damage,which includes deaths and
injuries, as well as property and economic damage.
One key resource in this effort was the National Oceanic and Atmospheric Administration(NOAA)'s
National Center for Environmental Information(NCEI),which has been tracking various types of severe
weather since 1950. Their Storm Events Database contains an archive by county of destructive storm or
weather data and information which includes local, intense and damaging events. NCEI receives storm
data from the National Weather Service(NWS),which compiles their information from a variety of
sources, including but not limited to: county, state and federal emergency management officials; local law
enforcement officials; SkyWarn spotters;NWS damage surveys; newspaper clipping services; the
insurance industry and the general public, among others. The NCEI database contains 413 records of
severe weather events that occurred in Monroe County in the 25-year period from 2000 through 2024.
Table 4.2 summarizes these events.
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Type #of Events Property Damage Crop Damage Deaths Injuries
Coastal Flood 14 $100,000 $0 0 0
Dense Fog 0 $0 $0 0 0
Drought 12 $0 $0 0 0
Excessive Heat 0 $0 $0 0 0
Extreme Cold/Wind Chill 0 $0 $0 0 0
Flash Flood 0 $0 $0 0 0
Flood 24 $56,000 $0 0 0
Frost/Freeze 0 $0 $0 0 0
Funnel Cloud 9 $0 $0 0 0
Hail 7 $250 $0 0 0
Heavy Rain 12 $0 $0 0 0
High Wind 3 $2,000 $0 1 0
Hurricane(Typhoon) 31 $113,235,000 $0 3 46
Lightning 12 $73,000 $0 0 4
Rip Current 0 $0 $0 0 0
Storm Surge/Tide 34 $2,401,000 $0 1 1
Thunderstorm Wind 51 $146,650 $0 0 0
Tornado 32 $5,336,700 $0 0 0
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Type #of Events Property Damage Crop Damage Deaths Injuries
Tropical Storm 48 $37,208,200 $0 2 3
Waterspout 123 $0 $0 0 0
Wildfire 1 $0 $0 0 0
Total: 413 $115895589800 $0 7 54
Source: National Center for Environmental Information Storm Events Database,March 2025
Note: Losses reflect totals for all impacted areas for each event
The LMSWG also researched past events that resulted in a federal and/or state emergency or disaster
declaration for Monroe County in order to identify significant hazards. Federal and/or state disaster
declarations may be granted when the Governor certifies that the combined local, county and state
resources are insufficient, and that the situation is beyond their recovery capabilities. When the local
government's capacity has been surpassed, a state disaster declaration may be issued, allowing for the
provision of state assistance. If the disaster is so severe that both the local and state government capacities
are exceeded, a federal emergency or disaster declaration may be issued allowing for the provision of
federal assistance.
— Emergency declarations: When federal assistance is needed,the President of the United States can
declare an emergency for any occasion or disaster. Emergency declarations aide State and local
efforts in providing emergency services that help protect human lives.
— Major disaster declarations: When a local government's capacity has been surpassed, a state disaster
declaration may be issued, allowing for the provision of state assistance. Federal and/or state disaster
declarations may be granted when the Governor certifies that the combined local, county, and state
resources are insufficient, and the situation is beyond their recovery capabilities.
Records of designated counties for FEMA major disaster declarations start in 1964. Since then, Florida
has been designated in 88 major disaster declarations, and Monroe County,has been designated in 27
major disaster declarations, as detailed in Table 4.3, and 18 emergency declarations, as detailed in Table
4.4.
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Disaster# Dec.Date Incident Type Event Title
4834 10/11/2024 Hurricane Hurricane Milton
4828 9/28/2024 Hurricane Hurricane Helene
4806 8/10/2024 Tropical Storm Hurricane Debby
4673 9/29/2022 Hurricane Hurricane Ian
4486 3/25/2020 Biological COVID-19 Pandemic
4337 9/10/2017 Hurricane Hurricane Irma
4084 10/18/2012 Hurricane Hurricane Isaac
1785 8/24/2008 Tropical Storm Tropical Storm Fay
1609 10/24/2005 Hurricane Hurricane Wilma
1602 8/28/2005 Hurricane Hurricane Katrina
1595 7/10/2005 Hurricane Hurricane Dennis
1551 9/16/2004 Hurricane Hurricane Ivan
1545 9/4/2004 Hurricane Hurricane Frances
1539 8/13/2004 Severe Storm(s) Hurricane Charley and Tropical Storm Bonnie
1359 2/5/2001 Freeze Severe freeze
1345 10/4/2000 Severe Storm(s) Heavy rains and flooding
1306 10/20/1999 Hurricane Hurricane Irene
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Disaster# Dec.Date Incident Type Event Title
1259 11/6/1998 Severe Storm(s) Tropical Storm Mitch
1249 9/28/1998 Hurricane Hurricane Georges
1223 6/18/1998 Fi re Extreme Fire Hazard
1204 2/1211998 Severe Storm(s) Severe Storms, high Winds,Tornadoes,and Flooding
982 3/13/1993 Severe Storm(s) Tornadoes,flooding, high winds,tides,freezing
955 8/24/1992 Hurricane H u rrica ne And rew
851 1/15/1990 Freeze Severe freeze
526 1/31/1977 Severe Storm(s) Severe winter weather
337 6/23/1972 Coastal Storm Tropical Storm Agnes
209 9/1411965 Hurricane Hurricane Betsy
Source: FEMA Disaster Declarations Summary,March 2025
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Disaster# Dec.Date Incident Type Event Title/Description
3622 10/7/2024 Hurricane Hurricane Milton
3615 9/24/2024 Tropical Storm Tropical Storm Helene
3605 8/3/2024 Tropical Storm Tropical Storm Debby
3584 9/24/2022 Hurricane Tropical Storm Ian
3561 7/4/2021 Severe Storm Tropical Storm Elsa
3533 08/01/2020 Hurricane Tropical Storm Isaias
3432 3/13/2020 Biological COVID-19 Pandemic
3419 8/31/2019 Hurricane Hurricane Dorian
3385 9/5/2017 Hurricane Hurricane Irma
3377 10/6/2016 Hurricane Hurricane Matthew
3293 9/7/2008 Hurricane Hurricane Ike
3288 8/21/2008 Tropical Storm Tropical Storm Fay
3259 9/20/2005 Tropical Storm Tropical Storm Rita
3220 9/5/2005 Hurricane Hurricane Katrina Evacuation
3150 10/15/1999 Hurricane Hurricane Irene
3139 4/27/1999 Fi re Fire Hazard
3131 09/24/1998 Hurricane Hurricane Georges
3079 5/6/1980 Human Caused Undocumented Aliens
Source:FEMA Disaster Declarations Summary,March 2025
Monroe County also declared Local States of Emergency for Tropical Storm Laura(August 22,2020)and Tropical Storm
Eta(November 6,2020).
Using the above information and additional discussion,the LMSWG evaluated each hazard's significance
to the planning area in order to decide which hazards to include in this plan update. Some hazard titles
have been updated either to better encompass the full scope of a hazard or to assess closely related
hazards together. Table 4.5 summaries the determination made for each hazard.
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Included in
Hazard this LMS Explanation for Decision
update?
Natural Hazards
The 2021 Monroe County plan and 2023 State plan addressed this
Flood Yes hazard.As a coastal county,over 99 percent of the county is within
the 100-year-flood plain,and the county is also vulnerable to
localized and stormwater flooding.
Both the 2021 Monroe County plan and the 2023 State plan
Tropical Cyclones Yes addressed Tropical Cyclones.Since 1965,the county has received 16
Major Disaster declarations from FEMA for Hurricanes/Tropical
storms.
The 2021 Monroe County plan profiled these hazards separately.
Severe Storms and Yes From 2000 to 2024,the County experienced 225 thunderstorm and
Tornadoes tornado events(including waterspouts)causing over$5.5m in
damages.
The 2021 Monroe County plan as well as the 2023 State plan
Wildfire Yes addressed this hazard.Although NCEI reports only 1 wildfire in
Monroe County,the State plan reports parts of mainland Monroe
have moderate to high burn probability.
The 2021 Monroe County LMS and the 2023 State Plan addressed
Coastal Erosion Yes this hazard.The 2024 State Critically Eroded Beaches Report
identified 13 critically eroded beaches in the middle and lower keys
tota I ly 15.02 m i I es.
Drought as included in both the 2021 Monroe County LMS and the
Drought Yes 2023 State Plan. NCEI reports 12 instances of drought in the county;
the LMSWG decided to continue to evaluate drought in this plan
update.
Sea Level Rise was addressed in the 2021 Monroe County LMS as
Sea Level Rise Yes well as the 2023 State plan. NOAA's Sea Level Rise Viewer shows
the County will experience impacts from even just one foot of sea
level rise.
The 2021 Monroe County LMS and the 2023 State Plan addressed
Extreme Heat Yes this hazard.Although NCEI reports zero instances of extreme heat
in the county,the LMSWG decided to include it in this plan update.
This hazard was not included in the 2021 Monroe County LMS.
Sinkhole No According the 2023 State H M P, Monroe County has a low
susceptibility to sinkholes,therefore the LMSWG chose to not
include sinkholes in this plan update.
Winter storms and freezes were not included in the 2021 LMS.
Winter Weather No Although there have been some instances of low wind chill in the
Keys,the LMSWG noted that the Keys are generally not at risk to
winter weather.
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Included in
Hazard this LMS Explanation for Decision
update?
Earthquake was not included as a hazard in the 2021 Monroe
County LMS. Earthquakes are very rare in the State,the peak
ground acceleration (PGA)with a 10% probability of exceedance in
Earthquake No 50 years is 0%gravity-the lowest potential for seismic ground
shaking.As FEMA recommends earthquakes only be evaluated in
areas with PGA of 3%or more,this hazard was excluded from the
plan update.
While there is some tsunami risk for low-elevation (less than 15 feet
Tsunami No above mean high tide),they are extremely rare in the Florida Keys.
The state HMP concludes the probability of future tsunamis is low.
Technological Hazards
The 2021 Monroe County LMS and the 2023 State Plan addressed
Radiological Yes this hazard. Due to the County's proximity to the Turkey Point
Incident Nuclear Generating Station,the LMSWG decided to include it in
this update.
The 2021 Monroe County LMS and the 2023 State Plan addressed
Cyber Attacks Yes this hazard.The LMSWG determined that because of recent events,
it should be included in this update.
Hazardous No This hazard was not included in the previous Monroe County LMS
Materials Incident and not suggested by the LMSWG for inclusion in this update.
This hazard was not included in the previous Monroe County LMS.
Transportation No The LMSWG discussed this hazard and the consequences of
Incident transportation incidents on the Keys. However,this hazard was
ultimately not included in this update.
Agricultural No This hazard was not included in the previous Monroe County LMS
Disruption and not suggested by the LMSWG for inclusion in this update.
This hazard was not included in the previous Monroe County LMS
Human Health No and not suggested by the LMSWG for inclusion in this update.
Incident Health hazards are addressed by public health departments and
emergency operations planning.
Harmful Algal No This hazard was not included in the previous Monroe County LMS
Bloom and not suggested by the LMSWG for inclusion in this update.
Domestic Security This hazard was not included in the previous Monroe County LMS
Incident
No and not suggested by the LMSWG for inclusion in this update.
These threats are addressed by emergency operations planning.
Mass Migration No This hazard was not included in the previous Monroe County LMS
and not suggested by the LMSWG for inclusion in this update.
This hazard was not included in the previous Monroe County LMS
Civil Disturbance No and not suggested by the LMSWG for inclusion in this update.
These threats are addressed by emergency operations planning.
Dam Failure No The 2023 State Plan reported there were no high or significant
hazard dams in Monroe County.
Space Weather No This hazard was not included in the previous Monroe County LMS
and not suggested by the LMSWG for inclusion in this update.
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The Disaster Mitigation Act of 2000 requires that the LMSWG evaluate the risks associated with each of
the hazards identified in the planning process. Each hazard was evaluated to determine its probability of
future occurrence and potential impact. A vulnerability assessment was conducted for each hazard using
either quantitative or qualitative methods depending on the available data,to determine its potential to
cause significant human and/or monetary losses. A consequence analysis was also completed for each
hazard. Each hazard is profiled in the following format:
This section provides a description of the hazard, including discussion of its speed of onset and duration,
as well as any secondary effects followed by details specific to the Monroe County planning area.
This section includes information on the hazard's physical extent,with mapped boundaries where
applicable.
This section includes information on the hazard extent in terms of magnitude and describes how the
severity of the hazard can be measured. Where available, the most severe event on record is used as a
frame of reference.
This section contains information on historical events, including the location and consequences of known
past events on record within or near the Monroe County planning area.
C
This section gauges the likelihood of future occurrences based on past events and existing data. The
frequency is determined by dividing the number of events observed by the number of years on record and
multiplying by 100. This provides the percent chance of the event happening in any given year according
to historical occurrence (e.g. 10 winter storm events over a 30-year period equates to a 33 percent chance
of experiencing a severe winter storm in any given year).
Where applicable,this section discusses how climate change may or may not influence the risk posed by
the hazard on the planning area in the future.
This section quantifies,to the extent feasible using best available data, assets at risk to natural hazards and
potential loss estimates. People,properties and critical facilities, and environmental assets that are
vulnerable to the hazard are identified. Future development is also discussed in this section, including
how exposure to the hazard may change in the future or how development may affect hazard risk.
The vulnerability assessments followed the methodology described in the FEMA publication
Understanding Your Risks Identifying Hazards and Estimating Losses (August 2001). The
vulnerability assessment first describes the total vulnerability and values at risk and then discusses
vulnerability by hazard. Data used to support this assessment included the following:
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— GIS datasets, including building footprints,topography, aerial photography, and transportation layers;
— Hazard layer GIS datasets from state and federal agencies;
— Written descriptions of inventory and risks provided by the 2023 Florida Enhanced State Hazard
Mitigation Plan;
— Written descriptions of inventory and risks provided by the 2020 Monroe County Local Mitigation
Strategy and other relevant documents including the 2019 Critically Eroded Beaches Report and the
Regional Climate Action Plan;
— Exposure and vulnerability estimates derived using local parcel and building data; and
— Crop insurance claims by cause from USDA's Risk Management Agency.
Two distinct risk assessment methodologies were used in the formation of the vulnerability assessment.
The first consists of a quantitative analysis that relies upon best available data and technology,while the
second approach consists of a qualitative analysis that relies on local knowledge and rational decision
making. The quantitative analysis involved the use of FEMA's Hazus-MH, a nationally applicable
standardized set of models for estimating potential losses from earthquakes, floods, and hurricanes. Hazus
uses a statistical approach and mathematical modeling of risk to predict a hazard's frequency of
occurrence and estimated impacts based on recorded or historic damage information. The Hazus risk
assessment methodology is parametric, in that distinct hazard and inventory parameters such as wind
speed and building type were modeled using the Hazus software to determine the impact on the built
environment. Monroe County's GIS-based risk assessment was completed using data collected from
local, regional and national sources that included Monroe County, Florida DEM, and FEMA.
Vulnerability can be quantified in those instances where there is a known,identified hazard area, such as
a mapped floodplain. In these instances,the numbers and types of buildings subject to the identified
hazard can be counted and their values tabulated. Other information can be collected regarding the
hazard area, such as the location of critical facilities, historic structures, and valued natural resources
(e.g., an identified wetland or endangered species habitat). Together, this information conveys the
vulnerability of that area to that hazard.
Related hazards or hazards with cascading impacts are noted in this section.
Changes in development that may affect exposure,vulnerability, or the hazard occurrence are described.
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III
Specific problems that can be addressed through mitigation are summarized in this section.
The conclusions drawn from the hazard profiling and vulnerability assessment process can be used to
prioritize all potential hazards to the Monroe County planning area. The Priority Risk Index(PRI)was
applied for this purpose because it provides a standardized numerical value so that hazards can be
compared against one another(the higher the PRI value, the greater the hazard risk). PRI values are
obtained by assigning varying degrees of risk to five categories for each hazard(probability,impact,
spatial extent, warning time, and duration). Each degree of risk was assigned a value (1 to 4) and a
weighting factor as summarized in Table 4.6.
PRI ratings by category for the planning area as a whole are provided throughout each hazard profile.
Ratings specific to each jurisdiction are provided at the end of each hazard profile. The results of the risk
assessment and overall PRI scoring are provided in Section 4.6 Conclusions on Hazard Risk.
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RISK ASSESSMENT LEVEL DEGREE OF RISK CRITERIA INDEX WEIGHT
CATEGORY
PROBABILITY UNLIKELY LESS THAN 1%ANNUAL PROBABILITY 1
What is the
likelihood of a POSSIBLE BETWEEN 1&10%ANNUAL PROBABILITY 2
30%
hazard event LIKELY BETWEEN 10&100%ANNUAL PROBABILITY 3
occurring in a given
ear?
HIGHLY LIKELY 100%ANNUAL PROBABILTY 4
VERY FEW INJURIES,IF ANY.ONLY MINOR
MINOR PROPERTY DAMAGE&MINIMAL DISRUPTION ON 1
QUALITY OF LIFE.TEMPORARY SHUTDOWN OF
IMPACT CRITICAL FACILITIES.
In terms of injuries, MINOR INJURIES ONLY.MORE THAN 10%OF
damage,or death, LIMITED PROPERTY IN AFFECTED AREA DAMAGED OR 2
would you DESTROYED.COMPLETE SHUTDOWN OF CRITICAL
anticipate impacts FACI LITI ES FOR>1 DAY
to be minor,limited, MULTIPLE DEATHS/INJURIES POSSIBLE. 30%
critical,or MORE THAN 25%OF PROPERTY IN AFFECTED
catastrophic when a CRITICAL AREA DAMAGED OR DESTROYED.COMPLETE 3
significant hazard SHUTDOWN OF CRITICAL FACILITIES FOR>1
event occurs? WEEK.
HIGH NUMBER OF DEATHS/INJURIES POSSIBLE.
MORE THAN 50%OF PROPERTY IN AFFECTED 4
CATASTROPHIC
AREA DAMAGED OR DESTROYED.COMPLETE
SHUTDOWN OF CRITICAL FACILITIES>30 DAYS.
SPATIAL EXTENT NEGLIGIBLE LESS THAN 1%OF AREA AFFECTED 1
How large of an area
could be impacted SMALL BETWEEN 1&10%OF AREA AFFECTED 2
by a hazard event? 20%
Are impacts MODERATE BETWEEN 10&50%OF AREA AFFECTED 3
localized or
regional? LARGE BETWEEN 50&100%OF AREA AFFECTED 4
WARNING TIME
MORE THAN 24 SELF DEFINED 1
HRS
Is there usually some lead time 12 TO 24 HRS SELF DEFINED 2
associated with the 10%
hazard event? Have 6 TO12 HRS SELF DEFINED 3
warning measures LESS THAN 6
been implemented? HRS SELF DEFINED 4
LESS THAN 6 SELF DEFINED 1
wQS
DURATION LESS THAN 24 SELF DEFINED 2
How long does the HRS 10%
hazard event LESS THAN 1 SELF DEFINED 3
usually last? WEEK
MORE THAN 1 SELF DEFINED 4
WEEK
The sum of all five risk assessment categories equals the final PRI value, demonstrated in the equation
below(the highest possible PRI value is 4.0).
PRI=[(PROBABILITY X.30)+(IMPACT x.30)+(SPATIAL EXTENT x.20)+(WARNING TIME x.10)+
(DURATION x.10)]
Marvrcl)e County,
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The purpose of the PRI is to categorize and prioritize all potential hazards for the Monroe County
planning area as high,moderate, or low risk. The summary hazard classifications generated using the PRI
allows for the prioritization of those high and moderate hazard risks for mitigation planning purposes.
Mitigation actions are not necessarily developed for hazards identified as low risk through this process.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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An inventory of assets within Monroe County was compiled to identify those structures potentially at risk
to the identified hazards and assess the level of vulnerability. Assets include elements such as buildings,
property,business/industry goods, and civil infrastructure. Building footprint, foundation type, and
building value data were provided by Monroe County. By identifying the type and number of assets that
exist and where they are in relation to known hazard areas,the relative risk and vulnerability for such
assets can be assessed.
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114.4.7 BUILDING EXPOSURE
The properties identified to be at risk include all improved properties in Monroe County and its
incorporated jurisdictions according to parcel and building footprint data provided by Monroe County.
The information is provided in Table 4.7.
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Occupancy Estimated Structure Value Estimated Content Total Value
Parcel Count Value
Islamorada 69136 $299889853,615 $1,747,5559234 $4,736,4089849
Commercial 671 $393,616,980 $393,616,980 $787,233,960
Education 7 $5,927,080 $5,927,080 $11,854,160
Government 51 $77,688,696 $77,688,696 $155,377,391
Industrial 30 $9,444,577 $14,166,865 $23,611,441
Religious 19 $10,134,944 $10,134,944 $20,269,888
Residential 5,358 $2,492,041,339 $1,246,020,669 $3,738,062,008
Key Colony Beach 743 $384,669,274 $2009480,877 $585350351
Commercial 10 $13,746,479 $13,746,479 $27,492,958
Government 8 $2,546,001 $2,546,001 $5,092,002
Residential 725 $368,376,794 $184,188,397 $552,565,191
Key West 7,233 $39559,316,371 $2,084,710,853 $5,6449027,224
Commercial 2,629 $2,114,482,380 $1,962,942,785 $4,077,425,165
Education 16 $17,403,897 $17,403,897 $34,807,794
Government 905 $454,725,420 $454,725,420 $909,450,841
Industrial 87 $28,970,253 $43,455,379 $72,425,632
Religious 64 $37,537,885 $37,537,885 $75,075,770
Residential 97033 $4,472,2937153 $2,236,146,577 $6,708,439,730
Layton 168 $45,574,751 $28,335,151 $73,909,902
Commercial 13 $9,091,528 $9,091,528 $18,183,056
Government 10 $1,589,642 $1,589,642 $3,179,284
Religious 2 $414,380 $414,380 $828,760
Residential 143 $34,479,201 $17,239,600 $51,718,801
Marathon 6,190 $2,421,193,487 $1,524,040,488 $3,945,233,975
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Occupancy Estimated Structure Value Estimated Content Total Value
Parcel Count Value
Commercial 758 $434,714,236 $434,714,236 $869,428,472
Education 12 $2,961,497 $2,961,497 $5,922,994
Government 124 $129,680,070 $129,680,070 $259,360,140
Industrial 118 $24,615,386 $36,923,080 $61,538,466
Religious 25 $10,300,913 $10,300,913 $20,601,826
Residential 5,153 $1,818,921,384 $909,460,692 $2,728,382,075
Unincorporated 26,353 $12,0299183,132 $6,624,472,888 $181,653,656,020
Monroe County
Agriculture 1 $267,735 $267,735 $535,470
Commercial 1,434 $809,369,304 $809,369,304 $1,618,738,608
Education 31 $22,737,542 $22,737,542 $45,475,084
Government 493 $158,704,315 $158,704,315 $317,408,630
Industrial 243 $100,510,211 $150,765,316 $251,275,526
Religious 43 $27,663,327 $27,663,327 $55,326,654
Residential 24,108 $10,909,930,699 $5,454,965,349 $16,364,896,048
Countywide Totals 529324 $249994,887,246 $14,877,096,580 $39,871,983,827
Agriculture 1 $267,735 $267,735 $535,470
Commercial 4,831 $3,471,941,718 $3,471,941,718 $6,943,883,436
Education 66 $49,030,016 $49,030,016 $98,060,032
Government 1,591 $824,934,144 $824,9347144 $1,649,868,288
Industrial 478 $163,540,426 $245,310,639 $408,851,065
Religious 153 $86,051,449 $86,051,449 $172,102,899
Residential 45,204 $20,399,121,758 $10,199,560,879 $30,598,682,637
Source:Monroe County parcel data,2024
Note:In this exposure table,utilities are included in the Government category.However,parcels without a building
cost were excluded-therefore,parcels with small utilities may not be included in the above count).
Note:For the City of Layton,two marine laboratory facilities are listed under the Government category.
Note: Content value estimations are generally based on the FEMA Hazus methodology of estimating
value as a percent of improved structure values by property type. The residential property type assumes a
content replacement value equal to 50%of the building value. Agricultural and commercial property
types assume a content replacement value equal to 100% of the building value. The industrial property
type assumes a content replacement value equal to 150% of the building value.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
m411 2 CRITICAL
Of significant concern with respect to any disaster event is the location of critical facilities and
infrastructure in the planning area. Critical facilities are often defined as those essential services and
lifelines that, if damaged during an emergency event,would result in severe consequences to public
health, safety, and welfare. Critical facility information is regularly updated by the County. Critical
facilities and infrastructure in Monroe County are listed by type in Table 4.8 and organized by FEMA
lifeline.A detailed list of critical facilities is provided in each jurisdictional annex. These facilities were
identified and verified by the LMSWG.
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Unincorporated Monroe County 28 17 14 2 10 35 2 190 298
City of Key Colony Beach - - - - - 2 - 1 3
City of Key West - 7 22 1 5 20 2 6 63
City of Layton 1 - - - - 1 - 3 5
City of Marathon - 3 6 - 6 22 1 8 46
Village of Islamorada - 2 8 - 3 12 - 7 32
Countywide Total 29 29 50 3 24 92 5 215 447
Source:Monroe County
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Hazard ProbabilityImpact Spatial WarningTime Duration PRE
P Extent Score
Coastal Erosion Likely Limited Moderate Less than 24 hrs Less than 1 week 2.5
Coastal erosion is a process whereby large storms, flooding, strong wave action, sea level rise, and human
activities, such as inappropriate land use, alterations, and shore protection structures,wear away the
beaches and bluffs along the coast. Erosion undermines and often destroys homes,businesses, and public
infrastructure and can have long-term economic and social consequences. According to NOAA, coastal
erosion is responsible for approximately$500 million per year in coastal property loss in the United
States, including damage to structures and loss of land. To mitigate coastal erosion, the federal
government subsidizes beach nourishment projects and other shoreline erosion control measures. Since
2018,the federal government has spent more than$770 million for emergency beach nourishment
projects in Florida, Georgia, and the Carolinas.
Coastal erosion has both natural causes and causes related to human activities. Gradual coastal erosion
and accretion results naturally from the impacts of tidal longshore currents. Severe coastal erosion can
occur over a short period when the state is impacted by hurricanes,tropical storms and other weather
systems. Sand is continually removed by longshore currents in some areas,but it is also continually
replaced by sand carried in by the same type of currents. Structures such as piers or sea walls,j etties, and
navigational inlets may interrupt the movement of sand. Sand can become "trapped" in one place by
these types of structures. The currents will, of course, continue to flow,though depleted of sand trapped
elsewhere. With significant amounts of sand trapped in the system,the continuing motion of currents
(now deficient in sand)results in erosion. In this way,human construction activities that result in the
unnatural trapping of sand have the potential to result in significant coastal erosion.
Erosion rates and potential impacts are highly localized. Severe storms can remove wide beaches, along
with substantial dunes, in a single event. In undeveloped areas,these high recession rates are not likely to
cause significant concern,but in some heavily populated locations, one or two feet of erosion may be
considered catastrophic (NOAA, 2014).
Estuaries are partially enclosed, coastal water bodies where freshwater meats saltwater from the ocean.
They are influenced by tides but still protected from the full force of ocean waves. Estuaries are often
referred to as bays or sounds. Estuarine coastlines can experience erosion through short-term processes,
such as tides, storms,wind, and boat wakes, as well as long-term processes, such as sea level rise. Many
variables determine the rate of estuarine erosion including shoreline type, geographic location and size of
the associated estuary, the type and abundance of vegetation, and the frequency and intensity of storms.
Warning Time: 1 —More than 24 hours
Duration: 3—Less than I week
Erosion can occur along any shoreline in the county. In Monroe County, erosion is typically caused by
coastal tides, ocean currents, and especially storm events such as hurricanes and tropical storms. Erosion
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rates are dependent on many characteristics, including soil type. The Lower Keys,having more calcium
carbonate beaches, are more susceptible to erosion than the Upper and Middle Keys. In fact,the Upper
Keys do not have naturally occurring beaches are thus less susceptible to erosion. The Florida Department
of Environmental Protection(DEP)regularly monitors Florida's coastline and determines geographic
areas of the state that are at high risk to erosion. DEP defines a critical erosion area as:
"a segment of shoreline where natural processes or human activity have caused or contributed to erosion
and recession of beach or dune system to such a degree that upland development, recreational interest,
wildlife habitat, or important cultural resources are threatened or lost. Critical erosion areas may also
include peripheral segments or gaps between identified critical erosion areas which, although they may
be stable or slightly erosional now, their inclusion is necessary for continuity of management of the
coastal system or for the design integrity of adjacent beach management projects."
Per DEP's Strategic Beach Management Plan,there are 36.3 miles of beaches in the Florida Keys Region,
from just south of Key Biscayne(in Miami-Dade County)to the Dry Tortugas (in Monroe County). Of
these beaches, 15.02 miles are critically eroded, all in the Monroe County portion of the region. Table 4.9
below lists the locations of these critically eroded beaches as reported in the 2024 Critically Eroded
Beaches report. These shorelines are also mapped in Figure 4.1.
Mainland beaches of Key McLaughlin and Cable Sable fronting the Gulf of Mexico are not included in
the list below due to insufficient data,however both beaches did sustain severe erosion during Hurricane
Wilma in 2005. The Distal Sand keys,west of Key West,were also left out of the below assessment due
to insufficient evidence. The Fills, in Islamorada between mile marker 77 and 79,have experienced
significant erosion and received funding in the past to address these issues. Additionally, erosion has
impacted Key's Energy infrastructure. Erosion around utility and transmission poles has led to the
removal and relocation of such infrastructure.
It should be noted that many of the designated critically eroded beaches have undergone some level of
restoration. The shorelines where these beach restoration projects have taken place have improved
compared to their pre-project condition,however,these shorelines retain their critical erosion designation
in order to retain their state of Florida funding eligibility for long term management and beach project
maintenance and monitoring. More details on the methods used to determine the location of critically
eroded beaches and the impacts of such erosion on individual locations may be found in Florida DEP's
Critically Eroded Beaches Report.
Spatial Extent: 3—Moderate
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Erosion Miles of Critically
Eroding Shoreline Region Condition Eroded Beach
Sea Oats Beach Middle Keys Critical 1.4
Long Key State Park Middle Keys Critical 2.1
Curry Hammock SP, Little Crawl Key Middle Keys Critical 0.3
Coco Plum Beach Middle Keys Critical 1.5
Key Colony Beach Southshore Middle Keys Critical 0.9
Sombrero Beach,Vaca Key Middle Keys Critical 0.5
Little Duck Key Lower Keys Critical 0.2
Bahia Honda State Park Lower Keys Critical 2.2
Long Beach, Big Pine Key Lower Keys Critical 1.1
Boca Chica Key Lower Keys Critical 0.9
Key West Lower Keys Critical 3.6
Fort Zachary Taylor SP Lower Keys Critical 0.3
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Erosion Miles of Critically
Eroding Shoreline Region Condition Eroded Beach
Simonton Beach Lower Keys Critical 0.02
Total 1 S.02
Source:Florida DEP Critically Eroded Beaches Report,2024
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wry Ir dbl e u w''bl,a @: � �o � `
03,w m'A w ui uli�.wl w w w w,w,w ��� Erosion Cl sf l'ons
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Source:Florida DEP Critically Eroded Beaches Report,2024
The magnitude of erosion can be measured as a rate of change from a measured previous condition.
Erosion rates can vary significantly across the county due to several factors including fetch, shoreline
orientation, and soil composition. To account for these variations, long-term erosion can also be measured
by land cover changes and increases in open water. While a small fraction of the shoreline may exhibit
accretion over a short period of time, cumulative impacts can still indicate an overall loss of estuarine
coastline and marsh habitat. Table 4.10 provides from the NOAA Coastal Change Analysis Program(C-
LAP) Land Cover Atlas showing land cover changes in the County from 1996 to 2021.
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Land Cover Type Monroe Net Change Monroe Percent Change
Developed, High Intensity 1.15 sq. mi 6.79%
Developed, Low Intensity 0.67 sq. mi 4.76%
Developed,Open Space 0.00 sq. mi 0.05%
Grassland/Herbaceous -0.10 sq. mi -5.87%
Agriculture -0.01 sq. mi -100.00%
Forested -0.04 sq. mi -1.57%
Scrub/Shrub -0.70 sq. mi -47.83%
Woody Wetland -2.74 sq. mi -0.46%
Emergent Wetland 3.67 sq. mi 0.95%
Bare Land -1.02 sq. mi -44.22%
Open Water -0.88 sq. mi -0.03%
Source:https://coast.noaa.gov/digitalcoast/data/ccapregional.htmi
The C-CAP data indicates a net decrease in open water,however the percentage decrease is less than one-
half of one percent. The County saw a large, over 47 percent, decrease in scrub land, and over 44 percent
decrease in bare land. Only emergent wetlands and all development types were the only land cover areas
to see an increase during this time period. Increases in developed land likely result in increased
impervious surfaces,which may increase stormwater runoff, alter drainage patterns, and further
exacerbate erosion and flood issues.
In terms of the magnitude of impacts, erosion may cause property damage when severe but is unlikely to
cause injury or death. In the 2020 LMS, it was noted that much of the reported property damage caused
by erosion was to public facilities and park infrastructure. The following table summarizes potential
expected impacts by critical erosion area as reported by DEP.
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Eroding Shoreline Potential Impacts
Sea Oats Beach, Lower Matecumbe Recreational interests, private development&U.S. Highway 1
Key along Sea Oats Beach
Long Key Recreational interests in Long Key State Park&private
development
Curry Hammock, Little Crawl Key Recreational interests at Curry Hammock State Park
Coco Plum Beach
Private development,wildlife habitats&recreational interests
at Monroe County park
Key Colony Beach Private development
Sunset Beach Recreational interests
Sombrero Beach,Vaca Key Monroe county public park
Little Duck Key Monroe county public park
Bahia Honda Key Recreational interests, park road &park development
Long Beach, Big Pine Key --
Boca Chica Key Recreational interests&park road
Key West Recreational interests-complete elimination of recreational
beach
Simonton Beach Recreational interests as city park
Fort Zachary Taylor Recreational interests at state park
Source:Florida DEP Critically Eroded Beaches Report,2024
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Impact: 2—Limited
As Figure 4.1 shows, shoreline erosion is occurring along ocean coastlines throughout Monroe County.
Erosion is typically an ongoing process;however, it can be intensified and accelerated during storm
events,particularly hurricane storm tides. Per an examination of event narratives in NCEI records for
hurricanes,tropical storms, storm surges, and coastal floods,the following instances of major erosion are
noted in Monroe County:
August 17,2008 (Tropical Storm)—Tropical Storm Fay crossed through the Lower Florida Keys of
Monroe County during the evening of August 18. Damage and preparedness costs to government
facilities and infrastructure totaled 2.8 million dollars,with about one million dollars due to coastal
flooding damage to roads, and 200,000 dollars due to erosion.
September 9,2008 (Tropical Storm)—Hurricane Ike passed well southwest of the Florida Keys and into
the Gulf of Mexico. However, Ike's large wind field produced tropical storm force winds during
September 9-10, 2008. Total damage to government property in Monroe County was estimated at$13.5
million dollars. Approximately $1.2 million damage in debris removal and erosion occurred county-wide
due to storm surge flooding,with$2.6 million estimated from combined effects from wind and wind-
blown rain. Erosion occurred to the causeways surrounding the Card Sound Bridge.
November 7,2020 (Tropical Storm)—Tropical Storm Eta passed northwest through the middle Florida
Keys on November 8 through 9, 2020. Primary impacts from wind occurred as result of a primary rain
band which drifted very slowly north through the Upper Florida Keys. Peak wind gusts were mostly in
the 50 to 60 mph range, downing trees and large tree limbs,utility lines, and a billboard. One residence
was destroyed by a fallen tree resulting in 1 minor injury. Two other residential structures were
significantly damaged, with three inaccessible due to blocked streets. About 20 separate power outages
affected about 1,000 customers,mostly in Key Largo. Storm Surge flooding was generally in the 1.5 to
2.5 foot range,producing significant street flooding in oceanside Key Largo neighborhoods. The
northbound right-of-way was damaged including major erosion, loss of riprap, and about 3,000 feet of
fencing along northbound U.S. Highway 1 along the west end of Barnes Sound and Manatee Bay. Minor
over wash occurred in the middle Florida Keys at Key Colony Beach, along with yard and dock flooding
along the Florida Bay side of Marathon. Widespread rainfall of 3.5 to over 8 inches was measured
throughout the Keys,with the highest totals in Key Largo. Damages were estimated near$500K due to
mostly from homes damaged by falling trees and tree limbs, as well as utility damage. Storm Surge
damage near$1 OOK due to wave action on top of a minor storm surge to the U.S Highway 1 right-of-way.
July 5,2021 (Tropical Storm)—Tropical Storm Elsa moved north-northwest from western Cuba,through
the western Straits of Florida, and passed between the Marquesas Keys and Dry Tortugas into the
southeast Gulf of Mexico. Numerous rain bands moved northwest and north through the Lower and
Middle Florida Keys,with strong tropical-storm-force wind gusts measured near Key West from the
evening of July 5th through the afternoon of July 6th. Maximum winds over the Florida Keys of Monroe
County were recorded at 52 mph with gusts to 70 mph at Key West. Wind impacts were confined to
damage to trees and utility lines,mostly in Key West proper. No storm surge was recorded in the Florida
Keys, however the onshore southerly winds raised water levels just below 1.0 foot above normal at Key
West closer to low astronomical tide. Moderate oceanside beach erosion occurred at Key West along
with over wash from heavy wave action. Storm total rainfall up to near 7.5 inches resulted in brief but
significant street flooding in Key West midday on July 6th.
The Strategic Beach Management Plan report notes the following storms caused erosion of County
beaches:
Hurricane Andrew(1992;Upper Keys)
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— Hurricane Georges (1998; Upper,Middle, and Lower Keys)
— Hurricane Irene(1999; Middle and Lower Keys)
— Hurricanes Rita and Wilma(2005; Upper,Middle, and Lower Keys)
— Tropical Storm Fay(2008)
— Hurricane Isaac(2012)
— Hurricane Irma(2017)
Hurricane Irma caused moderate to severe erosion along most beaches in the Middle and Lower Florida
Keys. As reported in the Hurricane Irma Post-Storm Report, as Irma made landfall in the Keys with the
eye around Cudj oe Key, areas within and to the east of the eye sustained major beach and dune erosion,
including complete destruction of entire dune systems in some cases along with destruction of fences and
beach access walkways. The Lower Keys to the west of the eye, in the weak quadrant, sustained only
minor beach erosion. Details by location can be found in the Post-Storm Report.
Erosion and accretion are natural processes that are likely to continue to occur. The likelihood of
significant instances of erosion will likely be tied to the occurrence of hurricane,tropical storm, and
nor'easter events. Although NCEI only reports on erosion impacts from 4 events over the 25-year span
between 1999 through 2024, DEP reports on an additional 7 events. In total,this equates to a 44 percent
chance of erosion occurring every year. Additionally, drawing from the likelihood of hurricanes,tropical
storms, and Nor'easters, erosion is likely to occur.
Probability: 3—Likely
As discussed under Climate Change in Section 4.5.5, climate change is expected to make heavy rain
events and tropical storms and hurricanes more frequent and intense. As a result, the erosion typically
caused by these storms can be expected to occur more frequently. Coastal erosion is also expected to
increase as a result of rising seas. A 2018 study found that globally,between 1984 and 2015 erosion
outweighed accretion. However,the study could not conclude the degree to which erosion during this
period is attributed to climate changes or increased coastal development.Nonetheless, increases in
erosion have been observed and are expected to continue.
S
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PEOPLE
Erosion is unlikely to have any direct impact on the health or safety of individuals. However, it can pose a
financial risk. Households and businesses along the shore may have to relocate or make expensive
structural changes on their property. Relocating is difficult for anyone,but it can be especially
challenging for lower-income individuals.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PPOP
E
Erosion can cause buildings to become closer to the water's edge, increasing the likelihood of water
inundating a structure. This can lead to damage or destruction of a foundation. In addition to structural
repairs,property owners may be subject to higher insurance premiums to account for increased risk.
Data is not available on specific property or critical facility risk to erosion.
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ENVIR(MMENT
Erosion can change the shape and characteristics of coastal shorelines. Eroded material may clog
waterways and decrease drainage capacity. Erosion can also negatively impact water quality by increasing
sediment loads in waterways.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONSEQUENCE ANALYSIS
Table 4.12 summarizes the potential negative consequences of erosion.
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Category Consequences
Public Erosion is unlikely to impact public health and safety.
Responders Erosion is unlikely to require immediate response or rescue operations.
Continuity of Operations Erosion is unlikely to impact public continuity of operations.
(including Continued
Delivery of Services)
Property, Facilities and Erosion can result in property damage if it is severe enough or if scour
Infrastructure occurs that undermines the integrity of structural foundations.
Environment Erosion can increase sediment loads in waterbodies and change riverine
and coastal topography.
Economic Condition of Beach re-nourishment projects to counter erosion are extremely costly.
the Jurisdiction Water dependent industries may suffer from lost shoreline and degraded
water quality.
Public Confidence in the Erosion is unlikely to impact public confidence.
Jurisdiction's Governance
Natural hazards are often interconnected. Any given hazard may lead to, or be spurred by, another hazard
—sometimes referred to as cascading disasters. Coastal erosion may be associated with tropical cyclones,
coastal storms, storm surge, and flood.
Increased development along the coastal areas vulnerable to erosion could speed up or intensify existing
erosion processes. Enhanced development anywhere on the coast could create new erosional hotspots if
not managed properly.
U.S. Highway 1 is at risk where erosion is occurring along Sea Oats Beach. Erosion that impacts US
Highway 1 could interrupt transportation on the entire Island Chain.
As highlighted in Table 4.11,numerous recreational beaches and parks are at risk due to Coastal Erosion.
Loss of such beaches would threaten the Keys' vital tourist economy. Mitigation strategies to address
losses caused by coastal erosion should align with the Strategic Beach Management Plan for the Florida
Keys Region.
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The following table summarizes coastal erosion hazard risk by jurisdiction. Exposure to erosion varies
slightly across jurisdictions,particularly in spatial extent. The ratings below are based on the length of
miles of critically eroded beaches in each jurisdiction. The impact of erosion across jurisdictions is
relatively similar—impacting public and private interests. Importantly, if erosion impacts transportation
infrastructure it effects public and private interests the same. Layton is the only jurisdiction without a
critically eroded shoreline, so it received impact and spatial extent ratings of 1; however, given the
number of hurricanes and storms that impact the county,there is still a possibility that erosion might
occur in Layton in the future,therefore it was rated as possible. Other jurisdictions received probability
ratings based on prevalence of past and current erosion challenges.
Jurisdiction Probability Impact Spatial WarningExtent Time Duration Score Priority
Key Colony
4 2 2 1 3 2.6 M
Beach
Key West 4 2 3 1 3 2.8 M
Layton 2 1 1 1 3 1.5 L
Marathon 3 2 3 1 3 2.5 M
Islamorada 4 2 2 1 3 2.6 M
Unincorporated
3 2 3 1 3 2.5 M
Monroe County
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Hazard Probability Impact Spatial Warning Time Duration PRI
Extent Score
More than 24 More than 1
Drought Likely Minor Large
h rs week
Drought is a deficiency in precipitation over an extended period. It is a normal,recurrent feature of
climate that occurs in virtually all climate zones. The duration of a drought varies widely. There are cases
when drought develops relatively quickly and lasts a very short period, exacerbated by extreme heat
and/or wind, and there are other cases when drought spans multiple years, or even decades. Studying the
paleoclimate record is often helpful in identifying when long-lasting droughts have occurred. Common
types of drought are detailed below in Table 4.13.
IIIIIII assflllilll °itlili IIII11111li�
Type Details
Meteorological Drought Meteorological Drought is based on the degree of dryness (rainfall deficit)
and the length of the dry period.
Agricultural Drought Agricultural Drought is based on the impacts to agriculture by factors such
as rainfall deficits,soil water deficits, reduced ground water,or reservoir
levels needed for irrigation.
Hydrological Drought Hydrological Drought is based on the impact of rainfall deficits on the
water supply such as stream flow, reservoir and lake levels,and ground
water table decline.
Socioeconomic Socioeconomic drought is based on the impact of drought conditions
Drought (meteorological,agricultural,or hydrological drought)on supply and
demand of some economic goods.Socioeconomic drought occurs when
the demand for an economic good exceeds supply as a result of a weather-
related deficit in water supply.
Source:National Drought Mitigation Center
The wide variety of disciplines affected by drought, its diverse geographical and temporal distribution,
and the many scales drought operates on make it difficult to develop both a definition to describe drought
and an index to measure it. Many quantitative measures of drought have been developed in the United
States, depending on the discipline affected,the region being considered, and the application. Several
indices developed by Wayne Palmer, as well as the Standardized Precipitation Index, are useful for
describing the many scales of drought.
The U.S. Drought Monitor provides a summary of drought conditions across the United States and Puerto
Rico. Often described as a blend of art and science,the Drought Monitor map is updated weekly by
combining a variety of data-based drought indices and indicators and local expert input into a single
composite drought indicator.
The Palmer Drought Severity Index(PDSI) devised in 1965,was the first drought indicator to assess
moisture status comprehensively. It uses temperature and precipitation data to calculate water supply and
demand, incorporates soil moisture, and is considered most effective for unirrigated cropland. It primarily
reflects long-term drought and has been used extensively to initiate drought relief. It is more complex
than the Standardized Precipitation Index(SPI) and the Drought Monitor.
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The Standardized Precipitation Index (SPI) is a way of measuring drought that is different from the
Palmer Drought Severity Index(PDSI). Like the PDSI,this index is negative for drought, and positive for
wet conditions. But the SPI is a probability index that considers only precipitation,while Palmer's indices
are water balance indices that consider water supply(precipitation), demand(evapotranspiration) and loss
(runoff).
The State of Florida adopted a Drought Action Plan in 2007 that specifies response strategies to varying
levels of declared drought. These rules provide the framework to coordinate statewide response to
drought.
Warning Time: I —More than 24 hours
Duration: 4—More than one week
Drought is a regional hazard that can impact large swaths of land—across county and even state lines. In
the event of a drought, the entirety of Monroe County will experience impacts.
Figure 4.2 below shows the U.S. Drought Monitor's drought ratings for Florida as of February 18,2025;
as of that date,Monroe County was experiencing some abnormally dry conditions (DO) in the western
side of the County and the southeastern corner, and moderate drought(D 1)throughout the rest of the
County.
Spatial Extent: 4—Large
IIIIIII IIIIIII
umu llll IIIIIII IIIIIII IIIIIII ° IIIIII Illilll°� IIII °° III IIIIIII ° IIIIIII°°°°°° IIIIIII IIIIIII IIIII� 2025
U.S. DroughtMonitor February 18, 2025
Florid (Released Thursday,Feb. ,2025),,
Valid 7 a.m.EST
I ten,sit1.
N one,
0 DD Abnormally Dry,
DI M Wera e Drought
D2.Severe,Drought
ll�
D3 Extreme,Drought
DA Exceptional Drought
The Df-o ghtMonitor-focuses on �-oa-scale
� o condrfions.Local condrfion s may vary F6r-ra ore
Author.,
Brian Fuchs
National Drought Mitigation renter
ff
U
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s -
dlro!ulgl INhitmio Irnii tolur.!ul Irnil.e l!ul
Source: U.S.Drought Monitor
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Drought extent can be defined in terms of intensity,using the U.S. Drought Monitor scale. The Drought
Monitor Scale measures drought episodes with input from the Palmer Drought Severity Index, the
Standardized Precipitation Index,the Keetch-Byram Drought Index, soil moisture indicators, and other
inputs as well as information on how drought is affecting people. Figure 4.3 details the classifications
used by the U.S. Drought Monitor. A category of D2 (severe) or higher on the U.S. Drought Monitor
Scale can typically result in crop or pasture losses,water shortages, and the need to institute water
restrictions.
Drought in Florida occurs on a regular, cyclical basis. The different areas of Florida are randomly affected
and sometimes equally affected. Counties that are expected to experience the most weeks of drought each
year are the northern and central counties.
Monroe County is susceptible to almost every level of drought on the U.S. Drought Monitor scale,
however since 2000 it has not experienced and exceptional drought. The most severe period of drought
since 2000 occurred in the spring of 2011 and reached extreme drought across 17% of Monroe County.
Impact: I —Minor
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III t::, I 'j/,j G."�..n"`II I''"-,t1P'ln�.;irIl11 V ::a�P'� n V'da��j.
��s t r e III iI'"° III II M�urj� icir cI"cir�Da to irX2 Ia a� l N m II e s���`nw a 9E��"��Yter s hart���;e."-�or r htll'lli��1�iV'_�II�Ps �^M I Ito°-°f; �.�
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�IIP' �,::,��Ili�:
ran"1id w6I",,d/C'"aflII II"'jeii teir
Source:US Drought Monitor
U.S. Drought Monitor provides historical data on droughts in Monroe County and records drought
intensity weekly throughout the country. The following figures show historical periods where each county
was considered in some level of drought condition. The color key shown in Figure 4.4 indicates the
intensity of the drought. According to the U.S. Drought Monitor, between January 1, 2000 and February
189 2025,Monroe County was in some level of drought condition 42% of the time, or 547 of 1,312
weeks. Most this time was spent in"abnormally dry"or"moderate" drought conditions; Monroe County
recorded 26 weeks in"extreme"drought.
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Source: U.S.Drought Monitor
The National Drought Mitigation Center's Drought Impact Reporter Dashboard summarizes drought-
related media reports starting in 2005. The following narratives were compiled from the Dashboard
search results for Monroe County:
— In November 2006, continuing drought conditions and related water supply concerns prompted the
South Florida Water Management District to impose voluntary water use restrictions for residents and
agriculture producers in Broward,Miami-Dade, Monroe, and Palm Beach Counties. Residents were
asked to limit lawn irrigation and personal water use.
— As a result of the ongoing drought in March 2007,the area received about half of the rainfall that they
normally received leading to low water levels for Lake Okeechobee—the areas main backup water
supply. Mandatory water restrictions were put into effect for the South Florida Water Management
District. The restrictions are intended to reduce water consumption by 15%. Farmers were moved to
Phase 2 to reduce consumption by 30%.
— More than 30 Florida counties were declared to be natural disaster areas by the U.S. Department of
Agriculture due to cold and drought between November 5 and December 17,2010.
— In March 2018,the Florida Forest Service warned of a heightened wildfire risk statewide as drought
conditions persisted. Extreme fire risk existed in Monroe,Miami-Dade, Broward,Lee, Martin,Indian
River, Brevard, Highlands,Polk and Orange counties.
The worst drought in Florida's recorded history was from 1954-1956 resulting in the loss of many of
crops and a lot timber were lost. The Northern Counties got the worst part of the drought but most of the
State was in drought for all of 1956. Another major drought occurred in 1981-1982 when rain was scarce,
and Lake Okeechobee reached the lowest water level ever recorded. All the State was in moderate or
severe drought,but many regions were out of drought by the end of 1981.
Florida had another severe drought from 1998 to 2001. During this, crops were destroyed, lake levels
were at an all-time low, and wildfires raged. This drought caused the water management districts to
restrict water use,municipalities to hike water rates, and many restaurants were ordered to stop serving
water except for to customers who asked. Several wildfires also occurred in 2007, including one in
Monroe County,because of a drought from 2006 to 2007. This period saw the largest rainfall deficit since
the 1950s and was considered a one in 25-year drought event.
From 2010 to 2012, the State saw a drought that affected most counties,but the northern central and
Panhandle regions were classified as in"extreme drought"for an extended period. Again in 2016, drought
conditions developed and lasted into 2017 causing many wildfires.
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There has never been a Presidential Major Disaster Declaration for drought in Florida. However, the
USDA has declared agricultural disasters because of drought. Disaster designations help producers get
loans and emergency assistance in these situations.
4.0
Based on historical occurrences,the probability that the County will experience some level of drought is
likely,with Monroe County in drought 42 percent of the time during the period from 2000 through 2024.
Over the same time period, approximately 133 weeks were categorized as a severe (D2) drought or
greater; which equates to a 10 percent chance of severe drought in any given week.
Probability: 3—Likely
The Fourth National Climate Assessment reports that average and extreme temperatures are increasing
across the country and average annual precipitation is decreasing in the Southeast. Heavy precipitation
events are becoming more frequent,meaning that there will likely be an increase in the average number of
consecutive dry days. As temperature is projected to continue rising, evaporation rates are expected to
increase,resulting in decreased surface soil moisture levels. Together, these factors suggest that drought
will increase in intensity and duration in the Southeast.
The Fifth National Climate Assessment upholds the climate trends reported in the Fourth Assessment and
presents additional patterns in the Southeast that exacerbate climate risk and impacts. These patterns
include population growth,high proportion of the population with health issues or underlying health
conditions, and a large, climate-dependent agricultural sector.'
S
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PEOPLE
Drought can affect people's physical and mental health. For those economically dependent on a reliable
water supply, drought may cause anxiety or depression about economic losses,reduced incomes, and
other employment impacts. Conflicts may arise over water shortages. People may be forced to pay more
for water, food, and utilities affected by increased water costs.
Drought may also cause health problems due to poorer water quality from lower water levels. If
accompanied by extreme heat, drought can also result in higher incidents of heat stroke and even loss of
human life.
The Florida Keys experience dry and wet seasons and are sometimes characterized by an and climate. As
the County is supplied by water from the mainland,residents always need to be aware of preserving
water,but especially during drought periods. The Florida Key's Aqueduct Authority and the South
Florida Water Management District will issue restrictions as needed. Such restrictions are predominantly
intended for lawn and vegetation maintenance,but irresponsible water use will affect residents' access to
water with continued development.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PPOPEPTY
Drought is unlikely to cause damages to the built environment, including private property or critical
facilities. However, in areas with shrinking and expansive soils, drought may lead to structural damages.
https://nca2023.globalchange.gov/chapter/22/
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Drought may cause severe property loss for the agricultural industry in terms of crop and livestock losses.
The USDA's Risk Management Agency(RMA)maintains a database of all paid crop insurance claims,
however no claims were made in Monroe County between 2007-2023 as a result of drought.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ENVIA10NMENT
Drought can affect local wildlife by shrinking food supplies and damaging habitats. Sometimes this
damage is only temporary, and other times it is irreversible. Wildlife may face increased disease rates due
to limited access to food and water. Increased stress on endangered species could cause extinction.
Residents are aware of the need to use native vegetation and ground cover to avoid the need for excessive
watering.
Drought conditions can also provide a substantial increase in wildfire risk. As plants and trees die from a
lack of precipitation,increased insect infestations, and diseases all of which are associated with
drought they become fuel for wildfire. Long periods of drought can result in more intense wildfires,
which bring additional consequences for the economy,the environment, and society. Drought may also
increase likelihood of wind and water erosion of soils.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONSEQ(
JENCE ANALYSIS
Table 4.14 summarizes the potential negative consequences of drought.
Co IIrise e III III IIIIIII s IilS IIIIIII���� IIIIIII °°°�
Category Consequences
Public Can cause anxiety or depression about economic losses,conflicts over
water shortages,reduced incomes,fewer recreational activities, higher
incidents of heat stroke,and fatality.
Responders Impacts to responders are unlikely. Exceptional drought conditions may
impact the amount of water immediately available to respond to
wildfires.
Continuity of Operations Drought would have minimal impacts on continuity of operations due to
(including Continued the relatively long warning time that would allow for plans to be made to
Delivery of Services) maintain continuity of operations.
Property, Facilities and Drought has the potential to affect water supply for residential,
Infrastructure commercial, institutional, industrial,and government-owned areas.
Drought can reduce water supply in wells and reservoirs. Utilities may be
forced to increase rates.
Environment Environmental impacts include strain on local plant and wildlife;
increased probability of erosion and wildfire.
Economic Condition of Farmers may face crop losses or increased livestock costs. Businesses that
the Jurisdiction depend on farming may experience secondary impacts. Extreme drought
has the potential to impact local businesses in landscaping, recreation
and tourism,and public utilities.
Public Confidence in the When drought conditions persist with no relief, local or State
Jurisdiction's Governance governments must often institute water restrictions,which may impact
public confidence.
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Natural hazards are often interconnected. Any given hazard may lead to, or be spurred by, another hazard
—sometimes referred to as cascading disasters. Drought may be associated with wildfire and extreme
heat.
Drought is predominantly controlled by larger weather patterns and less by human development.
However, increased development and the resulting increasing impervious surfaces would mean less
surface water would be able to directly infiltrate into the ground. Further,because the County's water is
predominantly supplied by the Biscayne aquifer in Miami-Dade County,new development and
population growth in Monroe County as well as Miami-Dade and other areas supplied by the aquifer will
increase water demand. In turn,this could lower the threshold for socioeconomic drought in terms of an
inability of water supply to mee water demand.
Drought is a regional hazard. If drought impacts Monroe County, it will similarly be impacting
neighboring counties and towns. The Keys get most of their drinking water from the Biscayne Aquifer
and supplement with water from the Floridan Aquifer. In the case of a drought,water supply could be
impacted. Water is already transported long distances to reach the keys, and in drought circumstances the
distance water must travel could increase.
Drought can create or exacerbate water quality issues. Though the Biscayne Aquifer is of superior quality,
the Floridan Aquifer is considered brackish and experience saltwater intrusion.
The following table summarizes drought hazard risk by jurisdiction. Drought risk is uniform across the
planning area. Warning time, duration, and spatial extent are inherent to the hazard and remain constant
across jurisdictions. Drought most commonly and severely impacts agricultural activities, of which there
are few in the County. In more heavily developed areas,the magnitude of drought is less severe,with
lawns and local gardens affected and potential impacts on already constrained local water supplies during
severe,prolonged drought.
Jurisdiction Probability Impact Spatial WarningDuration Score Priority
Extent Time
Key Colony 3 1 4 1 4 2.5 M
Beach
Key West 3 1 4 1 4 2.5 M
Layton 3 1 4 1 4 2.5 M
Marathon 3 1 4 1 4 2.5 M
Islamorada 3 1 4 1 4 2.5 M
Unincorporated 3 1 4 1 4 2.5 M
Monroe County
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X111TREME HEAT
Hazard Probability Impact Spatial Warning Time Duration PRI
Extent Score
Extreme Heat Likely Limited Large More than 24 More than 1 '7
hrs week
Per information provided by Ready.gov, in most of the United States extreme heat is defined as a long
period(2 to 3 days) of high heat and humidity with temperatures above 90 degrees. As temperatures rise,
our bodies naturally cool down by sweating. In extreme heat,the body must work extra hard to maintain a
normal temperature and sweating might not be enough to cool down. When this happens, a person's body
temperature rises faster than it can cool itself. Additionally,when the humidity is high, as is common
during extreme heat events in North Carolina, evaporative cooling through sweating becomes less
effective. Heat-related illnesses occur when the body overheats from exposure to high temperatures and in
severe cases can cause damage to the brain and other vital organs. Heat-related illnesses can also arise
from moderate to vigorous physical activity in hot situations.
Extreme heat often results in the highest annual number of deaths among all weather-related disasters. On
average,the number of extreme heat days has been increasing each year,putting residents at a higher risk
of heat-related illnesses. In 2023,more people in the United States died of heat-related illness than any
year on record. Per Ready.gov, older adults, children, and people with certain illnesses and chronic
conditions are at greater risk from extreme heat; and humidity increases the feeling of heat.
The National Weather Service(NWS)uses the heat index, also known as apparent temperature,to
determine when to issue health alerts. The heat index is a measure of how hot it really feels when the
relative humidity is considered along with the actual air temperature. In most areas of the country,the
NWS generally issues alerts "when the heat index is expected to exceed 105T -I IOT for at least two
consecutive days,"but they also work with local partners to determine the most appropriate conditions for
a specific geography.
Ambient air temperature is one component of heat conditions,with relative humidity being the other. The
relationship of these factors creates what is known as the apparent temperature. The Heat Index Chart in
Figure 4.5 uses both factors to produce a guide for the apparent temperature or relative intensity of heat
conditions.
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Heat, ICI l Tempe,rature, (QF1)
F 80 82 84 8,6 88 90 92 94 96, 2 104 106 108 110,
r „
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Li e4 o— ea Dis `s,"nth Protonged Expossure or'Strenuous Activity
ED Caut ionr�xIe CajtlIlII EM ria r1gelr EXtren ile Diai,17ger�
Source:National Weather Service(NWS)https://www.weather.gov/safety/heat-index
Note:Exposure to direct sun can increase Heat Index values by as much as 15°F.The shaded zone above 105°F
corresponds to a heat index that may cause increasingly severe heat disorders with continued exposure and/or
physical activity.
During these conditions,the human body has difficulties cooling through the normal method of the
evaporation of perspiration. Health risks rise when a person is overexposed to heat. The most dangerous
place to be during an extreme heat incident is in a permanent home,with little or no air conditioning.
Those at greatest risk for heat-related illness include people 65 years of age and older,young children,
people with chronic health problems such as heart disease,people who are obese,people who are socially
isolated, and people who are on certain medications, such as tranquilizers, antidepressants, sleeping pills,
or drugs for Parkinson's disease. However, even young and healthy individuals are susceptible if they
participate in strenuous physical activities during hot weather or are not acclimated to hot weather. Table
4.15 lists typical symptoms and health impacts of heat exposure.
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Heat Index(HI) Disorder
80-90° F(HI) Fatigue possible with prolonged exposure and/or physical activity
90-105°F(HI) Sunstroke, heat cramps,and heat exhaustion possible with prolonged exposure
and/or physical activity
105-130° F(HI) Heatstroke/sunstroke highly likely with continued exposure
Source:National Weather Service Heat Index Program,www.weather.gov/os/heat/index.shtmi
The NWS has a system in place to initiate alert procedures(advisories or warnings)when the Heat Index
is expected to have a significant impact on public safety. The expected severity of the heat determines
whether advisories or warnings are issued. A common guideline for issuing excessive heat alerts is when
the maximum daytime Heat Index is expected to equal or exceed 105 degrees Fahrenheit(OF) and the
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night time minimum Heat Index is 80°F or above for two or more consecutive days. A heat advisory is
issued when temperatures reach 105°F and a warning is issued at 115°F.
Impacts of extreme heat are not only focused on human health, as prolonged heat exposure can have
devastating impacts on infrastructure as well. Prolonged high heat exposure increases the risk of
pavement deterioration, as well as railroad warping or buckling. High heat also puts a strain on energy
systems and consumption, as air conditioners are run at a higher rate and for longer; extreme heat can also
reduce transmission capacity over electric systems.
Warning Time: I —More than 24 hours
Duration: 3—Less than one week
Monroe County and its jurisdictions are susceptible to high temperatures and incidents of extreme heat.
Spatial Extent: 4—Large
The extent of extreme heat can be defined by the maximum apparent temperature reached. Apparent
temperature is a function of ambient air temperature and relative humidity and is reported as the heat
index. The NWS Southern Region sets the following criteria for heat advisory and excessive heat
warning:
— Heat Advisory—Heat Index of 108°F or higher or temperature of 103°F or higher
— Excessive Heat Warning—Heat Index of I I YF or higher for any duration or temperature of 103°F
or higher
Table 4.16 notes the highest temperature on record at nine weather stations in Monroe County according
to the Southeast Regional Climate Center,which maintains temperature records for the highest maximum
temperature each month.
uum uum IIIIIII IIIIIII uu""'IIIIIII ii w uuuuuuuu uumm IIIIIII m m uum uuuu o uu IIIIIII V IIIIIII m n III,ouuuu.IIIIIII uuuum �� IIIIIII IIIIIII
Temperature Location Date
101OF Dry Tortugas August 1992
960F Key West I nt'I Airport August 2024*
100OF Bahia Honda State Park July 2023
970F Curry Hammock State Park July 2011*
990F Duck Key July 1987
930F Islamorada August 2010
980F Tavernier September 1963
95OF John Pennekamp State Park July 2018
970F Flamingo Ranger Station September 2013
Source: Southeast Regional Climate Center;only for stations with records within the past 20 years.
*Some maximum temperatures were recorded more than once,where this occurred,the most recent occurrence is
noted.
Impact: 2—Limited
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Table 4.17 provides maximum monthly temperature for 2000-2024 at the Key West Municipal Airport
weather station(KAPF). This location is used as an indicator for Monroe County overall. Data was
summarized with the Northeast Regional Climate Center's Climate Information for Management and
Operational Decisions (CLIMOD 2)tool which uses data from NCEI. The highest recorded temperature
is 96°F and occurred in both July 2023 and August 2023. The data also indicates that it is typical to have
maximum temperature days of 90°F and over from June to September.
uum a"I Illlllh IIIIIII 4���,,u°i � IIIIK. WestIIIIIII IIIIIII IIIIIII IIIIIII I uull Illllu IIIIIII uu IIIIIII
Year Maximum Temperature by Month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2000 82 83 86 86 90 91 93 91 91 89 84 82
2001 81 83 85 86 88 90 91 92 90 88 82 83
2002 82 81 85 86 89 89 92 91 90 89 87 83
2003 80 83 86 85 88 90 92 92 91 90 86 81
2004 81 81 82 84 87 90 91 91 90 88 87 84
2005 80 81 83 84 89 90 92 93 90 88 84 82
2006 81 82 83 85 88 90 90 92 90 89 84 83
2007 83 82 84 86 87 93 94 94 95 90 87 83
2008 82 84 84 85 91 91 91 92 91 87 84 80
2009 81 79 84 86 89 91 94 93 92 91 86 84
2010 80 80 82 84 89 92 91 92 90 87 85 78
2011 79 80 84 86 89 90 93 92 92 88 84 81
2012 81 83 82 85 87 89 88 90 90 89 81 83
2013 82 82 84 87 89 91 90 90 90 88 85 83
2014 82 82 83 87 88 91 93 93 90 90 83 82
2015 82 82 84 90 89 94 94 94 94 90 87 84
2016 84 81 83 85 89 91 93 92 92 91 84 85
2017 83 83 86 85 90 91 92 94 93 89 86 83
2018 79 83 83 86 86 90 94 94 95 91 88 86
2019 83 85 85 87 94 93 93 94 92 89 88 85
2020 82 85 85 89 90 92 94 93 93 91 88 82
2021 79 84 85 87 90 91 93 91 92 89 84 84
2022 83 81 84 86 89 91 93 92 92 88 87 83
2023 83 86 87 88 92 95 96 95 95 91 85 85
2024 81 80 85 87 93 92 92 96 94 89 86 82
Max 84 85 87 90 94 94 94 96 95 91 88 85
Mean 81 82 84 86 89 91 92 93 92 89 85 83
Source:Northeast RegionalClimate
'-C III
Data was gathered from the Northeast Regional Climate Center's CLIMOD 2 Tool using the Key West
airport weather station as an approximation for Monroe County. Based on 25 years of available data,the
Region regularly experiences maximum temperatures from June to September that can impact public
health and safety.
Probability: 3—Likely
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Research shows that average temperatures will continue to rise in the Southeast United States and
globally. Per the Fifth National Climate Assessment, "The number of extreme warm days (above 95°F) is
expected to continue increasing with every increment of global warming"and that"heatwaves in the
Southeast are happening more frequently and are occurring during a longer heat season, with some cities
also showing increasing trends in their duration and intensity."Additional heat stresses can be attributed
to the urban heat island effect which can increase the temperature of those living in urban environments
compared to rural areas. The number of days over 95°F is expected to increase by between 10 and 40
days annually within the Everglades area of Monroe County as shown in Figure 4.6. Data is unavailable
for the Florida Keys.
IIIIIII"Illillle 4, IIIIIII IIIIIII Is ected 0 III° III of IIIIIII' °°° IIIIIII'
Inequitable Heat Burden and Future Heat Exposure
Energy-burdened households ehol b Projected chiange in a tr m heat days,
overlap with communities of color 2050 compared to 1991— 0 0
30,
lJ lt�r
�I
%Energy- 10 Change in INumher of ICDa s at or Above 950F 111,
burdened
f
households .
0 10 20 30 40 50
25 40 90
%1311POIC popullation
Source:USGCRR 2023:Fifth National Climate Assessment
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
No data is available to assess the vulnerability property in the planning area to extreme heat. Vulnerable
populations based on age are estimated according to Census data. Data on other vulnerable populations is
not available.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PEOPLE
Extreme heat can cause heat stroke and even loss of human life. The elderly and the very young are most
at risk to the effects of heat. People who are isolated are also more vulnerable to extreme heat. The table
below summarizes the percent of each jurisdiction's total population that falls within these age groups.
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Population under 5 Population over 65
Jurisdiction years of age(%) years of age(%)
Islamorada 4% 30%
Key Colony Beach 0% 55%
Key West 5% 21%
Layton 4% 36%
Marathon 5% 21%
Unincorporated Monroe County 4% 26%
Monroe County Total 4% 24%
Source:U.S.Census Bureau,American Community Survey 2019-2023 5-year estimates
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PERTY
miiii
Extreme heat is unlikely to cause significant damages to the built environment. However,road surfaces
can be damaged as asphalt softens, and concrete sections may buckle under expansion caused by heat.
Train rails may also distort or buckle under the stress of head induced expansion. Power transmission
lines may sag from expansion and if contact is made with vegetation the line may short out causing power
outages. Additional power demand for cooling also increases power line temperature adding to heat
impacts.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ENVIRONMENT
Wild animals are vulnerable to heat disorders like humans, including mortality. Vegetation growth will
be stunted, or plants may be killed if temperatures rise above their tolerance extremes.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONSEQUENCE ANALYSIS
Table 4.18 summarizes the potential negative consequences of extreme heat.
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Category Consequences
Public Extreme heat may cause illness and/or death.
Responders Consequences may be greater for responders if their work requires
exertion and/or wearing heavy protective gear.
Continuity of Operations Continuity of operations is not expected to be impacted by extreme heat
(including Continued because warning time for these events is long.
Delivery of Services)
Property, Facilities and Minor impacts may occur,including possible damages to road surfaces
Infrastructure and power lines.
Environment Environmental impacts include strain on local plant and wildlife,including
potential for illness or death.
Economic Condition of Farmers may face crop losses or increased livestock costs.
the Jurisdiction
Public Confidence in the Extreme heat is unlikely to impact public confidence.
Jurisdiction's Governance
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Natural hazards are often interconnected. Any given hazard may lead to, or be spurred by, another hazard
—sometimes referred to as cascading disasters. Extreme heat may be associated with drought and wildfire.
More intensive development can increase the urban heat island effect—where the concentration of
structures, infrastructure, and human activity traps and stores heat resulting in localized"heat islands."
Information is not available on the extent to which impervious surface coverage has changed since the
adoption of the previous hazard mitigation plan.
Populations most vulnerable to the effects of excessive heat are children under the age of 5 and those over
the age of 65. Key Colony Beach and Layton have more than a third of their population in the 65 and
above category. Key west has over 5% of its population in the under 5 category.
The county and participating jurisdictions may want to consider identifying community spaces that can
serve as cooling centers and publicize those spaces in advance of forecasted extreme heat.
The following table summarizes extreme heat hazard risk by jurisdiction. Extreme heat risk does not vary
significantly by jurisdiction.
Spatial Warning
Jurisdiction Probability Impact Extent Time Duration Score Priority
Key Colony 3 2 4 1 3 2.7 M
Beach
Key West 3 2 4 1 3 2.7 M
Layton 3 2 4 1 3 2.7 M
Marathon 3 2 4 1 3 2.7 M
Islamorada 3 2 4 1 3 2.7 M
Unincorporated 3 2 4 1 3 2.7 M
Monroe County
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
5,4 FLOOD
1
Hazard Probability Impact Spatial Warning Time Duration PRI
Extent Score
Highly
Flood Critical Large 6 to 12 hours Less than 1 week
Likely
Flooding is defined by the rising and overflowing of water onto normally dry land. As defined by FEMA,
a flood is a general and temporary condition of partial or complete inundation of two or more acres of
normally dry land area or of two or more properties. Flooding can result from an overflow of inland
waters or an unusual accumulation or runoff of surface waters from any source.
Flooding causes more damage in the United States than any other severe weather related event, an
average of$5 billion a year. Approximately 90 percent of presidentially declared disasters result from
flood-related natural hazard events. Taken as a whole,more frequent, localized flooding problems that do
not meet federal disaster declaration thresholds ultimately cause the majority of damages across the
United States.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
SOURCES L D
Per the 2005 Flood Insurance Study(FIS), flooding results mainly from storm surge flooding in the areas
of the county bordering the Atlantic Ocean and Gulf of Mexico when tidal surges,wave action, and heavy
rainfall combine.
The general topography of Monroe County is extremely flat,with natural elevations of 4 to 7 feet above
mean sea level. Shallow slopes and the generally low-lying nature of the keys makes the County
vulnerable to flooding during coastal events and heavy rains. Some rainfall in the area runs off into the
surrounding seas and other rainfall that is caught in closed basins can drain relatively quickly into
underlying coral rock and limestone soils that have high infiltration rates. However, there are still
instances of rainfall flooding that does not runoff or drain quickly, causing water to accumulate in ponded
areas. Additionally, there are approximately 170 miles of canals in the Florida Keys. Mismanagement and
improper cleaning of these canals also causes flooding from heavy rains,hurricanes, and tidal systems.
Coastal Tidal Flooding: All lands bordering the Atlantic and Gulf Coasts are susceptible to tidal effects
and flooding. Coastal land such as sand bars,barrier islands and deltas provide a buffer zone to help
protect human life and real property relative to the sea much as flood plains provide a buffer zone along
rivers and other bodies of water. Coastal floods usually occur because of abnormally high tides or tidal
waves, storm surge and heavy rains in combination with high tides,tropical storms and hurricanes.
Shallow Ponding: Because much of the County is flat,whatever rainfall doesn't flow from an area tends
to pond and percolate into the ground, causing water tables to rise during the wet season and periods of
extended rainfall and reducing the capacity for soil storage and infiltration.
Flash or Rapid Flooding: A flash flood occurs when water levels rise at an extremely fast rate as a result
of intense rainfall over a brief period,possibly from slow-moving intense thunderstorms and sometimes
combined with saturated soil, or impermeable surfaces. Flash flooding can happen in Special Flood
Hazard Areas (SFHAs) as delineated by the National Flood Insurance Program(NFIP) and can also
happen in areas not associated with floodplains. Flash flood hazards caused by surface water runoff are
most common in urbanized areas,where greater population density generally equates to more impervious
surface(e.g.,pavement and buildings)which increases the amount of surface water generated.
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Flash flooding is a dangerous form of flooding which can reach full peak in only a few minutes. Rapid
onset allows little or no time for protective measures. Flash flood waters move at very fast speeds and
can move boulders, tear out trees, scour channels, destroy buildings, and obliterate bridges. Flash
flooding can result in higher loss of life,both human and animal,than slower developing river and stream
flooding.
Localized/Stormwater Flooding: Localized stormwater flooding can occur in Monroe County.
Localized stormwater flooding occurs when heavy rainfall and an accumulation of runoff overburden the
stormwater drainage system. The cause of localized stormwater flooding in Monroe County can be
attributed to its generally flat topography, among other factors. Localized flooding may be caused by the
following issues:
— Inadequate Capacity—An undersized/under capacity pipe system can cause water to back-up behind
a structure which can lead to areas of ponded water and/or overtopping of banks.
— Clogged Inlets—Debris covering the asphalt apron and the top of grate at catch basin inlets may
contribute to an inadequate flow of stormwater into the system. Debris within the basin itself may
also reduce the efficiency of the system by reducing the carrying capacity.
— Blocked Drainage Outfalls—Debris blockage or structural damage at drainage outfalls may prevent
the system from discharging runoff,which may lead to a back-up of stormwater within the system.
— Improper Grade—Poorly graded asphalt around catch basin inlets may prevent stormwater from
entering the catch basin as designed. Areas of settled asphalt may create low spots within the
roadway that allow for areas of ponded water.
While localized flooding may not be as destructive as coastal flooding, it is a chronic problem. The
repetitive damage caused by such flooding can add up. Sewers may back up,yards can be inundated, and
homes,businesses and vehicles can be flooded. Drainage and sewer systems not designed to carry the
capacity currently needed to handle increased storm runoff can cause water to back into basements and
damage mechanical systems. These impacts, and other localized flooding impacts, can create public
health and safety concerns.
In addition to these different types of flooding, flooding in Monroe County is a factor of the amount and
timing of rainfall and the tide cycle elevation. The amount of rainfall occurring in March would not have
the same flooding effect if the same amount occurred in September. During the dry season,the water
table elevation typically drops to several feet below natural ground elevations. This allows for larger
storage volume in the soil, lakes, canals, ditches, and swales. During the wet season,however, the water
table elevation is often near the natural ground surface, lakes are filled, and ditches are flowing. The
rainfall added to such conditions creates more stormwater runoff.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
A floodplain, as shown in Figure 4.7 and Figure 4.8, is flat or nearly flat land adjacent to a stream,river,
or body of water that experiences occasional or periodic flooding. In riverine floodplains, it includes the
floodway, which consists of the stream channel and adjacent areas that carry flood flows, and the flood
fringe,which are areas covered by the flood,but which do not experience a strong current. Floodplains
are made when floodwaters exceed the capacity of the main channel or escape the channel by eroding its
banks. When this occurs, sediments(including rocks and debris) are deposited that gradually build up
over time to create the floor of the floodplain. Floodplains generally contain unconsolidated sediments,
often extending below the bed of the stream. In coastal floodplains, zones are distinguished by wave
heights.
Floodplain boundaries are designated and routinely updated through cooperation between local
governments, states and the FEMA. Flood Insurance Study findings are shown on Flood Insurance Rate
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Maps (FIRMs) and describe various flood hazard zones based on flood height exceedance return periods.
Flood hazard zone designations depend on local conditions and map issue dates,but all will show the
100-year or base flood elevation(I-percentannual chance flood), as well as some areas of the 500-year
floodplain(0.2-percent annual chance flood).
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In coastal areas, flood hazards typically include the added risk of wave action delineated by the VE Zone
and Coastal AE Zone. Wave height and intensity decreases as floodwaters move inland. Figure 4.8 shows
the typical coastal floodplain and the breakdown of flood zones in these settings. These flood zones are
discussed further in Table 4.19
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In its common usage,the floodplain most often refers to that area that is inundated by the"100-year
flood,"which is the flood that has a 1 percent chance in any given year of being equaled or exceeded.
The 500-year flood is the flood that has a 0.2 percent chance of being equaled or exceeded in any given
year. The potential for flooding can change and increase through various land use changes and changes to
land surface,which result in a change to the floodplain. A change in environment can create localized
flooding problems inside and outside of natural floodplains by altering or confining natural drainage
channels. These changes are most often created by human activity.
The 1-percent-annual-chance flood,which is the minimum standard used by most federal and state
agencies, is used by the National Flood Insurance Program(NFIP) as the standard for floodplain
management and to determine the need for flood insurance. Participation in the NFIP requires adoption
and enforcement of a local floodplain management ordinance which is intended to prevent unsafe
development in the floodplain,thereby reducing future flood damages. Participation in the NFIP allows
for the federal government to make flood insurance available within the community as a financial
protection against flood losses. Since floods have an annual probability of occurrence, have a known
magnitude, depth and velocity for each event, and in most cases,have a map indicating where they will
likely occur, they are in many ways often the most predictable and manageable hazard.
Warning Time: 3— 6 to 12 hours
Duration: 3—Less than I week
Regulated floodplains are illustrated on FIRMs,which are the official maps for a community on which
FEMA has delineated both the Special Flood Hazard Areas (SFHAs) and the risk premium zones
applicable to the community. SFHAs represent the areas subject to inundation by the 1-percent-annual-
chance flood event. Table 4.19 summarizes the flood insurance zones identified by the Digital FIRMs
(DFIRMs). 4.19 reflects the effective mapped flood insurance zones for Monroe County and Figure 4.10
shows the mapped preliminary DFIRM. Maps for each participating jurisdiction are provided in the
jurisdictional annexes.
Flooding can occur anywhere in Monroe County. Flood risk is not limited to the 1%-annual-chance
floodplain.
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Zone Description
Also known as the coastal high hazard areas.They are areas subject to high velocity
water including waves;they are defined by the 1%annual chance(base)flood limits
VE (also known as the 100-year flood)and wave effects 3 feet or greater.The hazard zone is
mapped with base flood elevations (BFEs)that reflect the combined influence of
stillwater flood elevations, primary frontal dunes,and wave effects 3 feet or greater.
AE Zones,also within the 100-year flood limits,are defined with BFEs that reflect the
combined influence of stillwater flood elevations and wave effects less than 3 feet.The
AE Zone generally extends from the landward VE zone limit to the limits of the 100-year
flood from coastal sources,or until it reaches the confluence with riverine flood sources.
AE The AE Zones also depict the SFHA due to riverine flood sources, but instead of being
subdivided into separate zones of differing BFEs with possible wave effects added,they
represent the flood profile determined by hydrologic and hydraulic investigations and
have no wave effects.The Coastal AE Zone is differentiated from the AE Zone by the
Limit of Moderate Wave Action (LiMWA) and includes areas susceptible to wave action
between 1.5 to 3 feet.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Zone Description
Areas subject to inundation by 1-percent-annual-chance shallow flooding (usually sheet
flow on sloping terrain)where average depths are between one and three feet.Average
AO flood depths derived from detailed hydraulic analyses are shown in this zone.
Mandatory flood insurance purchase requirements and floodplain management
standards apply.
Moderate risk areas within the 0.2-percent-annual-chance floodplain,areas of 1-
0.2%Annual percent-annual-chance flooding where average depths are less than 1 foot,areas of 1-
Chance percent-annual-chance flooding where the contributing drainage area is less than 1
(Shaded Zone square mile,and areas protected from the 1-percent-annual-chance flood by a levee. No
X) BFEs or base flood depths are shown within these zones. (Zone X(shaded) is used on
new and revised maps in place of Zone B.)
Minimal risk areas outside the 1-percent and .2-percent-annual-chance floodplains. No
Zone X(Unshaded) BFEs or base flood depths are shown within these zones.Zone X(unshaded) is used on
new and revised maps in place of Zone C.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Further,the LMSWG and the previous LMS plan identified the following areas more vulnerable to
coastal flooding and/or pooling of rainfall flooding from heavy rains. Locations along Highway:
— MM 109 in the Upper Keys.
— MM 106, Lake Surprise Area; vulnerable to the effects of wind driven wave run-up from ENE and
W/SW directions; heavy rainfall results in ponding.
— MM 111, the exposed beach area along the 17-mile stretch bordering Barnes Sound, experiences
wave runup or"piling"with strong E and NE winds.
— MM 113, the Point Laura Marina Area,borders Barnes Sound and is susceptible to strong E and NE
winds.
— MM 73.5-74.5, the Lower Matecumbe area known as"Sea Oats Beach,"vulnerable to NE/E/SE wind
driven wave run-up.
— MM 30-321 Big Pine Key; the area north of the Big Pine Plaza Shopping Center encompassing
Wilder Road and Key Deer Boulevard, while not normally vulnerable to storm surge effects,
experience rainfall ponding.
— MM 9-101 Big Coppitt Key, Bayside, experience wind-generated wave run-up.
These areas of repetitive flooding may impact evacuation routes during an extended rainfall or wind-
driven flood event.
Spatial Extent: 4—Large
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
AREAS LIKELY TO FLOOD IN THE FU I I JRE
Based on this assessment of the locations vulnerable to current flooding and potential changes to flood
conditions discussed under the Climate Change and Changes in Development sections below, the
following locations were identified as areas that are likely to flood in the future:
— Special Flood Hazard Areas and 0.2% annual-chance floodplains: According to both the effective and
preliminary FIRMs, about 94 percent of Monroe County is located within the SFHA, and between 0.1
and 0.2 percent of the county is located within the 0.2%annual-chance floodplain. These areas are at
high risk of future flooding. While new development and redevelopment is limited, changes in
floodplain development and future development within the watershed in general as well as climate
change-driven changes in rainfall probabilities and intensities could increase the size of the SFHAs
and/or the depth of flooding in these areas in the future.
— Localized stormwater flooding areas: It is highly likely that areas without stormwater drainage
infrastructure or with undersized or underperforming drainage infrastructure will continue to
experience localized flooding problems. Specific problem locations are listed above. Areas with
vacant land that may be developed and converted into impervious surface area may be more likely to
flood in the future if steps are not taken to mitigate the impacts of development.
— Repetitive loss areas: Many repetitive losses can be attributed to coastal flooding and storm surge
events which may become more severe due to sea level rise. Therefore, it is very likely that
unmitigated repetitive loss properties will continue to flood in the future. Repetitive loss counts are
detailed later in this section and areas vulnerable to storm surge are detailed in Section 4.5.7.
— Areas vulnerable to sea level rise: Sea level rise will increase vulnerability to high tide flooding and
coastal flooding and can even increase stormwater flooding if drainage outfalls are impeded by higher
water levels. Areas directly vulnerable to sea level rise are detailed in Section 4.5.5. These areas are
likely to flood in the future.
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Flood extent can be defined by the amount of land in the floodplain and the potential magnitude of
flooding as measured by flood height and velocity. FEMA Flood Insurance Studies define the probability
of flooding by flood events of a magnitude which are expected to be equaled or exceeded once on the
average during a specific time period, or recurrence interval.
Per this assessment, approximately 99 percent of Monroe County falls within the SFHA, an additional 5.2
percent of the County area is open water. Therefore, effectively 99 percent of the county's land area (not
classified as open water) is within the SFHA. Table 4.20 provides a summary of the County's total area
by flood zone on the 2005 effective DFIRM and a comparison to flood zone acreage on the preliminary
DFIRM(released in December 2019). Changes from the effective DFIRM include over 62,000 acres of
land no longer in the AE zone, over 44,000 acres now classified in the A zone,which was previously not
included in the County's flood maps, and over 18,000 acres now classified as VE. Additionally, the
preliminary maps represent an 79%increase in acreage in the 0.2% annual chance flood zone. Figure 4.11
shows the depth of flooding predicted from a I% annual chance flood. Details on individual jurisdiction's
flood zone acreage are available in the jurisdictional annexes.
°°° Illlllh°°IIIIIII 4 IIIIIII IIIIIII °°°° i IIIIII IIIIII IIIIIII III °°°'
Effective DFIRM(2005) Preliminary DFIRM(2019) Change from
Acreage Percent of Acreage Percent of Effective
Flood Zone Total(%) Total M) (acres)
A 0.0 0% 44,683.8 5.1% 44,683.8
AE 630,059.3 71.9% 567,352.5 64.7% -62,706.8
AO 3.5 0.0% 19.1 0.0% 15.6
VE 198,089.7 22.6% 216,144.0 24.7% 18,054.3
0.2%Annual Chance 1,195.8 0.1% 2,141.4 0.2% 945.6
Flood Hazard (Shaded X)
Unshaded X 1,556.9 0.2% 849.3 0.1% -707.6
Open Water 45,809.2 5.2% 45,524.3 5.2% -284.9
Tota 1 876,714.4 -- 876,714.4 -- 0.0
SFHA Total 8289152.5 94% 828,199.4 94% 46.9
Source:FEMA Effective DFIRM,Preliminary DFIRM
Note: The differences between the effective FIRM and the preliminary FIRM are significant and will
likely still change. These details are provided here only as a comparison—all further flood analysis is
based in the 2005 Effective DFIRM.
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Almost the entire planning area is within areas of high flood risk, as defined by the SFHA on FEMA's
2005 Flood Insurance Rate Maps as vulnerable to the 1-percent-annual-chance flood event. However,
while the 1-percent-annual-chance flood is the basis for floodplain management under the NFIP,that does
not mean that properties outside the SFHA are not at risk of flooding. Floods of other magnitudes may
occur. The remainder of the planning areas is subject to moderate and low flood risk. Low risk is not no
risk; areas outside the SFHA may still be flooded by heavy rain events and/or more severe coastal floods.
Impact: 3—Critical
Table 4.21 details the historical occurrences of flooding identified from 2000 through 2024 by NCEI
Storm Events database. It should be noted that only those historical occurrences listed in the NCEI
database are shown here. Other,unrecorded or unreported events may have occurred within the planning
area during this timeframe. Further, while storm surge events are the dominant cause of flooding in the
County,they will be considered and detailed in the Tropical Cyclones Section 4.5.5.
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Type Event Count Deaths/injuries Reported Property Damage
Coastal Flood 14 0/0 $100,000
Flood 24 0/0 $56,000
Heavy Rain 11 0/0 $0
Flash Flood - - -
Total 49 0/0 $1561,000
Source:NCEI
Note:No flash flood events were recorded in the NCEI database
According to NCEI, 49 recorded flood events affected the planning area from 2000 to 2024 causing an
estimated$156,000 in property damage,with no fatalities,injuries, or crop damage. Note that damage
numbers reported here are only those reported by NCEI,which does not include insurance damage
estimates; actual damages due to flood in County are likely higher.
To supplement the data from NCEI,the following table summarizes the number and dollar value of NFIP
claims paid in Monroe County by year.Note that these claims also include those made for flooding due to
hurricanes.
°°°, Illlllh°°°I IIIIIII 4 Illilll 21 IIIIIII Illilll IIIIIII s IIIII�)aiita IIIII IIIIIII IIIIII IIIIIII IIIIIIICouIIIIIIIiity
Year Number of Claims Total Value of Claims
2000 23 $63,213.40
2001 34 $183,507.10
2002 5 $1,740.23
2003 5 $5,607.30
2004 25 $66,398.20
2005 9,186 $335,370,185.90
2006 22 $153,652.80
2007 7 $24,196.80
2008 44 $395,397.10
2009 7 $74,009.10
2010 17 $121,885.81
2011 41 $325,979.97
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Year Number of Claims Total Value of Claims
2012 18 $55,824.92
2013 14 $23,9402.23
2014 13 $224,458.63
2015 6 $48,734.98
2016 3 $8,950.04
2017 8,190 $290,459,534.30
2018 8 $0
2019 7 $4,025.38
2020 77 $1,193,608.10
2021 3 $22,574.00
2022 570 $28,391,407.08
2023 30 $706,708.91
2024 21 $210,307.03
2025 9 $168,863.82
Total 18,385 $658,520,173.13
Source:NFIP Claims Data,accessed April 2025
The following event narratives are provided in the NCEI Storm Events Database and illustrate the impacts
of flood events on the county:
February 12,2007—A line of thunderstorms developed along a developing warm front in the Florida
Straits. Several thunderstorm cells tracked northeast across Duck Key and Long Key,producing very
heavy rainfall and minor flooding.A Long Key State Park, 5.38 inches of rain were observed in two
hours,with a final storm total rainfall of 9 inches. State Park Rangers reported 6 campsites were washed
out and a park road was flooded. There were also reports of a flooded parking lot at the Layton Post
Office. 5.6 inches of rain were reported in Duck Key.
August 18,2008—Tropical Storm Fay moved through the Lower Florida Keys during the evening of
August 18, 2008,producing tropical storm force winds and heavy rainfall. Rainfall produced widespread
street flooding in Key West. This flooding caused a small section of the tarmac at the Key West
international airport to collapse. In total,rainfall amount of 3.5 to 4.0 inches were reported in the Key
West area,up to 7.27 inches in Marathon, and 7.05 inches in Ramrod Key,resulting in temporary street
and low area flooding.
September 29,2010- Thunderstorms focused along a convergence zone indirectly related to Tropical
Storm Nicole produced heavy rainfall and extensive street flooding over Lower and Upper Matecumbe
Keys within the Village of Islamorada. Water entered one home on Lower Matecumbe Key, causing one
family to be temporarily displaced.
October 17,2011—Persistent showers and thunderstorms moved across the extreme Lower Florida Keys
due to lower pressure over the Yucatan Peninsula. Street flooding of 3 to 4 feet deep was reported at the
corners of White and Eaton Streets and Caroline and Margaret Streets in Old Town Key West, as well as
at Donald and 20th Streets in New Town Key West. Several cars were stranded due to street flooding
along South Roosevelt Boulevard between the Overseas Highway and Flagler Avenue, as well as near 1 st
Street and North Roosevelt Boulevard. Isolated low elevation home flooding was observed in Mid Town
Key West along Fogarty Avenue.
October 19,2011 -A low pressure system in the eastern Gulf of Mexico assisted in the formation of
three separate squall lines,which moved east through the Florida Keys and surrounding coastal waters
from the evening of October 18th through morning of October 19th. Widespread gale-force wind gusts
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and street flooding occurred across the Lower and Middle Florida Keys, along with a damaging
waterspout across the Anchorage at Key West Harbor. Flooding was observed at Sigsbee Park at
Dredgers Key in Key West, as well as up to three feet deep at the Stadium Apartments in New Town Key
West. Flooding of side streets up to two feet was observed in Marathon.
May 2,2013—Thunderstorms developed in cyclic fashion over Key West and adjacent nearshore waters
over a duration of three hours,producing widespread street flooding and flooding to businesses along the
lower elevations of Key West. Flooding was reported in the Old Town Historic District of Key West,
including up to two feet of flood depth at the corner of Front and Simonton Streets, at Duval and Greene
Streets, and at the corner of White and Eaton Streets and up to three feet in depth at Duval and Front
Streets. Up to 7 inches of rain was measured at the Key West Wastewater Treatment Plant on the south
end of Fleming Key. Several businesses had water inundation to around 6 inches in depth. Significant
flooding was observed on Patterson Street in Mid-Town Key West, causing a commercial-sized dumpster
to float down the street. Further flooding included inundation of two and a half feet along Thompson and
George Streets, and up to one foot in depth at the corner of Jose Marti Drive and North Roosevelt
Boulevard. A retention and floodwater staging pond overflowed due to blocked drainage culverts leading
to the Gulf of Mexico under North Roosevelt Boulevard. Street flooding up to two feet in depth was also
observed along South Roosevelt Boulevard between Flagler Avenue and the Overseas Highway.
September 21,2015-Minor coastal flooding occurred in a few Florida Bayside neighborhoods in North
Key Largo, due mostly to persistent large northeast fetch occurring offshore the southeast U.S. Coast.
Due to the very small diurnal tidal range of 2 to 3 inches in the far eastern end of Florida Bay and
Blackwater Sound. Continuous coastal flooding of streets began approximately 17:00 EST on September
21 st in the area of Adams and Shaw Drive in North Key Largo's bayside, gradually expanding to adjacent
streets throughout the Blackwater Sound and Sexton Cove shorelines. While no homes or businesses
were flooded,the depth of water reached as high as 0.8 feet by September 30th,with a couple streets
becoming impassable to small vehicles. The flooding was confirmed by Monroe County Emergency
Management and Key Largo Fire Rescue.
October 5,2017-Abnormally high spring tides occurred throughout the Florida Keys as result of
seasonal autumn King Tides and prolonged strong northeast to east winds. Coastal Flooding with
saltwater depth 3 to 6 inches above street level observed at the corner of Truman Avenue and North
Roosevelt Boulevard in Key West. U.S. Coast Guard and National Weather Service personnel confirmed
further coastal flooding in the Upper Florida Keys,with saltwater depth 6 to 8 inches above streets on the
oceanside of Rock Harbor, and minor flooding of the U.S. Highway 1 northbound lane at Sea Oats Beach,
Lower Matecumbe Key, near Mile Marker 74.5. Coastal Flooding was also confirmed along West Ocean
Drive in Key Colony Beach,with saltwater depth 6 inches over the road. Coastal flooding of near 1 foot
in depth was observed near Sombrero Beach in Marathon.
December 12,2018—A strong extratropical cyclone moving northeast over the Gulf of Mexico pushed a
cold front through the Florida Keys. Strong west winds overspread the Florida Keys and Florida Bay,
causing water levels to rise quickly. Water levels along several Florida Bay neighborhoods from near
Mile Marker 100 through 106 off the Overseas Highway reported flooding of yards, docks, and streets
generally from 6 to 18 inches in depth. Several ground-floor slab homes had flooding of attached porches,
with water levels nearly entering the homes.
May 10,2020—Thunderstorms developed in the early morning hours just north of a stationary front
extending west-to-east across the Straits of Florida. Heavy rainfall produced widespread flooding on
Long Key including the City of Layton. Secondary roads and parking lots were flooded through most
portions of the City of Layton. Rainfall more than 4 inches was estimated by radar.
June 4,2022—Rainfall from the early morning hours of June 3rd through the afternoon of June 4th
totaled generally 6 to 11 inches in the upper Florida Keys, from 5.5 to 8.5 inches in the middle Florida
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Keys, and 3 to 6 inches in the lower Florida Keys. Isolated flood damages occurred in the upper Florida
Keys where rainfall was heaviest. Localized street flooding was observed in several neighborhoods in the
Key Largo through Tavernier areas of the upper Florida Keys. In addition, a few boats on lifts with drain
plugs left in were damaged or dropped into local canals due to the weight of accumulated rainfall
onboard.
November 15,2023— Strong low pressure over the eastern Gulf of Mexico resulted in a slow-moving
pre-frontal trough focusing heavy convective rainfall over portions of the middle and upper Florida Keys.
Heavy rainfall estimated by radar of 5 to 8 inches produced extensive poor drainage area flooding across
Marathon and Key Colony Beach,with some streets with one to two feet depth of water. Several motor
vehicles stalled due to flooding.
December 17,2023—Bands of showers moved across the region on the 16th and early on the 17th,
producing wind gusts up to 50-60 mph over the waters. Due to the prolonged period of gusty gradient
winds and convective gusts, it led to a spike in high tides,which created coastal flooding in Palm Beach
and Flamingo during the local high tides. The National Park Service reported coastal flooding that
inundated the campgrounds,housing area, and maintenance areas around Flamingo. Eleven vehicles had
water intrusion, and one required a tow truck. Four trailer pads closest to the shoreline had the concession
resident trailers damaged, including one RV with heavy damage.
August 20,2024—Higher than normal water levels occurred in late August due to the full moon cycle, or
king tides, across the Gulf coast of South Florida. Minor coastal flooding was possible during high tide
with the peak height. An Everglades National Park ranger reported minor saltwater flooding in Flamingo,
on the flood-prone campground ad j acent to the water, during the high tide cycles. Standing water was less
than one foot on the road at the Flamingo Campground.
The Monroe County LMSWG also noted the importance of the following event:
November 11-12, 1980: The"Veteran's Day Storm"resulted from the influence of a stalled cold front
and Tropical Storm Jeanne that was over Cuba. In total,these combined systems produced 23 inches of
rain in 24 hours. Even though much of the water was running off into the surrounding seas,the event
resulted in widespread flooding especially in streets and low-lying areas. Weather Service reports
indicated that 300 vehicles and 500 buildings were seriously damaged, resulting in$1 million in property
damage,primarily in Key West.
By definition the SFHAs are defined as those areas that will be inundated by the flood event having a 1-
percent chance of being equaled or exceeded in any given year. Properties located in these areas have a
26 percent chance of flooding over the life of a 30-year mortgage. The shaded X Zone indicates areas that
are estimated to be inundated by the flood event having a 0.2-percent chance of being equaled or
exceeded in any given year. The SFHA and the Shaded X Zone indicate areas of high and moderate risk
according to FEMA guidelines; however,this does not mean that flood risk is limited to these areas.
There is also potential for other magnitudes of flood events to impact these and other areas in the region.
While exposure to flood hazards vary across jurisdictions, all jurisdictions have high risk flood hazard
areas, and the entire county faces some level of flood risk. Additionally,there is risk of localized and
stormwater flooding as well as severe wind-driven surge in areas outside the SFHA. Based on these
considerations as well as the 49 flood-related events recorded by NCEI over the last 24 years,the
probability of flooding is considered highly likely(100% annual probability) for all jurisdictions.
Probability: 4—Highly Likely
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The potential for flooding can change and increase. Various land use changes and changes to land surface
can result in changes to the floodplain and flood prone areas. For example, an increase in impervious
surface can create localized flooding problems inside and outside of natural floodplains by altering or
confining natural drainage channels. These changes are often created by human activity. However,
changes in precipitation frequency and intensity can also result in changes to flood magnitudes and
probabilities. For example,what we currently define as the 1-percent-annual-chance flood may occur
more frequently in the future.
Per the Fourth National Climate Assessment, frequency and intensity of heavy precipitation events is
expected to increase across the country. More specifically, it is"very likely"(90-100%probability)that
most areas of the United States will exhibit an increase of at least 5% in the maximum 5-day precipitation
by late 21 st century. Additionally, increases in precipitation totals are expected in the Southeast.
Climate change will increase people's exposure to coastal flooding and likely cause an increase in inland
flooding in the Monroe County region. Higher ocean temperatures will lead to more intense storms. As
temperatures increase so does evaporation,producing greater rainfall intensity. A warmer atmosphere can
hold more moisture,which can result in heavier, longer-lasting rainfall events. The increase in rainfall
means effects of a storm can be felt miles away and far inland. Additionally,the speed at which tropical
cyclones move, is expected to slow,meaning longer periods of storm-related rainfall will occur
potentially causing disastrous inland flooding.
As the intensity of coastal storms increase, coastal communities may experience higher levels of surge
and more intense impacts from flooding. Surge depths will be higher as sea levels rise, expanding the
boundary of coastal flood areas and impacting more communities along the coast.
S S S
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
E HODOLOGIES
AND ASSUMPTIONS
WSP conducted a Level 2 Hazus Flood Simulation by leveraging the 1%-annual-chance flood boundaries
from the effective FEMA Flood Insurance Study dated 02/18/2005. Base Flood Elevations were
converted to a depth raster using LiDAR topography obtained from USGS. WSP also leveraged the 2024
parcel data provided by Monroe County and building footprints for the loss determination. Parcels that
were potentially at risk of flooding from the 1%-annual-chance flood zone were selected for analysis.
Only areas that were contained within the extent of available LiDAR, and by extension the depth grid,
were analyzed. This accounted for 99.9% of all structures in the SFHA.
Losses were derived in Hazus using USAGE depth damage functions, shown in Table 4.23. Flood
damage is directly related to the depth of flooding by the application of a depth damage curve. In
applying the curve, a specific depth of water translates to a specific percentage of damage to the structure,
which translates to the same percentage of the structure's replacement value. Figure 4.11 depicts the
depth of flooding that can be expected within the Monroe County planning area during the 1%-annual-
chance flood event.
°° IIIIIII IIIIIII IIIIIII IIIIIII
������������1111���������������°�����
Percent Damaged(%)
Depth
( Agricultural Commercial Education Government Industrial Religious Residential
0 0 1 0 0 1 0 18
1 6 9 5 5 10 10 22
2 11 14 7 8 12 11 25
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Percent Damaged(%)
Depth
( Agricultural Commercial Education Government Industrial Religious Residential
3 15 16 9 13 15 11 28
4 19 18 9 14 19 12 30
5 25 20 10 14 22 12 31
6 30 23 11 15 26 13 40
7 35 26 13 17 30 14 43
8 41 30 15 19 35 14 43
9 46 34 17 22 29 15 45
10 51 38 20 26 42 17 46
11 57 42 24 31 48 19 47
12 63 47 28 37 50 24 47
13 70 51 33 44 51 30 49
14 75 55 39 51 53 38 50
15 79 58 45 59 54 45 50
16 82 61 52 65 55 52 50
17 84 64 59 70 55 58 51
18 87 67 64 74 56 64 51
19 89 69 69 79 56 69 52
20 90 71 74 83 57 74 52
21 92 74 79 87 57 78 53
22 93 76 84 91 57 82 53
23 95 78 89 95 58 85 54
24 96 80 94 98 58 88 54
Source:Hazus
Building foundation types were not available in the parcel or building data provided by Monroe County
but are required for Hazus. Therefore,based on local knowledge and experience,WSP made the
assumption that 40%of the foundations in Monroe County are elevated, 25% are crawl space, and 35%
are slab on grade.
Loss numbers are based on improved parcel values listed in the 2024 parcel data from Monroe County.
Parcels with values greater than or equal to $5,000 are considered improved parcels. Parcels with building
values less than$5,000 but with building footprint of single structure greater than 600sgft within
boundary are considered improved parcels. All parcels with building values less than$5,000 and no
building footprint or no single building footprint greater than 600sgft are considered unimproved parcels.
Content value estimations are based on Hazus methodologies of estimating value as a percent of
improved structure values by property type. Table 4.24 shows the breakdown of the different property
types and their estimated content replacement value percentages.
°°°°°° ������ IIIIIII °���n IIIIIII °t IIIIIII'����� Illlllf�llllllll . .IIIIIII°� IIIIIII°��°t IIIIIII'°°°°°° °t� IIIIIII°
Property Type Content Replacement Values
Residential 50%
Commercial 100%
Educational 100%
Government 100%
Religious 100%
Industrial/Agriculture 150%
Source: Hazus
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PEOPLE
Flood events pose many threats to public health and safety. While such problems are often not reported,
three general types of health hazards accompany floods: physical hazards from the water itself,
environmental hazards in the aftermath of the flood, and long-term psychological hazards. These common
health and safety hazards are detailed below:
— Contaminated water: Floodwaters carry anything that was on the ground that the upstream runoff
picked up, including dirt, oil, animal waste, and lawn, farm and industrial chemicals. Pastures and
areas where farm animals are kept or where their wastes are stored can contribute polluted waters to
the receiving streams. Floodwaters also saturate the ground, which leads to infiltration into sanitary
sewer lines, or wastewater treatment plants may be flooded or over loaded. When wastewater
treatment plants are flooded,there is nowhere for the sewage to flow. Infiltration and lack of
treatment can lead to overloaded sewer lines that can back up into low-lying areas and homes. Even
when it is diluted by flood waters,raw sewage can be a breeding ground for bacteria such as E.coli
and other disease causing agents. Private sewer and septic systems may also introduce pollutants into
floodwaters. Private wells may become contaminated through infiltration of polluted water. Given the
many potential sources of contamination, direct or indirect contact with floodwaters poses a
significant health risk for contraction of infectious disease.
— Debris: During a flood, debris carried by floodwaters can cause physical injury from impact. During
the recovery process,people may often need to clear debris out of their properties but may encounter
dangers such as sharp materials or rusty nails that pose a risk of tetanus.
— Unsafe food: If floodwaters come into contact with food items, that food may no longer be safe for
consumption due to the potential contaminants in the floodwaters. Foods stored in cardboard,plastic
bags,jars,bottles, and paper packaging may all be subject to contamination. Even if foods don't come
into direct contact with floodwaters,the introduction of mold and mildew from flooding may cause
foods to spoil faster. Additionally,power outages may cause refrigerated and frozen foods to spoil.
— Mosquitos and animals: After most of the water has receded, stagnant pools can become breeding
grounds for mosquitoes,which may carry infectious diseases such as West Nile virus or St. Louis
encephalitis. Wild animals such as snakes or rodents may carried by floodwaters or lose their habitat
and seek shelter in buildings. Snakes may also be swimming in floodwaters seeking higher ground.
People may be at risk for bites or disease if they come in contact with these animals or animal
carcasses.
— Mold and mildew: Areas of a building that were exposed to excessive moisture can breed mold and
mildew. Molds can start to grow in only 24 to 48 hours and will continue to grow without steps to
dry out and disinfect the affected surface. Some molds are allergens,while others can produce
harmful mycotoxins. Exposure to mold can cause respiratory problems; nasal and sinus congestion;
eye,nose, and throat irritation; aches and pains; and effects on the nervous system. Infants, children,
immunocompromised individuals, elderly adults,pregnant women, and individuals with respiratory
conditions are all at higher risk.
— Reentering a flooded building: Health hazards may occur when heating ducts in a forced air system
are not properly cleaned after inundation. When the furnace or air conditioner is turned on, the
sediments left in the ducts are circulated throughout the building and breathed in by the occupants. If
the public water systems lose pressure,public water supplies may be contaminated, and a boil order
may be issued to protect people and animals from contaminated water.
— Mental stress: Long-term psychological impacts can result after having been through a flood and
seeing one's home damaged and personal belongings destroyed. The cost and labor needed to repair
a flood-damaged home can also put a severe strain on people, especially individuals who were
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unprepared and uninsured. There is also a long-term problem for those who know that their homes
can be flooded again. The resulting stress on floodplain residents takes its toll in the form of
aggravated physical and mental health problems.
IIII IIII IIII IIII IIII IIII
Flood waters may prevent access to areas in need of response or to the critical facilities themselves which
may prolong response time. See the Property section below for estimates of critical facility vulnerability.
The public must understand that they should never drive through flooded streets. The Centers for Disease
Control and Prevention report that over half of flood-related drownings occur when a vehicle is driven
into flood water, and the next highest percentage of deaths is due to people walking into or near flood
waters. The National Weather Service warns that just 6 inches of fast-moving flood water can knock
down an adult, 12 inches can carry away a small car, and 2 feet can carry away most vehicles. When
someone drives through floodwaters,they put their life and the lives of first responders at risk. First
responders are at risk when attempting to rescue people from floodwaters. They are subject to the same
hazards as the public and are more likely to be exposed to these hazards during response efforts.
Floods can result in fatalities. Individuals face high risk when driving through flooded streets. According
to NCEI records,however,there have been no deaths in Monroe County caused by flood events.
An estimate of population at risk to flooding was developed based on the assessment of residential
property at risk. Counts of residential buildings at risk were multiplied by a household factor for each
jurisdiction, derived from a weighted average of the 2019-2023 American Community Survey's average
household size for owner- and renter-occupied housing. The resulting estimates of population at risk are
shown in Table 4.25. Overall, approximately 93,541 people live in high-risk flood zones.
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Jurisdiction Residential Buildings at Risk Household Factor Population at Risk
Islamorada 4,865 2.17 10,557.05
Key Colony Beach 1,409 1.75 2,465.75
Key West 6,666 2.21 14,731.86
Layton 143 2.29 327.47
Marathon 5,151 2.48 12,774.48
Unincorporated Monroe County 22,515 2.34 52,685.10
Total 40,749 -- 93,541.71
Source: FEMA 2005 Effective FIRM;U.S.Census Bureau 2023 ACS 5-Year Estimates;Monroe County 2024 parcel data
Note:The household factor used to approximate population at risk in unincorporated Monroe County is representative
of the entire County,not just the unincorporated areas.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PPOPERTY
Residential, commercial, and public buildings, as well as critical infrastructure such as transportation,
water, energy, and communication systems may be damaged or destroyed by flood waters.
Table 4.26 and Table 4.17 detail the estimated losses for the 1%-annual-chance flood event in Monroe
County, calculated using the methodology and assumptions described above. The total damage estimate
value is based on damages to the total of improved building value and contents value. Land value is not
included in any of the loss estimates as generally land is not subject to loss from floods. Detailed tables
by jurisdiction are located in individual jurisdictional annexes. Table 4.26 is based on the effective FIRM
and Table 4.27 is based on the Preliminary FIRM.
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Countywide Totals
Agriculture 1 $535,470 $1,175 $18,807 $19,982 4%
Commercial 3,863 $5,840,161,933 $147,082,563 $488,627,142 $635,709,705 11%
Educational 47 $58,906,690 $752,780 $4,791,921 $5,544,700 9%
Government 1,485 $1,443,150,783 $9,386,268 $57,115,154 $66,501,422 5%
Industrial 444 $376,694,386 $3,696,287 $10,985,325 $14,681,612 4%
Religious 103 $116,549,732 $570,756 $4,154,455 $4,725,211 4%
Residential 40,749 $27,885,853,843 $5,531,368,544 $2,748,219,679 $8,279,588,223 30%
Total 469692 $35972198529837 $5969298589373 $393131,9129484 $9,006,770,856 25%
Source:Hazus
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Countywide Totals
Agriculture 1 $535,470 $17,044 $58,053 $75,097 14%
Commercial 4,130 $6,141,640,392 $134,579,885 $446,321,840 $580,901,725 9%
Educational 59 $79,082,110 $864,647 $5,425,160 $6,289,807 8%
Government 1,489 $1,336,252,324 $6,834,422 $42,218,610 $49,053,032 4%
Industrial 447 $382,464,388 $4,089,129 $12,243,880 $16,333,009 4%
Religious 124 $135,199,326 $759,210 $5,886,824 $6,646,034 5%
Residential 41,455 $28,153,856,315 $5,376,628,663 $2,671,216,394 $8,047,845,056 29%
Total 479705 $369229,030,325 $59523,772,999 $391831,370,760 $80707,143,760 24%
Source:Hazus
The loss ratio is the loss estimate divided by the total potential exposure (i.e., total of improved and
contents value for all buildings located within the 100-year floodplain) and displayed as a percentage of
loss. FEMA considers loss ratios greater than 10%to be significant and an indicator a community may
have more difficulties recovering from a flood. Loss ratios for all participating jurisdictions are at or
above 10%. Therefore, in the event of a flood with a magnitude of the 1%-annual-chance event or greater,
the planning area would face extreme difficulty in recovery. Even smaller,more probabilistic floods may
also result in the county having difficulty recovering. Based on the results using the effective FIRM,
estimated loss ratios are greatest in Layton and the unincorporated areas of Monroe County; therefore,
these jurisdictions may face the greatest potential impacts from a flood event.
Across the planning area there are 388 critical facilities located in the AE zone and 19 facilities located in
the VE zone which may be at risk to more severe damages. There are 390 facilities located in the
preliminary FIRM's SFHA. Table 4.28 details these critical facilities at risk to flooding by FEMA lifeline
based on the effective FIRM and Table 4.29 details results for the preliminary FIRM. There are an
additional 19 facilities (effective FIRM)and 43 facilities (preliminary FIRM) in the 0.2%-annual-chance
floodplain(Shaded X).
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FEMA Lifeline Critical Facilities by SFHA Zone Total Facilities at
Zone AE Zone VE Risk
Communications 26 0 26
Energy 23 1 24
Food, Hydration,Shelter 40 2 42
Hazardous Materials 2 0 2
Health and Medical 21 0 21
Safety and Security 70 6 76
Transportation 4 1 5
Water Systems 202 9 211
Total 388 19 407
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FEMA Lifeline Critical Facilities by SFHA Zone Total Facilities at
Zone A Zone AE Zone AO Zone VE Risk
Communications 1 19 0 6 26
Energy 0 22 0 0 22
Food, Hydration,Shelter 0 31 1 3 35
Hazardous Materials 0 1 0 0 1
Health and Medical 0 19 0 0 19
Safety and Security 0 66 0 8 74
Transportation 0 3 1 1 5
Water Systems 0 189 0 19 208
Total 1 350 2 37 390
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A repetitive loss property is a property for which two or more flood insurance claims of more than$1,000
have been paid by the NFIP within any 10-year period since 1978. A severe repetitive loss property is
classified as such if it has four or more separate claim payments of more than$5,000 each(including
building and contents payments) or two or more separate claim payments (building only)where the total
of the payments exceeds the current value of the property. Repetitive loss properties and severe repetitive
loss properties are a priority for mitigation because they have a known flood risk and are a drain on the
NFIP.
According to 2024 NFIP records,there are a total of 1,210 repetitive loss properties within the Monroe
County planning area. of which 1,079 are residential and 131 are commercial or non-residential. Only 658
repetitive loss properties, less than 54% of the total in the region, are insured. There are 114 properties on
the list classified as severe repetitive loss properties.
Table 4.30 summarizes repetitive loss properties by jurisdiction in Monroe County as identified by FEMA
through the NFIP. Jurisdictional annexes have general areas where repetitive losses have occurred
throughout the community.
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RL Occupancy Type Total % SRL Count
Jurisdiction Property
Count
Residential Commercial Losses Insured Residential Commercial
Islamorada 56 33 23 182 57% 8 4
Key Colony Beach 26 21 5 91 42% 5 0
Key West 267 229 38 762 74% 29 5
Layton 2 2 0 5 0% 0 0
Marathon 175 157 18 483 56% 14 1
Unincorporated 5
684 637 47 1,673 47% 43
Monroe County
Total 19210 1,079 131 3,196 54% 99 15
Source:OpenFEMA Dataset:NFIP Multiple Loss Properties,2024,Accessed February 2025
RL=Repetitive Loss;SRL=Severe Repetitive Loss
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ENVIRONMENT
During a flood event, chemicals and other hazardous substances may end up contaminating local water
bodies. Flooding kills animals and in general disrupts the ecosystem. Snakes and insects may also make
their way to the flooded areas.
Floods can also cause significant erosion, which can alter streambanks and deposit sediment, changing the
flow of waterbodies and potentially reducing their drainage capacity.
Sea level rise can have numerous negative consequences on the environment including increased erosion
and associated impacts. Another concern is the inundation of normally dry land,which could lead to the
loss of marshes and wetlands and the positive benefits associated with those areas. These areas buffer
against waves and storm surge,protect from erosion and even encourage accretion, and provide natural
wildlife habitats. Sea level rise may also lead to saltwater intrusion as the groundwater table may also
rise,potentially leading to contaminated drinking and agriculture water.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONSEQUENCE ANALYSIS
Table 4.31 summarizes the potential detrimental consequences of flood.
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Category Consequences
Public Localized impacts could be severe. Flooding is likely to displace people from
their homes.Water can become polluted such that if consumed,diseases
and infection can be easi ly spread.
Responders First responders are at risk when attempting to rescue people from flooding.
They are subject to the same health hazards as the public. Flood waters
may prevent access to areas in need of response or the flood may prevent
access to the critical facilities themselves which may prolong response time.
Impacts to responders are expected to be limited.
Continuity of Floods can severely disrupt normal operations,especially when there is a loss
Operations(including of power. Damage to facilities in flooded areas may require temporary
relocation of some operations. Localized disruption of roads,facilities,and/or
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Category Consequences
Continued Delivery of utilities caused by incident may postpone delivery of some services. Sea level
Services) rise may also interrupt continuity of operations,such as delivery of services,
by causing mor regular chronic flooding.
Property, Facilities and Buildings and infrastructure, including transportation and utility
Infrastructure infrastructure, may be damaged or destroyed by flooding. Impacts are
expected to be localized to the area of the incident.Severe damage is
possible.
Environment Chemicals and other hazardous substances may contaminate local water
bodies.Wildlife and livestock deaths possible.The localized impact is
expected to be severe for incident areas and moderate to light for other
areas affected by the flood or HazMat spills.
Economic Condition of Local economy and finances will be adversely affected, possibly for an
the Jurisdiction extended period. During floods(especially flash floods), roads, bridges,farms,
houses and automobiles are destroyed.Additionally,the local government
must deploy firemen, police and other emergency response personnel and
equipment to help the affected area. It may take years for the affected
communities to be re-built and business to return to normal.
Public Confidence in Ability to respond and recover may be questioned and challenged if
the Jurisdiction's planning, response,and recovery are not timely and effective.
Governance
Natural hazards are often interconnected. Any given hazard may lead to, or be spurred by, another hazard
—sometimes referred to as cascading disasters. A flood event may be associated with coastal erosion,
tropical storms and hurricanes, storm surge, sea level rise, and severe storms and tornadoes.
New development or redevelopment, if it occurs in or near the SFHA or localized flooding areas, could
increase exposure of people and property to flood impacts.
Additionally, increased development anywhere in the County can create changes in the watershed by
increasing impervious surfaces; such development will alter flood patterns as well as intensity of flooding
events. This is especially true of increased development within or near identified floodplains. Though the
County's Rate of Growth Ordinance determines the speed at which undeveloped parcels may be
developed there is still potential for increased impervious surfaces on previously developed parcels.
Islamorada, Layton and other locations that are fully built out will not face the same risks as the potential
for new development and impervious surface coverage is limited.
All incorporated jurisdictions have at least 89 percent of their total land area in the Special Hazard Flood
area. Riverine floods could likely significantly impact these jurisdictions. It is important to consider how
the recently released preliminary floodplain maps will impact flood insurance once effective.
All jurisdictions in the County have a flood loss-ratio of greater than 10%;the loss ratio is higher in
unincorporated Monroe (30%)than Countywide (25%).
Per the Hazus analysis, 100 percent of developed parcels in the AE and VE zones are at risk to flooding
(Key Colony Beach and Layton);Marathon(99.9%) and Islamorada(90.5%)have larger portions of
parcels at risk than the County average(89.2%). Mitigation strategies should prioritize these properties.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
As a community with a large seasonal population,the County and incorporated jurisdictions should
consider whether shelters have adequate capacity for this influx of people, often during hurricane season.
Less than 50%of repetitive loss buildings in Key Colony Beach(42%), Layton(0%), and unincorporated
Monroe (47%) are insured. These buildings should be prioritized for elevation or acquisition.
Localized and stormwater flooding blocking roadways (particularly U.S. Highway 1) may impede
evacuation capabilities.
Of the 430 critical facilities reported in this plan, 90 percent are within the effective SFHA; 86.2 percent
in the AE zone and 4.4 percent in the VE zone. The communities must identify mitigation strategies that
protect these facilities,which might include elevation of critical systems, elevation of the building,
floodproofing, or relocation, among others.
The following table summarizes flood hazard risk by jurisdiction. Flood risk due to high tide flooding,
flash flooding, and stormwater flooding exists across the entire county. All participating jurisdictions
have over 89 percent of their area in the SFHA and thus have a high degree of exposure to flooding; given
that other sources of flooding and other levels of flooding may occur beyond these areas,the spatial
extent was considered large for all jurisdictions. Impact ratings were based upon Hazus loss estimates as
well as the overall risk of death or injury; all jurisdictions have loss ratios over 10. All communities also
face a uniform probability of flooding.
Spatial Warning
Jurisdiction Probability Impact Extent Time Duration Score Priority
Key Colony Beach 4 3 4 3 3 3.5 H
Key West 4 3 4 3 3 3.5 H
Layton 4 3 4 3 3 3.5 H
Marathon 4 3 4 3 3 3.5 H
Islamorada 4 3 4 3 3 3.5 H
Unincorporated 4 3 4 3 3 3.5 H
Monroe County
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
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14".5 5 SEA LEVEL RISE
Hazard Probability Impact Spatial Warning Time Duration PRE
Extent Score
Sea Level Rise Highly Likely Critical Large More than 24 hrs More than 1 week
Sea level rise is the increase in sea levels as a result of atmospheric and oceanic warming which causes
water expansion as well as ice melt from ice sheets and glaciers. Sea level rise is a result of global climate
change. Climate change may be due to natural internal processes or external forces such as modulations
of the solar cycles,volcanic eruptions, and persistent anthropogenic changes in the composition of the
atmosphere or in land use(IPCC, 2023). Climate change is a natural occurrence in which the earth has
warmed and cooled periodically over geologic time. The recent and rapid warming of the earth over the
past century has been cause for concern as it is very likely due to the accumulation of human-caused
greenhouse gases, such as CO2, in the atmosphere (IPCC, 2023). This warming is occurring almost
everywhere in the world which suggests a global cause rather than changes in localized weather patterns.
In 2023,the Intergovernmental Panel on Climate Change(IPCC) reported with high confidence that
warming due to such emissions will cause long-term changes in the climate system such as sea level rise.
There are generally two separate mechanics involved in global sea level rise. The first is directly
attributed to global temperature increases,which warm the oceans waters and cause them to expand. The
second is attributed to the melting of ice over land which simply adds water to the oceans. Global sea
level rise is likely caused by a combination of these two mechanics and can be exacerbated on the local
level by factors such as erosion and subsidence. The rate of sea level rise has varied throughout geologic
history, and studies have shown that global temperature and sea level are strongly correlated.
Due to sea-level rise projected throughout the 21 st century and beyond, coastal systems and low-lying
areas will increasingly experience adverse impacts such as submergence, coastal flooding, and coastal
erosion. The population and assets projected to be exposed to coastal risks as well as human pressures on
coastal ecosystems will increase significantly in the coming decades due to population growth, economic
development, and urbanization(IPCC, 2023). Monroe County is particularly vulnerable to the effects of
sea level rise, due to its coastal location, subtropical environment, low topography and tourism economy.
Warning Time: 1 —More than 24 hours
Duration: 4—More than one week
Sea level rise can occur anywhere along the coast in Monroe County. The Coastal Vulnerability Index
(CVI), developed by United States Geological Survey(USGS),provides a preliminary overview of the
relative susceptibility of the United States coast to sea level rise. The CVI is based on geomorphology,
regional coastal slope, tide range,wave height,relative sea level rise, and shoreline erosion and
acceleration rates. For each study area, each variable is scored on a 1-5 scale based on defined parameters,
where "1"indicates low contribution to coastal vulnerability and"5"indicates high contribution to
vulnerability. These scores are then aggregated into a single index through a mathematical formula. The
resulting index gives an overview of where physical changes may occur due to sea-level rise. Figure 4.12
shows the CVI for Monroe County. Most of the Florida Keys have a CVI rating of high, except Big Torch
Key and Howe Key, which are rated moderate. The mainland coastline is also rated moderate.
Spatial Extent: 4—Large
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Sea level rise is measured by the number of feet of relative rise and the areas that such rise would
inundate. The NOAA Sea Level Rise Viewer provides a tool to examine potential sea level rise (SLR)
scenarios which represent possible future sea level changes. This allows users to examine the feet of
relative sea level rise for a given year and SLR scenario (low, intermediate,high,etc.). These scenarios
were developed and used as inputs into the U.S. Global Change Research Program's Sustained
Assessment process and the Fifth National Climate Assessment.
The estimated impacts of 2040 projected sea level rise (SLR) for the intermediate-low scenario and the
intermediate—high scenario are shown in Figure 4.13 and Figure 4.14,respectively. Both scenarios were
also used in the Monroe County Vulnerability Assessment to evaluate risks and vulnerabilities of the
County's infrastructure. The sea level rise estimate maps show inundation above mean higher high water
(the average of each day's higher high tide line). Maps of sea level rise impacts by jurisdiction are
available in individual jurisdictional annexes.
As shown in the figures below,under the 2040 intermediate-low scenario the majority of the Keys is
estimated to be inundated, and an even larger extent is impacted in the intermediate-high scenario. Sea
level rise will likely affect coastal marsh lands as well as land along rivers, canals, and their tributaries.
Additionally, sea level rise will likely increase future risk of flooding from the other flood hazards
discussed in this plan, as more land will have a lower elevation relative to sea level. For example,with
much of the barrier islands and wetlands inundated, inland areas will lose their natural protection and may
become susceptible to coastal flooding with velocity wave action.
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Sea level rise is a slow onset hazard, and because the full extent of anticipated sea level rise has not yet
been realized,the effects of sea level rise have not yet been fully felt. However, sea level rise has already
begun to cause"clear sky"or"nuisance" flooding,which is brought on by high tidewaters rather than
storm or rain events. Tidal flooding causes temporary inundation of low-lying areas during high-tide
events. The 2022 NOAA Sea Level Rise Technical Report finds that the national rate of high-tide
flooding has more than doubled since 2000 due to sea level rise.NOAA projects that by 2050 high tide
flooding events will occur 45 to 70 days a year,triple the current rate. While sea level rise increases the
frequency of these events, it also is expected to increase the depth and extent of tidal flooding. Figure
4.15 shows areas in Monroe County that are susceptible to high tide flooding as defined by NOAA based
on derived national flood thresholds from NOAA Technical Report NOS CO-OPS 086: Patterns and
Projections of High Tide Flooding along the U.S. Coastline Using a Common Impact Threshold.
Impact: 3—Critical
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Historic trends in local MSL are best determined from tide gauge records. The Center for Operational
Oceanographic Products and Services (CO-OPS)has been measuring sea level for over 150 years,with
tide stations operating on all U.S. coasts. Changes in Mean Sea Level (MSL), either a sea level rise or sea
level fall, have been computed at 142 long-term water level stations using a minimum span of 30 years of
observations at each location. These measurements have been averaged by month to remove the effect of
higher frequency phenomena(e.g. storm surge) in order to compute an accurate linear sea level trend.
Figure 4.16 illustrates regional trends in sea level from NOAA. At the Key West, FL station(indicated by
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
the green arrow in western Monroe County),the relative sea level trend is 2.64 mm/year with a 95%
confidence interval of+/- 0.15 mm/year based on monthly mean sea level data from 1913 to 2024 which
is equivalent to a change of 0.87 feet in 100 years. At the Vaca Key station(indicated by the yellow arrow
in the Middle Keys),the relative sea level trend is 4.23 mm/year with a 95%confidence interval of+/-0.4
mm/year based on data from 1971 to 2024;this is equivalent to a change of 1.39 feet in 100 years.
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The map above,iffostratas reiative,sealevel trenck t with arrows reprasanting the direction and r 7agnftude ofchanga. fro orm arm arrow to oco ss ad ifr naNnfarmatiG13 about that station.
Relative a Level TrenAs
mmr/'r(f t/1centur-
Vim. a l,l to
Source: http://tidesandcurrents.noaa.gov/sltrends/sltrends.shtml
Figure 4.17 and Figure 4.18 show the monthly mean sea level at NOAA's Key West and Vaca Key
Florida stations without the regular seasonal fluctuations due to coastal ocean temperatures, salinities,
winds, atmospheric pressures, and ocean currents. The long-term linear trend is also shown,including its
95%confidence interval. The plotted values are relative to the most recent Mean Sea Level datum
established by CO-OPS.
Ilr t: ..
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
IIIIIII""""""IIIIIII "" ""IIIIIII"7 III 111 SeaIIIIIII......... IIIIIII""""IIIIIII""""IIIIIII'""' 11111 Wes"''IIIIIII'°°°°°°IIIIIII
"®
0.60
Linear Relative Sea Legal Trend
w�
—Upper 95%Confidence Interval
0.45
Lower %Confidence Interval
Monthly mean sea legal with the
average seasonal cycle removed ........ ....:::. ......... .. ...... ....:::. ........ ...:::. ........
0.15
.
00
.30 - - - -� ._� .-� �_� ._� ._� �_ - - - - - - - - - - - - - - - - - - - - - - - - - - - _ _� ._� ._� ._� ._� �_� ._� ._� .
.4 _ ._ ._ ._ ._ ._ ._ w_ _ _ _ _ _ _ _ _ _ _ _ _ w_
Source:NOAA Tides and Currents,February 2025
IIIIIII""""""IIIIIII I u""IIIIIII IIIII III °° IIIIIII .IIIIIII""""IIIIIII""""IIIIIII'""' .IIIIIIIVaca 11114°(. IIIIIII°°°°°°IIIIIII
,,Florida .
0.60
Linear Relative Sea Legal Trend FV±
—Upper 95%Confidence interval
Monthly mean sea legal with the
average seasonal cycle removed ........ ....:::. ......... .. ...... ....:::. ........ ...:::. ........
0.15
1
d .. .. q .. .. :.,q .. .. ,u .. .. ,:.b .. .. .. .. .. .. y .. .. .u.. .. .. ,g .. .. .. .. 4
Source:NOAA Tides and Currents,February 2025
The data above relies on a linear trend over more than a decade. As such,the trend misses subtle
variations and especially larger increases as climate change and CO2 levels have increased in recent years.
Per the Southeast Florida Regional Climate Change Compact's Unified Sea Level Rise Projection 2019
Update,this linear trend estimates approximately 2 inches of sea level rise at the Key West, FL tide gauge
from 2000 through 2019. However,using 5-year averages of mean sea level,this estimate is closer to 3.9
inches of sea level rise from 2000 to 2017. This 5-year average of monthly mean sea level illustrates the
variability of sea level and highlights the increase in sea level above the linear trend, especially in the last
decade. Figure 4.19 from the Unified Projection document illustrates these variations by displaying
monthly mean sea level, 5-year averages of mean sea level, and the linear mean sea level trend.
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uumum IIIIIII IIIIII °°°°.uu.119 Sea uuumu ml� IIIIIII IIIIIII I"I,,, V� west,Illlllluuuuuu Illlllluuuum
110
�mmm
9
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2000-20 7: 3.9"
il Sao-�
0
9 22000, .2
u mm
;1-i n ea r(Mein S ea I-evel i
15
Year
Source:Unified Sea Level Rise Projection(2019 Update),South Florida Regional Climate Change Compact
As noted previously, climate change and sea level rise can have varying impacts, including more frequent
coastal flood days. Climate Central's Surging Seas Risk Finder notes that coastal floods are increasing.
Figure 4.20 shows coastal flooding in the Key West Area(based on the Key West water level station)
from 1955 through 2014 in 10-year increments. According to this data, from 1995 through 2004,the Key
West area experienced 8 coastal flood days—seven of which were driven by climate-linked sea level rise.
In the following 10 years, from 2005 through 2014,the number of coastal flood days increased to 32, a
300 percent increase. 30 of these coastal flood days can be attributed to climate-linked sea level rise.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
IIIIIIP'e 4��,.210 Coas�td�III ����)ays, West,
KEY"WEST`AFZ,,,E,A,*
IIIIIII
Coast a," I fl��ood da, ysi,
EM D �w �c rri at:e��'n ked se a 1 P,i o I r,i,_
Wol�,,.,0,d �,r,iiave oc,uirrred ar�,,,Yvq'ay,
30h-
25,
21 '0�_,
5
01-J �1 MEER== EMERIMM
195564 1965-74 1985-94 1995-2004 20015-141,
Source:Climate Central Surging Seas Risk Finder(https://riskfinder.climatecentral.org/)
In line with increased coastal flood days,the region is also seeing increasing intensity and duration of
King Tides. King tides are predictable phenomenon that generally occur each fall when the alignment of
the moon, sun, and Earth create a stronger gravitational pull on the ocean. Like many other coastal events,
climate change has made King Tide flooding worse. In the Fall of 2019,the Upper Florida Keys
experienced nearly three months of King Tide flooding,particularly in the Blackwaters Sound area. That
year, Hurricane Dorian and other tropical storms in late August and early September interrupted the Gulf
Stream, causing water to back up. Tides recorded along the Atlantic coast from the Carolinas to Florida
were 6 to 18 inches higher than expected. Residents noted that in these low-lying areas with nowhere for
water to drain,these events generally lasted seven to ten days in the past. In 2024,the peak king tide
occurred during the super full moon in mid-October,which was the closest the moon came to the Earth
during the whole year.
The Earth's changing climate will continue to drive nonlinear trends in Sea Level that deviate from
historic trends. This is especially pertinent in the coastal communities of South Florida on the frontlines
of climate change and sea level rise and is the reason behind the South Florida Regional Climate Change
Compact's Unified Sea Level Rise Projection. This document was created in unify the diversity of local
Sea Level Rise projections in order to create a single, unified projection to ensure consistency in
adaptation planning,policy, and infrastructure and siting design in the South Florida region. The first
unified projection was developed and released in 2011,updated in 2015, and most recently updated in
2019. Each update has incorporated new research and data. The 2019 update incorporated the potential
�A('Irvrc)e courity,
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C:.)Eige 13
SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
for faster rates of melting of the Antarctic Ice Sheet as well as regional sea level rise rates as reported in
the Fourth National Climate Assessment. It should be noted that in December of 2024,the South Florida
Regional Climate Change Compact's Unified Sea Level Rise Projection issued a statement of continued
use of the 2019 version as a full 5-year update and revision was not deemed necessary.
The 2019 update begins in the year 2000, as this is the reference year for the most recently published
NOAA projections, and uses two planning horizons: 20 years for land use (2040) and 50 years for
infrastructure(2070). The projection used the Key West gauge as the reference gauge to maintain
consistency with prior projections.
The compact used three curves to guide various development across different time frames in the region.
Importantly,the projections are regional rather than previously used global projections. The projections
are as follows:
— Short term: by 2040, sea level in the region is projected to rise 10 to 17 inches above 2000 mean sea
level.
— Medium term: by 2070, sea level in the region is projected to rise 21 to 54 inches above 2000 mean
sea level.
— Long term: by 2120, sea level in the region is projected to rise 40 to 136 inches above 2000 mean sea
level.
These projections are based on three global curves adapted for regional application: the median of the
IPCC AR5 RCP 8.5 scenario as the lowest boundary, the NOAA Intermediate High Curve as the upper
boundary for short term use (until 2070) and the NOAA High Curve as the upper boundary for medium
and long-term use. Figure 4.21 below shows these projections. The IPCC Median Curve and the NOAA
Intermediate High curve form the lower and upper bounds,respectively, for short-term use (through
2070). The IPCC median curve represents the most likely average sea level before 2070; sea level is rise
is unlikely to exceed the NOAA Intermediate High curve by 2100. The NOAA High curve forms the
upper bound for medium- and long-term use. Sea level rise is very unlikely to be higher than this curve
before 2100.
Probability: 4—Highly Likely
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°BOG� rruualurcl lumsuylmvmo,0iuinllrll�NaillnmiMriMMn�i� mdIX "I�reMl lb`� I �9
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Yea ir
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I pf,i -NOAA i�r"l R � � m o� i i I
Source:Southeast Florida Regional Climate Change Compact,Unified Sea Level Rise Projection (2019)
The intended use of the Unified Projection is for planning purposes. The projections are to be used by a
variety of audiences,including elected officials,urban planners, engineers, and developers, among others,
across short-and long-term planning horizons for new projects or adaptation of existing projects,
including infrastructure siting and design. The projection is an important complement to a vulnerability
assessment in order to inform the user of the potential magnitude and extent of sea level rise now and into
the future using various scenarios with associated timelines. In making infrastructure siting decisions,
users must consider the nature,value, interconnectedness, and lifespan of existing and proposed
infrastructure. The following summarizes the Unified Projection's recommendations for application of the
three curves:
IPCC Median Curve: The lower bound of the projection; can be applied to most infrastructure projects
before 2070 or whose failure would result in limited consequence to others.
NOAA Intermediate High Curve: Consider designing to this curve for projects in need of a greater
factor of safety; this includes projects with a design life beyond 50 years.
NOAA High Curve: Existing and proposed critical infrastructure should be elevated using this curve;
projects that are not easily replaceable,have a long design life, and are interdependent with other
infrastructure or services are included in this application.
As noted in the 2024 Statement of Continued Use of the 2019 Southeast Florida Regionally Unified Sea
Level Rise Projection, the Compact reviewed updates from the NOAA 2022 Sea Level Rise Technical
Report as well as observational trends of sea level in the region. In the NOAA 2022 Report,it was shown
that the projections for the year 2100 for each global scenario stayed the same as previous predictions.
However,the timing of the rates of rise in the near-term for the different scenarios was updated based on
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
new modeling and scientific methods. Figure 4.22 shows the comparison of selected NOAA 2017
scenario to the corresponding NOAA 2022 scenarios. This graph shows that while NOAA 2022 scenarios
are slightly lower than NOAA 2017 scenarios,both scenarios still reach the same global mean sea level
by 2100.
uuuuu°°� imn o � m i � muw, a ������ mii uuuo"�' mry umo � "� ������� mww���°0� pim u w um ii a ��I����� m um
IIIIIII IIIIIII ������� uull,.2 ull iluuum���������������� IIIIIII IIIIIII IIIIIII IIIIIII IIIIIII III �������III uuu uuuum V """'IIIIIII mu IIIIIII umllu. u. �m IIIIIII IIIIIII uuu IIIIIII IIIIIII IIIIIII IIIIIII IIIIIII IIIIIII �������III IIIIIII ulll iluuum ��I�I�I 2 IIIIIII
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2022 Hig
' I
"
or 00
1011
10
00,
2
I
2010,0 202 a 12060 210
*I r
Source:Southeast Florida Regional Climate Change Compact,Unified Sea Level Rise Projection 2024 Statement
Sea level rise is a direct result of global climate change. Estimates for sea level rise are based on
projected greenhouse gas emission levels and their associated impacts on global temperature change.
Most sea level rise models do not fully account for ice melt, and therefore actual sea level rise may be
significantly higher than current estimates suggest. As such,these projections contain substantial
variability but are nonetheless important to consider when planning for coastal areas because they indicate
where flooding can be expected should actual sea level rise meet estimated levels.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
XIIETHODOLOGIES AND ASSUMPIONS
Vulnerability to sea level rise was assessed based on past occurrences nationally and internationally as
well as data from NOAA,USGS, the Intergovernmental Panel on Climate Change (IPCC), and other
sources.
In addition to the data presented below,the County's Watershed management plan and the Region's
Climate Change Compact provide additional information about risks in the region. The draft of the
Florida Keys Coastal Storm Risk Management Feasibility Study done by the United States Army Corps
1II IIIr()e Courity, ........ ..::I
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of Engineers for Monroe County provides additional insights into the impacts to people,the built
environment, and the natural environment due not only to sea level rise,but associated hazards likely to
become more intense, such as coastal storms, storm surge, and erosion, due to climate change and the
ensuing sea level rise.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PEOPLE
Sea level rise will lead to increased flooding and the associated harms to humans, such as illness, or injury
or death from driving into flooded waters and drowning. Potential damage to property such as homes,
business, and vehicles can also causes emotional and financial stress as people determine how to mange
encroaching water.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PROPEPTY
The increased number of flood days and general encroachment of shoreline associated with sea level rise
will likely cause property damage, although it is unclear exactly what this will look like. Homes,
businesses and vehicles will be susceptible to increased water damage. Homes within the areas that may
be inundated will potentially be uninhabitable. Additionally,rising seas, and associated increased flood
days, can overwhelm and undermine the effectiveness of stormwater drainage system and other
infrastructure, such as roads and bridges. Table 4.32 estimates the number of parcels at risk to the 2040
intermediate—low and intermediate—high SLR scenarios. In total, an estimated 30,336 buildings would
be impacted by the 2040 intermediate high SLR scenario. of these structures 89 percent are residential.
°°° Illlllh IIIIIII ������� °°°° ������� a Illilll IIIIIIId hillAffected Sea ..........ev6IIIII������� Illilll III �°t
Estimated Estimated
Occupancy Structure Value Total Value
Building Count Content Value
2040 Intermediate-Low 22,563 $9,5031,0759174 $5,592,8099716 $15,095,884,891
Agriculture 1 $267,735 $267,735 $535,470
Commercial 1,700 $1,328,393,069 $1,328,393,069 $2,656,786,138
Education 22 $6,536,769 $6,536,769 $13,073,538
Government 399 $226,726,898 $226,726,898 $453,453,797
Industrial 115 $46,696,545 $70,044,817 $116,741,362
Religious 45 $27,226,697 $27,226,697 $54,453,395
Residential 20,281 $7,867,227,461 $3,933,613,730 $11,800,841,191
2040 Intermediate-High 7,773 $3,387,255,039 $2,014,72%447 $5,401,9751486
Agriculture 0 $0 $0 $0
Commercial 590 $455,680,278 $455,680,278 $911,360,555
Education 9 $5,565,652 $5,565,652 $11,131,304
Government 296 $127,746,163 $127,746,163 $255,492,326
Industrial 59 $22,613,793 $33,920,689 $56,534,482
Religious 16 $7,966,178 $7,966,178 $15,932,356
Residential 6,803 $2,767,682,976 $1,383,841,488 $4,151,524,464
Total 30,336 $121890,330,213 $7,607,530,164 $20,497,8601377
Sea level rise can also create added pressure on the aquifers that serve Monroe County. The Biscayne
Aquifer, which provides most of the drinking water for Monroe County is currently experiencing
saltwater intrusion. Saltwater intrusion is a product of many factors—including increased usage of the
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water from the aquifer,which is particularly impacted by the growth of Miami-Dade County,where the
aquifer is located, as well as Monroe County as well as seepage from the Turkey Point cooling canals. Sea
level rise can further exacerbate this pattern. Further saltwater intrusion into the aquifer will impact the
entire Monroe County population as it relies on drinking water from this source.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Sea level rise can have numerous negative consequences on the environment including increased erosion
and all impacts associated with that. Another concern is the inundation of normally dry land,which could
lead to the loss of marshes and wetlands and the positive benefits associated with those areas. These areas
buffer against waves and storm surge,protect from erosion and even encourage accretion, and provide
natural wildlife habitats. Finally, sea level rise may lead to saltwater intrusion as the groundwater table
may also rise,potentially leading to contaminated drinking and agriculture water.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONSEQUENCE ANALYSIS
Table 4.33 summarizes the potential negative consequences of sea level rise.
SeaIIIIIII..........ev6IIIII Category Consequences
Sea Level Rise may cause increased flooding which may lead to illness,
Public injury,or death.Additionally,sea level rise may cause psychological stress
from loss of home,economy,and culture.
Responders
Sea Level Rise induced flooding may cause increased burden on
responders.
Continuity of Operations As sea levels rise and cause more regular,chronic flooding,continuity of
(including Continued operations,such as delivery of services may be interrupted due to
Delivery of Services) localized disruption of roads,facilities,and/or utilities.
Sea level rise can cause damage to property as flooding becomes more
Property, Facilities and regular in the short term and as sea levels continue to rise in the long
Infrastructure term.SLR can also compromise infrastructure such as drainage systems
and roads.
Environment Sea level rise can lead to increased erosion,salt water intrusion,and
inundation of wetlands and previous dry land.
Economic Condition of Sea level rise can severely disrupt the economy, particularly in a region
the Jurisdiction that relies so heavily on tourism.
Public Confidence in the
Sea level rise is unlikely to impact public confidence.
Jurisdiction's Governance
Natural hazards are often interconnected. Any given hazard may lead to, or be spurred by, another hazard
—sometimes referred to as cascading disasters. Sea level rise may be associated with tropical cyclones,
storm surge, flood, and coastal erosion.
New development at a local scale will not necessarily impact the rate of sea level rise. Increased
development in potentially inundated areas,however,will increase vulnerability. Future development
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plans guiding future development must consider sea level rise and areas of the county that will be
inundated by sea level rise.
Residential property is most likely to be affected by sea level rise,which has implications on a local
economy—both permanent and season residential units may no longer be livable. Education and outreach
programs could increase residential and property owner buy-in on and implementation of mitigation
options on an individual property scale.
Various reports on sea level rise in the region exist—mitigation strategies should consider all reports;
specifically detailing critical facilities at risk to sea level rise using a standard prediction would clarify
mitigation strategies chosen to respond to this hazard.
Key West,Marathon, Layton, and Unincorporated Monroe County will have the most parcels impacted
by 2 feet of sea level rise.
The following table summarizes sea level rise risk by jurisdiction. The coastal, low-lying geography of
the region mean all jurisdictions face at least some risk from sea level rise. Impacts vary based on the
number of parcels at risk to sea level rise -more developed jurisdictions are likely to see larger impacts.
Spatial extent was varied by jurisdiction depending on the area exposed to sea level rise impacts.
Jurisdiction Probability Impact Spatial WarningDuration Score Priority
Extent Time
Key Colony
3 2 2 1 4 2.4 M
Beach
Key West 3 3 4 1 4 3.1 H
Layton 3 3 3 1 4 2.9 M
Marathon 3 3 4 1 4 3.1 H
Islamorada 3 2 3 1 4 2.6 M
Unincorporated 3 3 4 1 4 3.1 H
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
,14 SEVERE STORMS
Hazard Probability Impact Spatial Warning Time Duration PRI
Extent Score
Severe Storms Highly Likely Limited Large Less than 6 hrs Less than 6 hrs 2.6
(Thunderstorms)
Severe Storms
(Lighting &Hail)
Highly Likely Minor Negligible Less than 6 hrs Less than 6 hrs 22
Tornadoes Likely Limited Small Less than 6 hrs Less than 6 hrs 24
� Iwo
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
S
Thunderstorms result from the rapid upward movement of warm, moist air. They can occur inside warm,
moist air masses and at fronts. As the warm,moist air moves upward, it cools, condenses, and forms
cumulonimbus clouds that can reach heights of greater than 35,000 ft. As the rising air reaches its dew
point, water droplets and ice form and begin falling the long distance through the clouds towards earth's
surface. As the droplets fall, they collide with other droplets and become larger. The falling droplets
create a downdraft of air that spreads out at earth's surface and causes strong winds associated with
thunderstorms.
There are four ways in which thunderstorms can organize: single cell, multi-cell cluster,multi-cell lines
(squall lines), and supercells. Even though supercell thunderstorms are most frequently associated with
severe weather phenomena,thunderstorms most frequently organize into clusters or lines. Warm,humid
conditions are favorable for the development of thunderstorms. The average single cell thunderstorm is
approximately 15 miles in diameter and lasts less than 30 minutes at a single location. However,
thunderstorms, especially when organized into clusters or lines, can travel intact for distances exceeding
600 miles.
Thunderstorms are responsible for the development and formation of many severe weather phenomena,
posing great hazards to the population and landscape. Damage that results from thunderstorms is mainly
inflicted by downburst Winds, large hailstones, and flash flooding caused by heavy precipitation.
Stronger thunderstorms can produce tornadoes and waterspouts. While conditions for thunderstorm
conditions may be anticipated within a few hours, severe conditions are difficult to predict. Regardless of
severity, storms generally pass within a few hours.
Warning Time: 4—Less than six hours
Duration: I —Less than six hours
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
LIGHTNING
Lightning is a sudden electrical discharge released from the atmosphere that follows a course from cloud
to ground, cloud to cloud, or cloud to surrounding air,with light illuminating its path. Lightning's
unpredictable nature causes it to be one of the most feared weather elements.
All thunderstorms produce lightning,which often strikes outside of the area where it is raining and is
known to fall more than 10 miles away from the rainfall area. When lightning strikes, electricity shoots
through the air and causes vibrations creating the sound of thunder. A bolt of lightning can reach
temperatures approaching 50,000 degrees Fahrenheit. Nationwide, lightning kills 75 to 100 people each
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year. Lightning strikes can also start building fires and wildland fires, and damage electrical systems and
equipment.
The watch/warning time for a given storm is usually a few hours. There is no warning time for any given
lightning strike. Lightning strikes are instantaneous. Storms that cause lightning usually pass within a
few hours.
Warning Time: 4—Less than six hours
Duration: I —less than six hours
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
HAI
L
According to the National Oceanic and Atmospheric Administration(NOAA),hail is precipitation that is
formed when updrafts in thunderstorms carry raindrops upward into extremely cold areas of the
atmosphere causing them to freeze. The raindrops form into small frozen droplets and then continue to
grow as they encounter super-cooled water which will freeze on contact with the frozen rain droplet. This
frozen rain droplet can continue to grow and form hail. If the updraft forces can support or suspend the
weight of the hailstone,hail can continue to grow.
At the time when the updraft can no longer support the hailstone, it will fall to the earth. For example, a
1/4" diameter or pea sized hail requires updrafts of 24 mph,while a 2 3/4"diameter or baseball sized hail
requires an updraft of 81 mph. The largest hailstone recorded in the United States was found in Vivian,
South Dakota on July 23, 2010; it measured eight inches in diameter, almost the size of a soccer ball.
While soccer-ball-sized hail is the exception,but even small pea sized hail can do damage.
Hailstorms in Florida cause damage to property, crops, and the environment, and kill and injure livestock.
In the United States,hail causes more than$1 billion in damage to property and crops each year. Much of
the damage inflicted by hail is to crops. Even relatively small hail can shred plants to ribbons in a matter
of minutes. Vehicles,roofs of buildings and homes, and landscaping are the other things most commonly
damaged by hail. Hail has been known to cause injury to humans; occasionally,these injuries can be fatal.
The onset of thunderstorms with hail is generally rapid. However, advancements in meteorological
forecasting allow for some warning. Storms usually pass in a few hours.
Warning Time: 4—Less than 6 hours
Duration: I —Less than 6 hours
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
According to the Glossary of Meteorology(AMS 2000), a tornado is "a violently rotating column of air,
pendant from a cumuliform cloud or underneath a cumuliform cloud, and often(but not always)visible as
a funnel cloud." Tornadoes can appear from any direction. Most move from southwest to northeast, or
west to east. Some tornadoes have changed direction amid path, or even backtracked.
Tornadoes are commonly produced by land falling tropical cyclones. Those making landfall along the
Gulf coast traditionally produce more tornadoes than those making landfall along the Atlantic coast.
Tornadoes that form within hurricanes are more common in the right front quadrant with respect to the
forward direction but can occur in other areas as well. According to the NOAA,more than half of the
landfalling hurricanes will spawn at least one tornado. Tornadoes are more likely to be spawned within 24
hours of landfall and are usually within 30 miles of the tropical cyclone's center.
Tornadoes have the potential to produce winds in excess of 200 mph(EF5 on the Enhanced Fujita Scale)
and can be very expansive—some in the Great Plains have exceeded two miles in width. Tornadoes
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
associated with tropical cyclones, however,tend to be of lower intensity(EFO to EF2) and much smaller
in size than ones that form in the Great Plains.
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Winds iloss than, 1,10 mph Winds 111-16,65 mph Winft grestor than 166 irnph
r ,, o /, EFO or EF1 damage Producos EF 2 or E y ProducesEF'4 or EFS damage
Source: NOAA National Weather Service
Warning Time: 4—Less than six hours
Duration: I —Less than six hours
According to the NOAA Storm Prediction Center(SPC), the United States experiences an average of
1,248 tornadoes per year with the highest concentration of tornadoes occurring in the region surrounding
Oklahoma, Texas, and Kansas. Although the Great Plains region of the Central United States does favor
the development of the largest and most dangerous tornadoes(earning the designation of"tornado alley"),
the southeast experiences tornado threats throughout the cooler months of the year before they move to
the central plains during May and June. The below figure shows tornado activity in the United States
based on the number of recorded tornadoes per 10,000 square miles.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
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Waterspouts can form when a tornado moves from land to water. Joseph Golden,the distinguished
waterspout authority with NOAA, defines a waterspout as a"funnel which contains an intense vortex,
sometimes destructive, of small horizontal extent and which occurs over a body of water."In other words,
a waterspout is a column of rotating, cloud-filled wind. There are two types of waterspouts. A tornadic
waterspout generally begins as a true tornado over land in association with a thunderstorm and then
moves out over water. They are influenced by winds associated with severe thunderstorms as air rises and
rotates on a vertical axis.Fair weather waterspouts, on the other hand, are associated with developing
storms systems,but not storms themselves. These types of waterspouts only form over open water,where
they develop at the water's surface and climb skyward. Both types of waterspouts require high levels of
humidity and relatively warm water temperatures compared to overlying air. The fair-weather variety is
more common than the tornadic type.
There are five stages of waterspout formation:
Dark Spot: The water's surface takes on a prominent circular, light-colored disk surrounded by a larger
dark area of indeterminate shape with diffused edges where the vortex reaches it.
Spiral Pattern: A pattern of light and dark colored surface bands spiral out from the dark spot.
Spray Ring: A swirling ray of dense sea spray,known as a cascade, forms around the dark spot with
what appears to be an eye similar to that seen in hurricanes.
Mature Vortex: This is the waterspouts most intense stage. It is now visible from the water surface to an
overhead cloud mass as it achieves maximum organization and intensity. The funnel often appears
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy J a iii`.m U a iii. .: .6
SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
hollow,with a surrounding shell of turbulent condensate. The spray vortex can rise to a height of several
hundred feet or more, often creating a visible wake and an associated wave train as it moves.
Decay: The funnel and spray vortex begin to dissipate as the inflow of warm are into the vortex weakens.
Systems that might produce waterspouts are outline in the National Weather Service's nearshore marine
forecast and hazardous weather outlook, and this information is shared 12 to 24 hours prior to waterspout
occurrences.NWS will issue a special marine warning when waterspouts are detected by doppler radar or
trained spotters.
Warning Time: 3— 6 to 12 hours
Duration: I —Less than 6 hours
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
HUNDERSTOPINI WINDS
Thunderstorm wind, lightning, and hail events do not have a defined vulnerability zone. The scope of
wind, lightning and hail is generally defined to the footprint of its associated thunderstorm. Given the
general size and movement of thunderstorm events, thunderstorm winds from one event may impact a
large portion of the planning area. The entirety of Monroe County and its jurisdictions share equal risk to
the threat of severe weather.
Spatial Extent: 3—Moderate
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Tornados can occur anywhere in the County. Tornadoes typically impact a small area,but damage may be
extensive. Tornado locations are completely random,meaning risk to tornado isn't increased in one area
of the county versus another. Monroe County and its jurisdictions are uniformly exposed to tornadoes.
Waterspouts are most common in tropical and subtropical waters such as the Florida Keys, Greek Islands,
or off the coast of Australia. Waterspouts can occur in any of the water bodies in Monroe County.
Spatial Extent: 2—Small
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
LIGHTNING AND HAIL
The scope of lightning and hail is generally defined to the footprint of its associated thunderstorm.
However, large-scale hail tends to occur in a more localized area within the storm, and lightning strikes
and associated damages are highly localized and occur randomly. It should be noted that while lightning
is most often affiliated with severe thunderstorms, it may also strike outside of heavy rain and might
occur as far as 10 miles away from any rainfall. The entirety of Monroe County and its jurisdictions are
uniformly exposed to each of these hazards.
According to the Vaisala Interactive Global Lightning Density Map, shown in Figure 4.26,the majority
of Florida experiences 32-641ightning events per square kilometer per year. The Florida Keys do
experience slightly less lightning on average at 16-32 events per square kilometers per year.
Spatial Extent(Lightning): 1 —Negligible
Figure 4.26-Total Lightning Density in the U.S.(2016-2023)
t
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a
�j/y, j Total Lightning Density 2vcn[s,lknr,iYed
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/ 1 F 2 ti 8 IL 16 32 64 96
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Source:Vaisala Interactive Global Lightning Density Map
EXTENT
THUNDERSTORM WINDS
The magnitude of a thunderstorm event can be defined by the storm's maximum wind speed and its
impacts.NCEI divides wind events into several types including High Wind, Strong Wind, Thunderstorm
Wind, Tornado and Hurricane. For this severe weather risk assessment, High Wind, Strong Wind and
Thunderstorm Wind data was collected. Hurricane Wind and Tornadoes are addressed as individual
hazards. The following definitions come from the NCEI Storm Data Preparation document.
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 126
SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
— High Wind—Sustained non-convective winds of 40mph or greater lasting for one hour or longer or
winds (sustained or gusts) of 58 mph for any duration on a widespread or localized basis.
— Strong Wind—Non-convective winds gusting less than 58 mph, or sustained winds less than 40
mph,resulting in a fatality, injury, or damage.
— Thunderstorm Wind—Winds, arising from convection(occurring within 30 minutes of lightning
being observed or detected),with speeds of at least 58 mph, or winds of any speed(non-severe
thunderstorm winds below 58 mph)producing a fatality, injury or damage.
The Beaufort Wind Force Scale shown in Table 4.34 is an empirical measure that relates wind speed to
observed conditions at sea or on land. In the United States,winds of force 6 to 7 are designated as
"strong;" 8 to 9 "gale force;" 10 to 11 "usually results in a storm warning or tropical storm warning; and
force 12 results in a hurricane warning.
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Rating (MPH) Name Appearance of Wind Effects
On Water On Land
0 <1 Calm Sea surface smooth and mirror- Calm,smoke rises vertically
like
1 1-3 Light Air Scaly ripples, no foam crests Smoke drift indicates wind
direction,still wind vanes
2 4-7 Light Small wavelets,crests glassy, no Wind felt on face, leaves rustle,
Breeze breaking vanes begin to move
3 8-12 Gentle Large wavelets,crests begin to Leaves and small twigs constantly
Breeze break,scattered whitecaps moving, light flags extended
4 13-18 Moderate Small waves 1-4 ft, becoming Dust, leaves,and loose paper lifted,
Breeze longer, numerous whitecaps small tree branches move
5 19-24 Fresh Moderate waves 4-8 ft taking Small trees in leaf begin to sway
Breeze longer to form, many whitecaps,
some spray
6 25-31 Strong Larger waves 8-13 ft,whitecaps Larger tree branches moving,
Breeze common, more spray whistling in wires
7 32-38 Near Gale Sea heaps up,waves 13-19 ft, Whole trees moving,resistance felt
white foam streaks of breakers walking against wind
8 39-46 Gale Moderately high (18-25 ft)waves Twigs breaking off trees,generally
of greater length,edges of crests impedes progress
begin to break into spindrift,
foam blown in streaks
9 47-54 Strong High waves(23-32 ft),sea begins Slight structural damage occurs,
Gale to roll,dense streaks of foam, slate blows off roofs
spray may reduce visibility
10 55-63 Storm Very high waves(29-41 ft)with Seldom experienced on land,trees
overhanging crests,sea white broken or uprooted,"considerable
with densely blown foam, heavy structural damage"
rolling, lowered visibility
11 64-72 Violent Exceptionally high (37-52 ft) Very rarely experienced;
Storm waves,foam patches cover sea, widespread damage
visibility more reduced
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Rating (MPH) Name Appearance of Wind Effects
On Water On Land
12 73+ Hurricane Air filled with foam,waves over Devastation
45 ft,sea completely white with
driving spray,visibility greatly
reduced
Source:NOAA Storm Prediction Center
The strongest recorded thunderstorm wind event in the county occurred on February 2, 1998 when a C-
MAN instrument recorded a peak wind speed of 119 mph at Long Key. Elsewhere in the County,winds
ranged from 46 mph to 96 mph. The event caused one fatality when a man was crushed between a boat
and a dock,but no injuries or damages.
Impact: 2—Limited
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
T �'J%
Lightning is measured by the Lightning Activity Level (LAL) scale, created by the NWS to define
lightning activity into a specific categorical scale. The LAL is a common parameter that is part of fire
weather forecasts nationwide. The scale is shown in Table 4.35.
Illlllh°°IIIIIII 35 ......... IIII
IIIIII °�°�IIIIIIIIIIIIII IIIIIII t�lllllll IIIIIII°t� IIIIIII���������������� IIIIIII
Lightning Activity Level Scale
LAL 1 No thunderstorms
LAL 2 Isolated thunderstorms. Light rain will occasionally reach the ground. Lightning is very
infrequent,1 to 5 cloud to ground lightning strikes in a five-minute period
LAL 3 Widely scattered thunderstorms. Light to moderate rain will reach the ground. Lightning
is infrequent,6 to 10 cloud to ground strikes in a five-minute period
LAL 4 Scattered thunderstorms. Moderate rain is commonly produced. Lightning is frequent,11
to 15 cloud to ground strikes in a five-minute period
LAL 5 Numerous thunderstorms. Rainfall is moderate to heavy. Lightning is frequent and
intense,greater than 15 cloud to ground strikes in a five-minute period
LAL 6 Dry lightning (same as LAL 3 but without rain). This type of lightning has the potential for
extreme fire activity and is normally highlighted in fire weather forecasts with a Red Flag
warning
Source: National Weather Service
With the right conditions in place,the entire county is susceptible to each lightning activity level as
defined by the LAL. Most lightning strikes cause limited damage to specific structures in a limited area,
and cause very few injuries or fatalities, and minimal disruption on quality of life.
Impact: I —Minor
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
HAIL
The NWS classifies hail by diameter size, and corresponding everyday objects to help relay scope and
severity to the population. Table 4.36 indicates the hailstone measurements utilized by the NWS.
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IIC:)I g,m"II28
SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
°°° IIIIIII IIIIIII 4, °II;IIIII 1111114 IIIIIII t IIIIII III (IIIIIII °t IIIIIII Illlllh
����„I �
Average Diameter Corresponding Household Object
.25 inch Pea
.5 inch Marble/Mothball
.75 inch Dime/Penny
.875 inch Nickel
1.0 inch Quarter
1.5 inch Ping-pong ball
1.75 inch Golf ball
2.0 inch Hen egg
2.5 inch Tennis ball
2.75 inch Baseball
3.00 inch Teacup
4.00 inch Grapefruit
4.5 inch Softball
Source: National Weather Service
The Tornado and Storm Research Organization(TORRO)has further described hail sizes by their typical
damage impacts. Table 4.37 describes typical intensity and damage impacts of the various sizes of hail.
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Intensity Diameter Diameter Size
Category (mm) (inches) Description
Typical Damage Impacts
g ry p
Hard Hail 5-9 0.2-0.4 Pea No damage
Potentially 10-15 0.4-0.6 Mothball Slight general damage to plants,crops
Damaging
Significant 16-20 0.6-0.8 Marble,grape Significant damage to fruit,crops,vegetation
Severe 21-30 0.8-1.2 Walnut Severe damage to fruit and crops,damage to
glass and plastic structures, paint and wood
scored
Severe 31-40 1.2-1.6 Pigeon's egg > Widespread glass damage,vehicle bodywork
squash ball damage
Destructive 41-50 1.6-2.0 Golf ball > Wholesale destruction of glass,damage to tiled
Pullet's egg roofs,significant risk of injuries
Destructive 51-60 2.0-2.4 Hen's egg Bodywork of grounded aircraft dented, brick walls
pitted
Destructive 61-75 2.4-3.0 Tennis ball > Severe roof damage, risk of serious injuries
cricket ball
Destructive 76-90 3.0-3.5 Large orange Severe damage to aircraft bodywork
>softball
Super 91-100 3.6-3.9 Grapefruit Extensive structural damage. Risk of severe or
Hailstorms even fatal injuries to persons caught in the open
Super >100 4.0+ Melon Extensive structural damage. Risk of severe or
Hailstorms even fatal injuries to persons caught in the open
Source:Tornado and Storm Research Organization(TORRO),Department of Geography,Oxford Brookes University
Notes:In addition to hail diameter,factors including number and density of hailstones,hail fall speed and surface wind
speeds affect severity.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
The average hailstone size recorded between 2000 and 2024 in Monroe County was a little over 1"in
diameter; the largest hailstone recorded was 1.75",recorded on April 27, 2003. The largest hailstone ever
recorded in the U.S. fell in Vivian, SD on June 23,2010,with a diameter of 8 inches and a circumference
of 18.62 inches.
Impact: I —Minor
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Prior to February 1, 2007, tornado intensity was measured by the Fuj ita(F) scale. This scale was revised
and is now the Enhanced Fuj ita(EF) scale. Both scales are sets of wind estimates(not measurements)
based on damage. The new scale provides more damage indicators (28) and associated degrees of
damage, allowing for more detailed analysis,better correlation between damage and wind speed. It is also
more precise because it takes into account the materials affected and the construction of structures
damaged by a tornado. Table 4.38 shows the wind speeds associated with the enhanced Fujita scale
ratings and damage that could result at different levels of intensity.
°°° Illlllh lllllll °°"° IIIIIII IIIIIII IIIIIII IIIIIII � IIIIIII °t IIIIIII
EF 3 Second
Number Gust(mph)
Damage
0 65-85 Light damage. Peels surface off some roofs;some damage to gutters or
siding; branches broken off trees;shallow-rooted trees pushed over.
1 96-110 Moderate damage. Roofs severely stripped; mobile homes overturned or
badly damaged; loss of exterior doors;windows and other glass broken.
Considerable damage. Roofs torn off well-constructed houses;foundations
2 111-135 of frame homes shifted; mobile homes completely destroyed; large trees
snapped or uprooted; light-object missiles generated;cars lifted off ground.
Severe damage. Entire stories of well-constructed houses destroyed;severe
3 136-165 damage to large buildings such as shopping malls;trains overturned;trees
debarked; heavy cars lifted off the ground and thrown;structures with weak
foundations blown away some distance.
4 166-200 Devastating damage. Well-constructed houses and whole frame houses
completely leveled;cars thrown and small missiles generated.
Incredible damage. Strong frame houses leveled off foundations and swept
s Over 200
away;automobile-sized missiles fly through the air in excess of 100 m; high-
rise buildings have significant structural deformation; incredible phenomena
will occur.
The most intense tornado to pass through Monroe County in the period for which NCEI has recorded
events was and F2 tornado on November 4, 1998. NCEI reports this storm caused$25,000,000 in
damages,but no deaths or injuries. The tornado damaged over 600 structures,tore down utility lines,
damaged vessels, and destroyed foliage.
Impact: 3—Critical
Illf IllkIllf IIII0 U
Waterspouts are generally not a threat to any development on land, as they mostly stay over water.
Boaters and people participating in marine activities are advised to stay a considerable distance away
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
from any observed waterspout. There is no scale comparable to the Fuj ita scale to measure the strength of
a waterspout, however they generally are not expected to cause injury, death, or damage to residents or
property in Monroe County.
Waterspouts might be measured by their radius or wind speeds. An average waterspout is around 165 feet
in diameter with wind speed around 50 mph, corresponding with an EFO tornado, and last on average 5 to
10 minutes. Larger waterspouts might have a maximum 330-foot diameter and can last as long as one
hour.
An October 2011 waterspout caused$10,000 in damages when it moved through the anchorage at Key
West Harbor and damaged a vessel's cabin and hull after driving it ashore.
Impact: I —Minor
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
HUNDERSTORM WINDS
Between January 1, 2000 and November 30,2024,the NCEI recorded 53 separate incidents of
thunderstorm winds, occurring on 38 separate days. These events caused$147,650 in recorded property
damage,but no crop damages, fatalities, injuries were reported. The recorded gusts averaged 51.8 miles
per hour, with the highest gusts recorded at 92.1 mph, recorded on November 25, 2009. Of these events,
27 caused property damage. Wind gusts with property damage recorded averaged$6,415 in damage,with
one gust causing a reported$60,000 in damage(in Marathon on August 9,2006). These incidents are
aggregated by the date the events occurred and are recorded in Table 4.38 below:
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Wind Speed Property
Location Date (mph) Fatalities Injuries Damage
Key Largo 8/15/2000 58 0 0 $0
Marathon 8/26/2000 63 0 0 $0
Marathon 7/21/2001 -- 0 0 $0
Islamorada 7/22/2001 -- 0 0 $0
Islamorada 7/29/2001 58 0 0 $0
Plantation Key, 9/29/2001* 58 0 0 $0
Islamorada,
Stock Island,
Big Pine Key
Ocean Reef 1/2/2002 64 0 0 $0
Key West 9/11/2002 58 0 0 $500
Key West NAS 12/9/2002 63 0 0 $5,000
Cud joe Key 5/20/2003 58 0 0 $500
Key West, Key 5/5/2005* 58 0 0 $500
West I nt'I
Airport
Marathon 6/2/2005 69 0 0 $60,000
Cud joe Key 4/11/2007* 62 0 0 $500
Key Largo, 6/13/2007* 64 0 0 $8,500
Ocea n Reef
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Wind Speed Property
Location Date (mph) Fatalities Injuries Damage
Sugarloaf Key, 11/30/2008* 64 0 0 $0
Key West Int'I
Airport
Key Colony 2/2/2009* 70 0 0 $1,500
Beach,
Marathon
Big Coppitt 6/11/2009 51 0 0 $700
Island
Stock Is 8/5/2009 45 0 0 $500
Marathon 11/25/2009* 92 0 0 $50,000
Long Key 2/12/2010 58 0 0 $0
Upper Key 4/26/2010 60 0 0 $1,700
Largo
Grassy Key 12/18/2010 52 0 0 $1,000
Marathon, 1/17/2011* 52 0 0 $2,500
Stock Island,
Key West Int'I
Airport
Tavernier 3/28/2011 63 0 0 $10,000
Key West NAS 8/24/2011 49 0 0 $500
Cudjoe Key 10/3/2011 49 0 0 $250
Tavernier 10/8/2011 60 0 0 $0
Key West Int'I 6/10/2015 59 0 0 $0
Airport
Pirates Cove 7/21/2020 50 0 0 $0
Grassy Key 8/19/2020 52 0 0 $0
Key West Int'I 8/21/2020 52 0 0 $0
Airport
Key Largo PT 4/11/2021 43 0 0 $500
A R PT
Key West Int'I 8/28/2021 56 0 0 $0
Airport
Rock Harbor 6/22/2023 48 0 0 $2,000
Key West I nt'I 9/24/2023 51 0 0 $0
Airport
Ocean Reef 11/16/2023 57 0 0 $0
Monroe 12116/2023 35 0 0 $500
County/Upper
Keys
Monroe 12/16/2023 40 0 0 $500
County/Upper
Keys
Tavernier 7/21/2024 74 0 0 $0
Total O O $147,650
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Source:NCEI;Note:*Multiple events occurred on these dates.Injury,fatality,and damage stats are totaled;wind speed
is highest reported.
In addition to recorded thunderstorm wind events,NCEI reports 3 high wind events during this same
period. One such event, on August 1,2001, caused one fatality. A separate event, on January 11, 2012,
caused$2,000 in property damage.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
According to NCEI data,there were 12 lightning strikes reported between 2000 and 2024. Of these, 6
recorded property damage totaling$73,000. The highest rate of property damage recorded for a single
incident was $40,000. Four events caused a total of four injuries and no fatalities were reported. Event
narratives indicate in some cases that property damage occurred but was not estimated; therefore, actual
property damage amounts are higher.No crop damage was recorded by these strikes. It should be noted
that lightning events recorded by the NCEI are only those that are reported; it is certain that additional
lightning incidents have occurred in Monroe County. Table 4.40 details NCEI-recorded lightning strikes
from 2000 through 2024.
°°° Illlllh lllllll IIIIIIIZeco�III t° Illllll.........i IIIIIII °t lllllll°°°Illilll lllligt lllllll llillll llllll4 IIIIIII IIIIIII III II��,t �
Location Date Time Fatalities Injuries Property Damage
Key West 7/26/2000 16:50 0 1 $0
Duck Key 8/15/2000 9:57 0 0 $0
Marathon 9/10/2000 7:05 0 0 $0
Islamorada 8/14/2001 17:00 0 1 $0
Tavernier 10/1/2007 7:00 0 0 $20,000
Key West I nt'I Airport 7/25/2009 15:45 0 1 $0
Big Pine 6/9/2010 19:24 0 0 $1,000
Key West I nt'I Airport 7/22/2012 8:20 0 0 $40,000
Key Colony Beach 6/12/2013 19:30 0 0 $2,500
Stock Is 6/26/2013 9:20 0 1 $0
Ramrod Key 11/2/2018 21:11 0 0 $7,500
Key West Nas 7/19/2023 6:00 0 0 $2,000
Total 0 4 $732000
Source: NCEI
The following are a selection of narrative descriptions recorded in NCEI for lightning events that
occurred in Monroe County:
July 26,2000—Lightning struck a boat just west of Key West. Five people were knocked out of the boat
with one person injured with burns.
August 14,2001—Female injured by lightning during thunderstorm. She was touching the stainless steel
counter of the restaurant she worked at when she was struck.
October 1,2007— Strong thunderstorms over the Upper Keys produced heavy rainfall and a damaging
lightning strike. The lightning struck the cupola of an unoccupied large oceanfront home in Plantation
Key. The strike caused a small fire and damaged plumbing within the roof structure of the home.
July 25,2009—A strong thunderstorm centered approximately 8 miles northwest of Key West produced
a cloud-to-ground lightning strike. The lightning struck a palm tree near the entrance to White Street Pier
�A('Irvrc)e County,
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in Key West. The bolt passed from the tree to a 19-year-old male. The strike survivor remained conscious
and was treated at Lower Key Medical Center for minor injuries.
July 22,2012—A positive-polarity lightning strike struck a residence in Key West within stratiform
rainfall behind a northwest-moving squall line. The residence, a duplex,was severely damaged. The
lightning struck the ground near the exterior j acuzzi in a side yard,near the front corner of the structure,
leaving a hole in the ground roughly 2 feet by 2 feet and 18 inches deep. A ground rod and wire was
installed for the Jacuzzi but not attached. The charge followed the exterior power conduit to an exterior
junction box, where the box's cover was blown free. Wires were charred,the conduit destroyed. The
residence's washer/dryer electric supply was charred. The electric meter box exploded with wires charred
and burned and all connections melted. In the front of the residence,wood was charred under metal
screws securing the exterior soffit. Aluminum window frames in the front of the residence were melted
with windows knocked out. Light bulbs in various locations throughout the residence were blown,
including the bedroom lamps and ceiling fixture,bathroom wall fixture, and kitchen ceiling light fixture.
The bathroom mirror was shattered. The residence was declared unfit for occupation due to damage to
the electrical system, although no fire resulted. Keys Energy Services replaced a blown fuse for a
transformer serving the residence, and three other residences had tripped circuits but no permanent
damage was reported. The struck residence was occupied by one female at the time of the strike,who
was observed by rescue personnel to not have any injuries.
November 2,2018—An isolated thunderstorm near the lower Florida Keys produced a damaging
lightning strike to a residence on Barbados Lane on Ramrod Key. The strike resulted in roof and electrical
system damage. A neighboring residence also experienced electrical system damage.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
HAI
L
NCEI records 7 separate hail incidents across 3 days between January 1, 2000 and December 31, 2024 in
Monroe County. Of these, one event resulted in$250 in property damage, and no events resulted in death,
injury or crop damage. The largest diameter hail recorded in the County was 1.75 inches,which occurred
on April 27, 2003 in Key West. This was the largest hail ever reported since record began in 1871. The
event was only the 11 th time hail of any size had been recorded in Key West. The average hail size of all
events in the County was just under over one inch in diameter. Table 4.41 shows the summary of hail
occurrences.
°°° Illlllh IIIIIII "'IIIIIII IIIIIII IIIIIII t Illlllh°°°° Illilll IIIIIII IIIIIIIIIIIIII°m ll IIIIIII° Illlllh IIIIIII.......... °tl'l1l IIIIIII
���� IIIIIII ����
Location Number of Occurrences Average Hail Diameter
Key Largo 1 0.75"
Key West I nt'I Airport 5 1.2"
Pi necrest 1 0.88"
Total 7 1.09"
Source:NCEI
Note:All 5 events at the Key West Int'I Airport occurred on the same day.
The following narratives provide detail on select hailstorms from the above list of NCEI recorded events
highlight how intertwined thunderstorm and hail events are:
April 27,2003—A severe thunderstorm developed and moved southeast over Key West. Small hail of
1/2-inch or smaller began 15:02 EST over Old Town Key West and spread throughout the remainder of
Key West, Stock Island, and Boca Chica Key through 15:27 EST. Golf ball-sized hail reported over
central Key West on Flagler Avenue was the largest hail ever reported since records began in 1871 and
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tied the largest hail size ever reported in Monroe County,Florida. This event was the 11 th time hail of
any size was recorded in the city of Key West since 1871.
June 13,2007—A severe thunderstorm moved south out of Miami-Dade County on the mainland,
crossed the east end of Florida Bay, and produced sporadic wind damage throughout North Key Largo,
Key Largo and Rock Harbor. A landscaper reported 3/4 inch hail in Rock Harbor.
June 15,2013—A surface frontal boundary moved into South Florida during the afternoon and generated
numerous to widespread severe thunderstorms during the afternoon and early evening some with very
large hail. Hail up to the size of baseballs and slightly larger was reported from two separate
thunderstorms and this is only the sixth time since 1950 that baseball sized hail or larger has been
reported anywhere in South Florida. A spotter reported nickel sized hail at the Loop Road Education
Center.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ORNADOES
NCEI storm reports were reviewed from 2000 through 2024 to assess whether recent trends varied from
the longer historical record.According to NCEI, Monroe County experienced 32 tornado incidents
between 2000 and 2024, causing over$5.3 million in property damage but no injuries, fatalities, or crop
damage. $5 million in damages came from one F2 event in Marathon on August 26, 2005. However,this
damage estimate may be under reported, as damage was reported in the narratives of many events but was
not recorded in terms of a monetary value. Table 4.42 shows historical tornadoes in Monroe County
during this time.
°°° Illlllh IIIIIII IIIIIII IIIIIII IIIIIII IIIIII IIIIIII III °t , 4
Deaths/ Property Crop
Location Date Time Magnitude
Injuries Damage Damage
Big Pine Key 7/1/2000 1820 FO 0/0 $15,000 $0
Big Pine Key 8/18/2000 1450 FO 0/0 $0 $0
Key West 10/1/2003 1605 FO 0/0 $0 $0
Marathon 6/22/2005 1550 FO 0/0 $5,000 $0
Marathon 8/26/2005 345 F2 0/0 $5,000,000 $0
Sugarloaf Key 6/1/2007 1155 EFO 0/0 $20,000 $0
Marathon 6/24/2007 1258 EFO 0/0 $2,500 $0
Marathon 2/13/2008 1332 EFO 0/0 $2,000 $0
Big Coppitt Is 8/18/2008 1155 EFO 0/0 $1,000 $0
Summerland Key 8/18/2008 1300 EFO 0/0 $1,000 $0
Upper Key Largo 9/9/2008 1250 EFO 0/0 $25,000 $0
Craig Key 9/10/2008 242 EF1 0/0 $120,000 $0
Sugarloaf Key 9/17/2008 1140 EFO 0/0 $0 $0
Stock Island 9/29/2008 1500 EFO 0/0 $0 $0
Key West Int'I 12/18/2009 1435 EFO 0/0 $10,000 $0
Arpt
Key Largo Pt Arpt 12118/2009 1755 EFO 0/0 $5,000 $0
Key Largo Pt Arpt 4/26/2010 1145 EFO 0/0 $15,000 $0
Key Largo Pt Arpt 8/30/2010 1810 EFO 0/0 $500 $0
Big Pine 4/5/2013 110 EFO 0/0 $30,000 $0
Key Colony 1/8/2016 630 EFO 0/0 $2,000 $0
Beach
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Location Date Time Magnitude Deaths/ Property Crop
Injuries Damage Damage
Key West Int'I 8/11/2017 1603 EFO 0/0 $0 $0
Arpt
Tavernier 4/15/2018 1912 EF1 0/0 $4,000 $0
Tavernier 4/15/2018 1912 EFO 0/0 $200 $0
Summerland Key 8/4/2019 1820 EFO 0/0 $0 $0
Highland PT 1/31/2020 2235 EFU 0/0 $0 $0
Rock Harbor 5/9/2022 1505 EFO 0/0 $0 $0
Pi necrest 9/27/2022 1610 EFU 0/0 $0 $0
Key West Int'I 8/16/2023 855 EFO 0/0 $0 $0
Arprt
Big Coppit Island 11/15/2023 627 EFO 0/0 $1,500 $0
Summerland Key 2/18/2024 1302 EFO 0/0 $75,000 $0
Big Coppit Island 3/19/2024 301 EFO 0/0 $2,000 $0
Key West Int'I 10/8/2024 2237 EF1 0/0 $0 $0
Arprt
Total 0/0 $5,3369700.00 $0
Source: NCEI
Narratives from NCEI illustrate that many of these events spawned from waterspouts. Specific incidents
with some level of impact include:
July 1,2000—A waterspout moved onshore along the south end of Big Pine Key. The event resulted in
damage to a bed and breakfast inn.
August 26,2005—Tornado damage path began at the oceanfront at 73rd Street Ocean(F 1)in Marathon
and moved northeast, crossing U.S. Highway 1 near 76th Street Ocean,passing through Marathon Airport
before entering Florida Bay near the Sea Air Estates Subdivision. The most significant damage(F2)
included concrete block residential structure shifted on foundation, A-frame residence shifted on pilings,
and bent large steel I-Beams on recently constructed hangars at Marathon Airport. One boat sunk in canal.
Extensive damage to porches and trees along narrow path. Damage from this tornado totaled$5 million.
September 9 & 10,2008—Hurricane Ike moved west to west-northwest across eastern Cuba,just
offshore the south-central coast, and then crossed through western Cuba into the Gulf of Mexico.
Tropical storm force winds and two tornadoes were reported in the Florida Keys. Damage from these
tornadoes totaled$145,000.
The first tornado touched down on the Atlantic side of U.S. Highway One and moved toward the
northwest. The tornado caused minor damage to facia on a business on the bayside of U.S. Highway One,
then moved into a residential area. One residence had two broken windows and another residence had an
exterior wall penetrated with a 2x4 carried from a home under construction over 250 yards. Several trees
and large limbs downed. Estimated maximum wind speed 60 to 70 mph.
The second tornado occurred when a violent waterspout associated with a supercell made landfall in
Lower Matecumbe Key at Sunset Drive and moved northwest,crossing U.S. Highway One and then
along Palm Drive through a residential section near Mile Marker 74 on the Overseas Highway. The
tornado damage path ended on Buttonwood Lane before reaching Florida Bay. Most damage was to deck
railings, screens,windows and soffits on numerous homes. A few homes displayed more significant
damage, including penetration through exterior doors and walls,with one home losing 50 percent of its
roof decking. The EF 1 rating with estimated maximum wind speeds of 90 to 100 mph was based on roof
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damage to a residence along Palm Drive. Debris from sheet metal paneling and mangrove branches may
have contributed to a major power outage throughout all of the Keys from Islamorada through Key West
as it was carried across U.S. Highway One and a major electrical transmission line.
December 18,2009—A supercell thunderstorm tracked northeast along the Florida Keys. The
thunderstorm first produced a weak tornado at the extreme southeast tip of Key West and south Stock
Island,then tracked northeast just north of Big Pine Key before crossing the Upper Florida Keys from the
west-southwest at Key Largo. A second weak tornado was reported at several Florida Bay shoreline
properties.
A weak tornado produced EFO damage across the extreme southeast part of Key West through south
Stock Island. The tornado was first observed by a motorist just offshore South Roosevelt Boulevard
before moving briefly onshore at a hotel. Over a half dozen palm trees with some decay were snapped at
the base. Lawn furniture was blown southeast in the tornado's wake. The tornado tracked northeast
across Cow Key Channel before moving ashore again on south Stock Island along 12th Avenue. Two
trees were downed, and a deck umbrella was lofted northeast from the east end of 11 th Avenue onto
power lines on 5th Street,bringing down the lines and causing a power outage throughout the area. The
tornado continued northeast and likely lifted or dissipated over 5th Avenue northeast of Bernstein Park
where a small ornamental tree was found snapped at the base and several trashcans had fallen and rolled
to the south or southeast. At the tornado's northeast terminus, a television cable line was downed.
Maximum winds were estimated at 60 to 70 mph along the path from Key West through 11 th Avenue in
Stock Island.
The same supercell also caused a short-lived weak tornado near Mile Marker 104 of the Overseas
Highway. The tornado produced minor damage with some outdoor furniture destroyed and ornamental
palm trees downed in a parking lot at a Florida Bay-side business, and porch screens blown out at a
restaurant next door. Maximum winds estimated at 65 mph.
April 26,2010—A waterspout accompanying a line of severe thunderstorms moved onshore the Florida
Bay side of Key Largo at the Marriott Florida Bay Resort. A tree was blown down blocking part of U.S.
Highway 1 in front of the hotel. An outdoor day spa consisting of a thatched roof and bamboo shutters
and interior mirrors was destroyed. Weighted deck loungers were blown across the pool deck and
significant landscaping damage occurred on the waterfront side of the hotel. The tornado quickly
dissipated over U.S. Highway 1. Estimated maximum winds were near 70 mph.
April 5,2013—A complex surface low pressure system supported by a sharp upper trough of low
pressure extending southward into the Gulf of Mexico produced strong thunderstorms in the Florida
Straits. One thunderstorm produced a waterspout which moved ashore along the oceanside of Long Beach
Drive and passed over a bed-and-breakfast inn at its maximum intensity and width of about 80 yards.
Widespread damage to large limbs of native hardwood trees occurred, and one royal palm snapped at a
level above 15 feet. A ground deck with four kayaks became airborne and dropped in mangroves 30
yards away. A large unmounted above-ground cistern containing nearly 200 gallons of water slid over 15
yards, knocking a large camping trailer off its front mount. Bolts securing a large grill to wood ground
decking were sheared off. While numerous tables and lounge chairs were carried to the leeward side of
the property, one 40-lb steel lounge chair was lifted to the edge of the roof line of the two-story residence,
crushing the rain gutter,before settling in the lee of the structure. Small gravel and pea rock along the
waterfront caused moderate to severe paint chipping on the oceanside of several homes. Screens including
their wood frames were torn off several residences'oceanside porches,with one home losing about 40
percent of its oceanside vinyl siding. A phone line was downed along Long Beach Drive.
The tornado continued across mud flats along the southeast edge of Coupon Bight,where only isolated
damage to mangrove branches was observed. Small limbs were observed downed across Long Beach
Drive between Southeast Point and U.S. Highway 1, eventually crossed through a campground just south
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of the Spanish Harbor Channel Bridge. Several tents including one large aluminum-framed dome tent
structure were overturned before the tornado likely passed into Spanish Harbor Channel. The intensity of
the tornado at Spanish Harbor Channel had decreased since its original landfall with estimated winds near
60 mph.
April 15,2018—A fast-moving pre-frontal squall line passing through the upper Florida Keys developed
an embedded supercell thunderstorm along the Florida Bay side of Upper Matecumbe Key. The supercell
thunderstorm moved east-northeast,producing a waterspout which was observed backlit by lightning
shortly before making landfall as a tornado at Indian Mound Trail in Plantation Key, Islamorada. Large
gumbo limbo tree limbs and the top of a palm tree were downed, as well as other hardwood trees. The
rolling driveway gate on an adjacent residence was completely dislodged from its mounts and pushed into
a trailered boat and car and an entire gutter and downspout system was removed from another residence.
Numerous loose items were moved from the backyards and understory of homes onto front lawns and
streets. Most of the observed damage in the Indian Waterways community were consistent with 60 to 70
mph, with possible spot values near 75 mph. The tornado crossed a patch of mangroves and undeveloped
forest and reached greatest intensity at San Pedro Catholic Church where a large tree split at the trunk and
an old-growth mahogany was uprooted, falling onto a portion of the structure connecting the rectory with
the main church. The roof was not substantially damaged. However, several barrel tiles were removed
from the peak ridges forming the hip roof pattern over the rectory, as well as from the southeast edge of
the church, onto the top of the church's main entrance.Numerous large limbs were downed toward the
east,with lightweight free-standing signs deposited northward cross the tornado path from right to left.
Estimated wind speeds were maximized in the range of 90 to 100 mph with maximum width near 60
yards. The tornado continued toward the east-northeast, crossing U.S. Highway 1 and the Old Highway,
but weakened such that only large tree limbs were downed.
The tornado moved out over the ocean as a waterspout and made a second landfall near Lincoln Avenue
on the far southwest portion of Tavernier's oceanside. A progressive narrowing of the damage path down
to nearly 30 yards as well as a turn toward the northwest or north-northwest was observed. Impacts
lessened and included damaged fences and large limbs gradually down to smaller limbs and twigs.No
further impacts were observed northeast of Lowe Street. It is likely the wind speeds 55 to 65 mph were
observed, weakening to below 50 mph roughly 3 blocks from the waterfront.
February 18,2024 -A waterspout originating southwest of Cudjoe Bay made landfall as an EFO tornado
over southern portions of Cud j oe Key. The tornado crossed U.S. Highway 1, and continued northeast as a
waterspout until a second landfall as an EFO tornado over central Big Torch Key. The tornado was
associated with a supercell thunderstorm with a well-defined mesocyclone moving northeast over the
Lower Florida Keys.
Due to the warm, humid nature and coastal geography,waterspouts occur in the Florida Keys more than
anywhere else in the world. In fact,between 50 and 500 waterspouts occur per year.NCEI's storm event
database changed how it reports on waterspouts and as of October 2001 ceased reporting waterspouts by
county in favor of reporting by region(i.e. South Atlantic). However, for the period in which it did report
by county(January 1996 through October 2001)Monroe County experienced 315 waterspout events
across 184 separate days. Two of these events caused damage to property; none caused damage to crops,
injuries or fatalities. Table 4.43 below lists waterspout events by date from 2000 through Sept. 2001;
Table 4.43 summarizes waterspouts by location from Oct. 2001 through November 30,2024 to illustrate
the frequency at which these events occur.
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IIIIIII IIIIIII ii ��m ���� ���������������� IIIIIII' t' ������������ 1
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#of Fatalities/ Property
Location(s) Date Events Injuries Damage
Key West I nt'I Airport 2/3/2000 3 0/0 $0
Summerland Key 3/5/2000 1 0/0 $0
Key Largo 3/18/2000 1 0/0 $0
Big Pine Key, Marathon 3/31/2000 5 0/0 $0
Key West Int'I Airport, Ramrod Key 4/8/2000 3 0/0 $0
Key West I nt'I Airport 5/7/2000 2 0/0 $0
Key West Int'I Airport 5/17/2000 3 0/0 $0
Marathon 5/23/2000 1 0/0 $0
Key West Int'I Airport, Plantation, Marathon 5/30/2000 3 0/0 $0
Key West Int'I Airport 5/31/2000 1 0/0 $0
Key West Int'I Airport, Duck Key 6/1/2000 3 0/0 $0
Key West I nt'I Airport 6/3/2000 2 0/0 $0
Key West Int'I Airport 6/4/2000 3 0/0 $0
Upper Key Largo 6/5/2000 1 0/0 $0
Key West I nt'I Airport 6/11/2000 1 0/0 $0
Key West I nt'I Airport 6/21/2000 1 0/0 $0
Big Pine Key 6/28/2000 1 0/0 $0
Key West I nt'I Airport 7/1/2000 1 0/0 $0
Marathon 7/2/2000 1 0/0 $0
Key West Int'I Airport 7/6/2000 1 0/0 $0
Marathon, Duck Key 7/16/2000 2 0/0 $0
Duck Key, Big Coppitt Island,Summerland Key 7/22/2000 3 0/0 $0
Key West Int'I Airport 7/23/2000 2 0/0 $0
Marathon 7/26/2000 1 0/0 $0
Duck Key, Key West Int'I Airport, Big Coppitt 7/28/2000 5 0/0 $0
Island
Marathon 7/29/2000 1 0/0 $0
Key West I nt'I Airport 8/3/2000 1 0/0 $0
Key West I nt'I Airport 8/9/2000 2 0/0 $0
Marathon 8/11/2000 1 0/0 $0
Duck Key 8/15/2000 2 0/0 $0
Islamorada 8/16/2000 1 0/0 $0
Key West Int'I Airport 8/17/2000 2 0/0 $0
Big Pine Key 8/18/2000 1 0/0 $0
Long Key,Summerland Key, Key West, Duck Key 8/19/2000 4 0/0 $0
Key West Int'I Airport 8/21/2000 2 0/0 $0
Key West NAS 8/27/2000 1 0/0 $0
Key West I nt'I Airport 8/28/2000 1 0/0 $0
Marathon 9/9/2000 1 0/0 $0
Summerland Key 9/10/2000 1 0/0 $0
Marathon 9/11/2000 1 0/0 $0
Key West NAS 9/26/2000 1 0/0 $0
Marathon, Key West Int'I Airport 9/28/2000 3 0/0 $0
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#of Fatalities/ Property
Location(s) Date Events Injuries Damage
Big Pine Key 9/30/2000 1 0/0 $0
Key West NAS, Key West I nt'I Ai rport, Ra m rod Key 10/1/2000 4 0/0 $0
Big Pine Key 10/5/2000 1 0/0 $0
Summerland Key 10/6/2000 1 0/0 $0
Key West Int'I Airport, Key West NAS, Marathon 10/8/2000 3 0/0 $0
Marathon 3/2/2001 1 0/0 $0
Islamorada 4/26/2001 1 0/0 $0
Key West, Key West I nt'I Ai rport 5/1/2001 3 0/0 $0
Key West Int'I Airport 5/20/2001 1 0/0 $0
Key West Int'I Airport 5/31/2001 1 0/0 $0
Key West Intl Airport, Big Pine Key, Ramrod Key 6/14/2001 3 0/0 $0
Big Pine Key, Big Coppit Island, Key West Int'I 6/16/2001 4 0/0 $0
Airport
Big Coppit Island 6/17/2001 1 0/0 $0
Key West I nt'I Airport 7/11/2001 1 0/0 $0
Tavernier, Long Key, Duck Key 7/15/2001 3 0/0 $0
Key West I nt'I Airport 7/18/2001 1 0/0 $0
Key Largo 7/21/2001 1 0/0 $0
Key West I nt'I Airport, Key West NAS 8/10/2001 2 0/0 $0
Key West I nt'I Airport 8/11/2001 1 0/0 $0
Rock Harbor, Upper Key Largo 8/26/2001 2 0/0 $0
Key Colony Beach 9/8/2001 2 0/0 $0
Craig Key 9/12/2001 1 0/0 $0
Key West I nt'I Airport 9/18/2001 2 0/0 $0
Marathon 9/19/2001 1 0/0 $0
East Cape 9/22/2001 1 0/0 $0
Sugarloaf Key, Key West Intl Airport 9/26/2001 2 0/0 $0
Total 122 0/0 $O
Source:NCEI
IIIIIII� IIIIIII IIIIIII IIIIIII'"�������. � t IIIIIII �"'t' IIIIII IIIIIII IIIIIII IIIIIIP "'t t���������������� .2 4iii��
Location #of Events Fatalities/Injuries Property Damage
Alligator Reef Light 23 0/0 $0
American Shoal Light 28 0/0 $0
Big Coppitt Key 64 0/0 $0
Big Pine Key 160 0/0 $200
Cosgrove Shoal Light 1 0/0 $0
Dry Tortugas 4 0/0 $0
Duck Key 37 0/0 $0
Islamorada 19 0/0 $0
Key Largo 37 0/0 $0
Key West 343 0/0 $4,000
Marathon 103 0/0 $0
Marquesas Keys 3 0/0 $0
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Location #of Events Fatalities/Injuries Property Damage
Molasses Reef Light 8 0/0 $0
Plantation Key 11 0/0 $0
Sand Key Light 26 0/0 $0
Smith Shoal Light 18 0/0 $0
Snipe Point 36 0/0 $0
Sombrero Key Light 25 0/0 $0
Summerland Key 61 0/0 $0
Tennessee Reef Light 10 0/0 $0
Total 1,017 0/0 $4,200
Source:NCEI
Two of the recorded waterspouts caused$4,200 in property damage; no recorded events caused death or
injury. Waterspouts have occurred in close proximity to all jurisdictions and unincorporated areas except
for Layton and Key Colony Beach, however that does not mean they have not occurred. The following
narrative descriptions describe the potential damage caused by waterspouts:
August 5,2008—Towering cumulus cloud lines produced a couple waterspouts along the north side of
the Lower Florida Keys. A short-duration waterspout was approximately one-mile northeast of Sugarloaf
Key. The waterspout drifter over a vessel,producing minor damage.
May 5,2019—Two waterspouts formed in succession and in association with a cloud line along the north
side of Key West. The second waterspout was observed to develop within Garrison Bight outside of the
Palm Drive Bridge, and drifted slowly west,reaching a dock at a sailing center. 3 catamarans were
considerably damaged due to overturning while tied to the dock, causing the dock planking to twist and
detach from the pilings. 3 other vessels at the same dock had minor damage with ripped covers and
canopy tops. A video relayed by social media showed the width of the spray ring was only a few yards
across,with the spray ring dissipating before the waterspout reached shore. No damage was observed
onshore at the sailing center nor an adj acent marina.
Based on historical occurrences recorded by NCEI for the 25-year period from 2000 through 2024,
Monroe County averages 2.1 thunderstorm wind events per year—27 of these events caused property
damage.
Over this same period, 12 lightning events were reported which equates to an average of 0.48 lightning
strikes per year. Additionally,the average hailstorm in Monroe County occurs in the afternoon and has a
hail stone with a diameter of just over one inch. Over the 25-year period from 2000 through 2024,
Monroe County experienced 7 reported hail incidents;this averages 0.28 reported incidents per year
somewhere in the planning area.
Based on these historical occurrences,there is a 100%chance that the County will experience severe
weather each year. The probability of a damaging impacts is highly likely.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
In a 25-year period between 2000 and 2024,Monroe County experienced 32 separate tornado incidents.
This correlates to over a 100 percent annual probability that the Region will experience a tornado
somewhere in its boundaries. However, only one of these events was an F2; therefore,the annual
probability of a significant tornado event is around 5 percent. Additionally, it his highly likely the County
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
will experience a waterspout, although waterspouts themselves cause minimal damage,many of the
damaging tornadoes experienced in Monroe County began as waterspouts.
Probability: 4—Highly Likely
C
According to the National Aeronautics and Space Administration(NASA),thunderstorm events in the
future are likely to become more frequent in the southeast because of weather extremes. Thunderstorm
potential is measured by an index that NASA created called the Convective Available Potential Energy
(CAPE) index. This measures how warm and moist the air is,which is a major contributing factor in
thunderstorm/tornado formation. Between 1979 and 2021, Monroe County experienced 10-40 more days
on average with CAPE at or above 1,000 J/kg, which is considered a high cape value. Figure 4.27 below
shows the change in days with high potential for thunderstorms nationwide.
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For a thunderstorm to become a supercell event,meaning that it produces more severe weather like large
hail, damaging winds, and tornadoes, it relies on not only warm moist air,but also wind at different levels
moving in different directions at different speed(wind shear). As the planet warms,wind shear,unlike
warm,moist air, is expected to decrease. Therefore, it is difficult to predict if more supercell thunderstorm
events and the tornadoes they can bring with them are more likely to occur.
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Additionally, while supercell events are associated with tornadoes, only about 20%of supercell
thunderstorms produce tornadoes. To complicate things further, no one fully understands how tornadoes
are formed. Therefore,there is no identified conclusion on how climate change will impact tornadoes.
The relationship between hail and climate change is also unclear, however, a 2022 study shows that
climate change could increase severe and/or significant spring hailstorms within the Central U.S. (Fan,
et.al, 2022). Lightning has a more direct correlation with increasing temperatures as it occurs more
frequently when the temperature is hotter than when it is colder. Romps, et. al postulate that lightning will
increase by 12%for every degree of rise global average air temperature.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PEOPLE
People and populations exposed to the elements are most vulnerable to severe weather. A common hazard
associated with wind events is falling trees and branches. Risk of being struck by lightning is greater in
open areas, at higher elevations, and on the water. Lightning can also cause cascading hazards, including
power loss. Loss of power could critically impact those relying on energy to service, including those that
need powered medical devices. Additionally,the ignition of fires is always a concern with lightning
strikes.
The availability of sheltered locations such as basements,buildings constructed using hail-resistant
materials and methods, and public storm shelters, all reduce the exposure of the population. Individuals
who work outdoors may face increased risk. Residents living in mobile homes are also more vulnerable to
hail events due to the lack of shelter locations and the vulnerability of the housing unit to damages.
The availability of sheltered locations such as basements,buildings constructed using hail-resistant
materials and methods, and public storm shelters, all reduce the exposure of the population. Residents
living in mobile homes are more vulnerable to hail, wind, and tornado events due to the lack of shelter
locations and the vulnerability of the housing unit to damages. Overall,the housing stock in Monroe
County includes 3,286 mobile home units,representing 9% of housing.
Waterspouts are unlikely to cause death or injury—none were reported by NCEI. However, an
exceptionally strong waterspout may lead to death or injury of individuals trapped on boat or in the water
in its path.
Since 2000,the NCEI records 4 injuries, and no fatalities attributed to lightning in Monroe County. NCEI
records no fatalities, and no injuries attributed to wind,hail, or tornado events in Monroe County.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PROPERTY
All property, including residential and commercial buildings as well as critical facilities and
infrastructure, are vulnerable to impacts from severe storms and tornadoes.
Property damage caused by lightning usually occurs in one of two ways—either by direct damages
through fires ignited by lightning, or by secondary impacts due to power loss. According to data collected
on lightning strikes in Monroe County,recorded property damage was due to structure fires and damage
to electrical systems.
NCEI reports $73,000 in property damage due to lightning impacts over 25 years (2000-2024). Based on
these records,the planning area experiences an annualized loss of$2,920 in property damage. The
average impact from lightning per incident in Monroe County is $6,083.
General damages to property from hail are direct, including destroyed windows, dented cars, and
building,roof and siding damage in areas exposed to hail. Hail can also cause enough damage to cars to
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
cause them to be totaled. The level of damage is commensurate with both a material's ability to withstand
hail impacts, and the size of the hailstones that are falling. Construction practices and building codes can
help maximize the resistance of the structures to damage. Large amounts of hail may need to be
physically cleared from roadways and sidewalks, depending on accumulation. Hail can cause other
cascading impacts, including power loss.
During a 25-year span between 2000 to 2024 in Monroe County,NCEI reported$250 in property damage
as a direct result of hail. It should be noted that property damage due to hail is usually insured loss,with
damages covered under most major comprehensive insurance plans. Because of this, hail losses are
notoriously underreported by the NCEI. It is difficult to find an accurate repository of hail damages in
Monroe County,thus the NCEI is still used to form a baseline.
Wind events reported in NCEI for the 25-year period from 2000 through 2024 totaled$147,650 in
property damage, which equates to an annualized loss of$5,906 across the planning area.
Damage from tornadoes to property are both direct(what the tornado physically destroys) and indirect,
which focuses on additional costs, damages and losses attributed to secondary hazards spawned by the
tornado, or due to the damages caused by the tornado. Depending on the size of the tornado and its path,
a tornado is capable of damaging and eventually destroying almost anything. Construction practices and
building codes can help maximize the resistance of the structures to damage.
Secondary impacts of tornado damage often result from damage to infrastructure. Downed power and
communications transmission lines, coupled with disruptions to transportation, create difficulties in
reporting and responding to emergencies. These indirect impacts of a tornado put tremendous strain on a
community. In the immediate aftermath, the focus is on emergency services.
Since 2000, damaging tornadoes in the County are directly responsible for nearly$5,336,700 worth of
damage to property according to NCEI data. This equates to an annualized loss of$213,468.
Waterspouts are unlikely to cause significant property damage unless they come on land as a tornado, in
which case damage would be similar to that of a tornado. Otherwise,waterspouts may cause damage to
property in the water, such as boats and other recreational items. Per NCEI,no property was damaged
from waterspouts in Monroe County.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ENVIPONMENT
The main environmental impact from wind is damage to trees or crops. Wind events can also bring down
power lines,which could cause a fire and result in even greater environmental impacts. Lightning may
also result in the ignition of wildfires. This is part of a natural process,however, and the environment will
return to its original state in time.
Hail can cause extensive damage to the natural environment,pelting animals,trees and vegetation with
hailstones. Melting hail can also increase both river and flash flood risk.
Tornadoes can cause massive damage to the natural environment,uprooting trees and other debris within
the tornado's path. This is part of a natural process,however, and the environment will return to its
original state in time. Waterspouts may cause damage to marshes and wetlands. This is part of a natural
process, however, and the environment will return to its original state in time.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Table 4.45 summarizes the potential negative consequences of severe storms and tornadoes.
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Category Consequences
Public Injuries;fatalities
Responders Injuries;fatalities; potential impacts to response capabilities due to storm
impacts
Continuity of Potential impacts to continuity of operations due to storm impacts;delays in
Operations(including providing services
Continued Delivery of
Services)
Property, Facilities and Possibility of structure fire ignition; potential for disruptions in power and
Infrastructure communications infrastructure;destruction and/or damage to any exposed
property,especially windows,cars and siding; mobile homes see increased
risk.The weakest tornadoes, EFO,can cause minor roof damage,while strong
tornadoes can destroy frame buildings and even badly damage steel
reinforced concrete structures. Buildings are vulnerable to direct impact
from tornadoes and from wind borne debris. Mobile homes are particularly
susceptible to damage during tornadoes.
Environment Potential fire ignition from lightning; hail damage to wildlife and foliage.
Potential devastating impacts in storm's path.
Economic Condition Lightning damage contingent on target;can severely impact/destroy critical
of the Jurisdiction infrastructure and other economic drivers.Contingent on tornado's path;can
severely impact/destroy critical infrastructure and other economic drivers.
Public Confidence in Public confidence is not generally affected by severe weather events if
the Jurisdiction's response and recovery are not timely and effective.
Governance
Natural hazards are often interconnected. Any given hazard may lead to, or be spurred by, another hazard
—sometimes referred to as cascading disasters. Severe storms and tornadoes may be associated with
floods and tropical cyclones.
Development is not expected to impact the incidence of severe storms and tornadoes. As the county
grows, overall asset exposure will increase,which may increase risk. Increases in mobile home and
manufactured home units would cause more significant increases in vulnerability.
Severe weather events are highly likely to continue occurring in Monroe County. Communities should
consider examining power redundancy and surge protection solutions for critical facilities to maintain
operations in the event of a power outage.
Past severe storm events caused injuries to individuals outside and/or in high-risk locations during these
events. Solutions might include an awareness campaign to educate the public on severe weather risk and
preparedness. A robust tornado preparedness education and outreach program would benefit the
community to understand risk and reduce damage; this might include the link between waterspouts and
tornadoes,how to shelter from tornadoes, and damage caused from flying debris, among others.
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The City of Marathon and the Unincorporated areas of the County have larger shares of mobile home
units within their jurisdiction,the population living in these mobile homes are more vulnerable to tornado
and wind impacts.
Although the County utilizes the most recent Florida Building Code to ensure new buildings—especially
critical facilities—can withstand severe winds associated with severe storms and tornadoes (as well as
tropical cyclones),buildings that predate building codes are more vulnerable. A study of such buildings
and potential retrofits would decrease vulnerability of these structures.
The following tables summarize tornadoes and thunderstorm risk by jurisdiction. Most aspects of
tornadoes and thunderstorm risk do not vary substantially by jurisdiction; however,wind and hail impacts
may be greater in more highly developed areas with higher exposure in terms of both property and
population density. Additionally,mobile home units are more vulnerable to wind damage. While mobile
home units do not comprise a significant proportion of any jurisdictions' housing mix,mobile units make
up 13%and 10% of the housing stock in unincorporated Monroe County and the City of Marathon,
respectively.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
TO
Spatial Warning
Jurisdiction Probability Impact Extent Time Duration Score Priority
Key Colony Beach 4 1 3 4 1 2.6 M
Key West 4 1 3 4 1 2.6 M
Layton 4 1 3 4 1 2.6 M
Marathon 4 2 3 4 1 2.9 M
Islamorada 4 1 3 4 1 2.6 M
Unincorporated 4 2 3 4 1 2.9 M
Monroe County
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
LIGHTNING L
Jurisdiction Probability Impact Spatial WarningDuration Score Priority
Extent Time
All Jurisdictions 4 1 1 4 1 2.2 M
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
E,
Spatial Warning
Jurisdiction Probability Impact Extent Time Duration Score Priority
Key Colony Beach 3 2 2 4 1 2.4 M
Key West 3 2 2 4 1 2.4 M
Layton 3 2 2 4 1 2.4 M
Marathon 3 3 2 4 1 2.7 M
Islamorada 3 2 2 4 1 2.4 M
Unincorporated 3 3 2 4 1 2.7 M
Monroe County
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Hazard Probability Impact Spatial Warning Time Duration PRI
Extent Score
Tropical Cyclones Highly Likely Catastrophic Large More than 24 hrs Less than 1 week
Hurricanes and tropical storms are classified as cyclones and defined as any closed circulation developing
around a low-pressure center in which the winds rotate counter-clockwise in the Northern Hemisphere(or
clockwise in the Southern Hemisphere) and whose diameter averages 10 to 30 miles across. A tropical
cyclone refers to any such circulation that develops over tropical waters. Tropical cyclones act as a
"safety-valve," limiting the continued build-up of heat and energy in tropical regions by maintaining the
atmospheric heat and moisture balance between the tropics and the pole-ward latitudes. The primary
damaging forces associated with these storms are high-level sustained winds,heavy precipitation, and
tornadoes.
The key energy source for a tropical cyclone is the release of latent heat from the condensation of warm
water. Their formation requires a low-pressure disturbance,warm sea surface temperature,rotational
force from the spinning of the earth, and the absence of wind shear in the lowest 50,000 feet of the
atmosphere. Most hurricanes and tropical storms form in the Atlantic Ocean, Caribbean Sea, and Gulf of
Mexico during the official Atlantic hurricane season,which encompasses the months of June through
November. The peak of the Atlantic hurricane season is in early to mid-September and the average
number of storms that reach hurricane intensity per year in the Atlantic basin is about six.
While hurricanes pose the greatest threat to life and property,tropical storms and depressions also can be
devastating. A tropical disturbance can grow to a more intense stage through an increase in sustained
wind speeds.
As an incipient hurricane develops,barometric pressure (measured in millibars or inches) at its center
falls and winds increase. If the atmospheric and oceanic conditions are favorable, it can intensify into a
tropical depression. When maximum sustained winds reach or exceed 39 miles per hour, the system is
designated a tropical storm, given a name, and is monitored by the National Hurricane Center in Miami,
Florida. When sustained winds reach or exceed 74 miles per hour the storm is deemed a hurricane.
Hurricanes are given a classification based on the Saffir-Simpson Scale; this scale is reproduced in Table
4.46. The progression of a tropical disturbance is described below.
Tropical Depression: A tropical cyclone with maximum sustained winds of 38 mph(33 knots) or less.
Tropical Storm: A tropical cyclone with maximum sustained winds of 39 to 73 mph(34 to 63 knots).
Hurricane: A tropical cyclone with maximum sustained winds of 74 mph(64 knots) or higher. In the
western North Pacific,hurricanes are called typhoons; similar storms in the Indian Ocean and South
Pacific Ocean are called cyclones.
Major Hurricane: A tropical cyclone with maximum sustained winds of I I I mph(96 knots) or higher,
corresponding to a Category 3, 4 or 5 on the Saffir-Simpson Hurricane Wind Scale.
The greatest potential for loss of life related to a hurricane is from the storm surge. Storm surge is water
that is pushed toward the shore by the force of the winds swirling around the storm as shown in Figure
4.28. This advancing surge combines with the normal tides to create the hurricane storm tide,which can
increase the mean water level to heights impacting roads, homes and other critical infrastructure. In
addition, wind driven waves are superimposed on the storm tide. This rise in water level can cause severe
flooding in coastal areas,particularly when the storm tide coincides with the normal high tides.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
The maximum potential storm surge for a location depends on several different factors. Storm surge is a
very complex phenomenon because it is sensitive to the slightest changes in storm intensity, forward
speed, size (radius of maximum winds-RMW), angle of approach to the coast,central pressure (minimal
contribution in comparison to the wind), and the shape and characteristics of coastal features such as bays
and estuaries. Other factors which can impact storm surge are the width and slope of the continental shelf
and the depth of the ocean bottom. A narrow shelf, or one that drops steeply from the shoreline and
subsequently produces deep water close to the shoreline, tends to produce a lower surge but higher and
more powerful storm waves. A shallow slope, as is found off the coast of Monroe County,will produce a
greater storm surge than a steep shelf.
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Damage during hurricanes may also result from inland flooding from associated heavy rainfall.
Like hurricanes,nor'easters are ocean storms capable of causing substantial damage to coastal areas in the
Eastern United States due to their strong winds and heavy surf.Nor'easters are named for the winds that
blow in from the northeast and drive the storm up the East Coast along the Gulf Stream. They are caused
by the interaction of the jet stream with horizontal temperature gradients and generally occur during the
fall and winter months when moisture and cold air are plentiful.
Nor'easters are known for dumping heavy amounts of rain and snow,producing hurricane-force winds,
and creating high surf that causes severe beach erosion and coastal flooding. There are two main
components to a nor'easter: (1) a Gulf Stream low-pressure system(counter-clockwise winds) generated
off the southeastern U.S. coast, gathering warm air and moisture from the Atlantic, and pulled up the East
Coast by strong northeasterly winds at the leading edge of the storm; and(2) an Arctic high-pressure
system(clockwise winds)which meets the low-pressure system with cold, arctic air blowing down from
Canada. When the two systems collide,the moisture and cold air produce a mix of precipitation and can
produce dangerously high winds and heavy seas. As the low-pressure system deepens,the intensity of the
winds and waves increases and can cause serious damage to coastal areas as the storm moves northeast.
Warning Time: I —More than 24 hours
Duration: 3—Less than I week
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Hurricanes and tropical storms can occur anywhere within Monroe County and its jurisdictions. while
coastal areas are most vulnerable to hurricanes,their wind and rain impacts can be felt hundreds of miles
inland. Storm surge impacts are more limited, affecting areas along coastal and estuarine shorelines and
reaching further inland depending on the height of the surge. All of Monroe County and its jurisdictions
are vulnerable to hurricane and tropical storm surge. Figure 4.29 shows potential storm surge inundation
for a 100-yr storm surge event and Figure 4.30 shows inundation for the 500-yr storm surge event. As
shown in these maps, almost all of Monroe County and its jurisdictions are vulnerable to storm surge
impacts from the 100yr storm surge event. The 500yr storm surge event inundates a similar extent but
produces higher flood depths further inland. Maps of storm surge impacts by jurisdiction are available in
individual jurisdictional annexes.
Spatial Extent: 4—Large
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Hurricanes and tropical storms can cause catastrophic damage to coastlines and several hundred miles
inland. Wind speed is the determining factor in the Saffir-Simpson Scale(Table 4.46),which is used as a
measure of hurricane intensity and rated on a scale of 1 to 5, with 5 being the most intense.
Hurricane force winds can extend outward by about 35 miles from the eye of a small hurricane to more
than 150 miles from the center of a large hurricane. Tropical storm force winds may extend even further,
up to approximately 300 miles from the eye of a large hurricane. In general,the front right quadrant of a
storm,relative to its direction of movement, is the most dangerous part of the storm. Wind speeds are
highest in this area due to the additive impact of the atmospheric steering winds and the storm winds.
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Category Sustained Types of Damage
Wind Speed(MPH)
Very dangerous winds will produce some damage;Well-
constructed frame homes could have damage to roof,shingles,
1 74-95 vinyl siding and gutters. Large branches of trees will snap,and
shallowly rooted trees may be toppled. Extensive damage to power
lines and poles likely will result in power outages that could last a
few to several days.
Extremely dangerous winds will cause extensive damage;Well-
constructed frame homes could sustain major roof and siding
2 96-110 damage. Many shallowly rooted trees will be snapped or uprooted
and block numerous roads. Near-total power loss is expected with
outages that could last from several days to weeks.
Devastating damage will occur;Well-built framed homes may incur
major damage or removal of roof decking and gable ends. Many
111-129 trees will be snapped or uprooted, blocking numerous roads.
Electricity and water will be unavailable for several days to weeks
after the storm passes.
Catastrophic damage will occur;Well-built framed homes can
sustain severe damage with loss of most of the roof structure
130-156 and/or some exterior walls. Most trees will be snapped or uprooted,
and power poles downed. Fallen trees and power poles will isolate
residential areas. Power outages will last weeks to possibly months.
Most of the area will be uninhabitable for weeks or months.
Catastrophic damage will occur;A high percentage of framed
homes will be destroyed,with total roof failure and wall collapse.
Y � p
157+ Fallen trees and power poles will isolate residential areas. Power
outages will last for weeks to possibly months. Most of the area will
be uninhabitable for weeks or months.
Source: National Hurricane Center
The Saffir-Simpson Scale categorizes hurricane intensity linearly based upon maximum sustained winds
and barometric pressure,which are combined to estimate potential damage. Categories 3,4, and 5 are
classified as"maj or"hurricanes and,while hurricanes within this range comprise only 20 percent of total
tropical cyclone landfalls,they account for over 70 percent of the damage in the United States. Table
4.47 describes the damage that could be expected for each category of hurricane. Damage during
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy J a iii`.m U a iii. .: .6
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
hurricanes may also result from spawned tornadoes, storm surge, and inland flooding associated with
heavy rainfall that usually accompanies these storms. Tornadoes are discussed in Section 4.5.3.
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Description of Damages
Category Level Example
No real damage to building structures. Damage
1 MINIMAL Primarily to unanchored mobile homes,shrubbery, � " , tt �F„
and trees. Also,some coastal flooding and minor'
pier damage.
Some roofing material,door,and window damage.
Considerable damage to vegetation, mobile homes,
2 MODERATE
etc. Flooding damages piers and small craft in
unprotected moorings may break their moorings.
Some structural damage to small residences and
utility buildings,with a minor amount of curtainwall
failures. Mobile homes are destroyed. Flooding ���
EXTENSIVE
near the coast destroys smaller structures,with
larger structures damaged by floating debris. a,
Terrain may be flooded well inland.
More extensive curtainwall failures with some
complete roof structure failure on small residences.
EXTREME
Major erosion of beach areas. Terrain may be �
flooded well inland.
Complete roof failure on many residences and
industrial buildings. Some complete building
failures with small utility buildings blown over or
CATASTROPHIC �rt
away. Flooding causes major damage to lower .
floors of all structures near the shoreline. Massive
evacuation of residential areas may be required.
Source:National Hurricane Center;Federal Emergency Management Agency
The county is susceptible to the full force of every category of hurricane.
In addition to the combined destructive forces of wind,rain, and lightning,hurricanes can cause a surge in
the ocean,which also affects the severity of hurricane and tropical storm impacts. Storm surge affects
areas along coastal shorelines and further inland depending on the height of the surge. Storm surge can
raise the sea level as high as 25 feet or more in the strongest hurricanes. Storm surge can also cause
extensive damage on the backside of a hurricane as storm surge waters are sucked back out to sea. Figure
4.29 and Figure 4.30 display potential depth of storm surge flooding for the 100yr and 500yr storm surge
event, respectively.
Impact: 4—Catastrophic
According to NOAA Historical Hurricane Tracks data, 648 hurricanes and tropical storms made landfall
in Monroe County between 1900 and 2024. These storm tracks are shown in Figure 4.31. A summary of
the storms by hurricane category is provided in Table 4.58.
�Aan�roe County,
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Storm Category Count
Cat 1 71
Cat 2 64
Cat 3 74
Cat 4 46
Cat 5 11
Tropical Storm 215
Tropical Depression 167
Total 648
The map below is not an exhaustive list of hurricanes that have affected Monroe County. Several storms
have not made landfall in the County,yet had strong enough wind or rain impacts to cause impacts.
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NCEI records hurricane and tropical storm events across the region by county and zone; therefore, one
event that impacts multiple jurisdictions may be recorded multiple times. During the 24-year period from
2000 through 2024,NCEI records 29 hurricane and tropical storm events. The named storms associated
with these events are summarized in Table 4.49. This table only represents those events reported to NCEI
as a Hurricane or Tropical Storm. Where property damage estimates were broken out by type,NCEI
reports only the value of wind-related damages.
Hurricane Irma(2017)is reported by NCEI as a Hurricane,however there are no reported damages for
Hurricane Irma despite the storm having a significant impact on the County. No official monetary figures
have been reported,however Monroe County reports over 1,000 homes were destroyed and almost 3,000
suffered major damage. In total, 50 Florida counties were included in the disaster declaration and eligible
for individual assistance. FEMA has approved over$1 billion individual and household program dollars
across these counties.
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Property
Date Storm Deaths/Injuries Damage Crop Damage
9/13/2001 Tropical Storm Gabrielle 1/0 $0 $0
11/4-11/5/2001 Hurricane Michelle 0/0 $0 $0
8/11/2004 Hurricane Charley 0/0 $160,000 $160,000
9/1/2004 Hurricane Frances 0/0 $20,000 $20,000
9/12/2004 Hurricane Ivan 0/0 $0 $0
9/24/2004 Hurricane Jeanne 0/0 $5,000 $5,000
6/9-6/10/2005 Tropical Storm Arlene 0/0 $90,000 $90,000
7/8/2005 Hurricane Dennis 1/0 $7,150,000 $7,150,000
8/26/2005 Hurricane Katrina 0/0 $6,900,000 $6,900,000
9/20/2005 Hurricane Rita 0/0 $0 $0
10/23/2005 H u rrica ne Wi I ma 0/2 $33,000,000 $99,000,000
8/29-8/30/2006 Tropical Storm Ernesto 0/0 $200 $200
8/17-8/18/2008 Tropical Storm Fay 0/2 $2,800,000 $8,400,000
8/30/2008 Hurricane Gustav 1/0 $0 $0
9/8-9/9/2008 Hurricane Ike 0/0 $13,500,000 $26,000,000
8/25/2012 Tropical Storm Isaac 0/0 $2,170,000 $2,170,000
10/24-10/25/2012 Hurricane Sandy 0/0 $4,000 $4,000
9/9/2017 Hurricane Irma 2/20 $0 $0
9/3/2018 Tropical Storm Gordon 0/0 $500 $500
8/24/2020 Hurricane Laura 0/0 $2,500 $0
11/7-11/11/2020 Tropical Storm Eta 0/1 $506,000 $0
7/5/2021 Tropical Storm Elsa 0/0 $0 $0
8/13/2021 Tropical Storm Fred 0/0 $0 $0
9/27-9/28/2022 Hurricane Ian 0/0 $0 $0
8/29/2023 Hurricane Idalia 0/0 $35,000 $0
8/3/2024 Tropical Storm Debby 0/0 $0 $0
9/25-9/26/2024 Hurricane Helene 0/0 $0 $0
10/9/2024 Hurricane Milton 0/0 $0 $0
11/6/2024 Hurricane Rafael 0/0 $0 $0
Total 5/25 $66,343,2OO $149,899,7OO
Source: NCEI
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Table 4.50 further details storm surge events that have impacted Monroe County in the 24-year period
from 2000 to 2024—note that no storm surge events were recorded until 2005. Event narratives following
this table provide a fuller scope of the impacts from selected wind and storm surge events.
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Property Crop
Date Storm Deaths/Injuries Damage Damage
6/10/2005 Tropical Storm Arlene 0/0 $0 $0
9/20/2005 Hurricane Rita 0/1 $0 $0
10/24/2005 H u rrica ne Wi I ma 0/0 $0 $0
8/19/2008 Tropical Storm Fay 0/0 $1,000,000 $0
8/31/2008 Hurricane Gustav 0/0 $0 $0
9/10/2008 Hurricane Ike 0/0 $1,300,000 $0
10/26/2012 Hurricane Sandy 0/0 $1,000 $0
9/9-9/10/2017 Hurricane Irma 1/0 $0 $0
11/8-11/9/2020 Tropical Storm Eta 0/0 $100,000 $0
9/27/2022 Hurricane Ian 0/0 $0 $0
8/29/2023 Hurricane Idalia 0/0 $0 $0
8/4/2024 Tropical Storm Debby 0/0 $0 $0
9/26/2024 Hurricane Helene 0/0 $0 $0
10/8-10/10/2024 Hurricane Milton 0/0 $0 $0
11/6/2024 Hurricane Rafael 0/0 $0 $0
Total 1/1 $2,4011000 $0
Source:NCEI
August 11,2004—During the evening of August 12, Hurricane Charley moved north through the Florida
Straits,the Keys east of the Seven Mile Bridge, and into Florida Bay. Peak wind gusts to 64 mph were
recorded at Sombrero Key Light, 61 mph at Long Key and 54 mph at Molasses Reef C-MAN stations
during this convective band, along with reported wind gust to 52 mph from a spotter on Duck Key.
Damage along the island chain from Marathon through Ocean Reef was limited to downed tree limbs,
power lines and unreinforced signs, and almost entirely from the convective band. Beginning around
3:30 AM EST, strong gradient winds began in the Lower Keys and Dry Tortugas. Peak wind gusts of 62
mph were recorded at Sand Key C-MAN station,with gusts to 58 mph at Key West International Airport.
Peak wind measurements of 46 to 52 mph were measured along the island chain from Boca Chica Key
through Summerland Key. Wind damage including a few uprooted and snapped trees, large tree limbs,
power lines, fences and unreinforced signs. A sailboat broke loose from moorings around 7:30 AM EST
on August 13, striking a phase of a 115 kilovolt transmission line serving the lower Keys, causing a
widespread power outage west of Marathon through Key West.
Maximum storm surge was estimated to near 6 feet at Dry Tortugas/Garden Key. Wave action produced
extensive flooding of the park grounds outside of the Fort Jefferson walls. Approximately 1000 feet of
brickwork was lost on the outer moat wall,which was completely submerged at the time of high tide.
Numerous finger docks and the deck of the main dock were destroyed. Scaffolding used during the Fort's
multi-year renovation project was also damaged and found floating in the moat. The Dry Tortugas C-
MAN station, which included instrumentation less than 15 feet above mean sea level,was also destroyed,
likely from the combination of wave action and elevated tide levels. Maximum storm surge was
estimated at one foot above normal at Key West. Wave action produced minor coastal flooding along the
oceanfront. An estimated 11,000 visitors evacuated the Keys, causing an estimated tourism loss of 5.3
million dollars.
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September 1,2004—As Hurricane Frances tracked from the northwest Bahamas through the central
Florida peninsula, several outer rain bands crossed the Florida Keys producing short episodes of strong
wind gusts. A peak wind gust of 93 mph was measured at the Sombrero Key Light C-MAN station, at an
elevation of over 150 feet above mean sea level. Other notable wind gusts included 63 mph at Sand Key
C-MAN and 68 mph at Molasses Reef C-MAN. Over land,peak wind gusts included 54 mph at the U.S.
Coast Guard Group Key West, and 51 mph at the Key West Harbor. Stronger wind gusts were estimated
along the south side of Marathon,near Flamingo Island, and in the squall that produced the extreme
winds at Sombrero Key Light. These winds tore screens in porches in isolated fashion from Big Pine Key
through Grassy Key and blew out plastic or vinyl panels of commercial signs in Marathon. Otherwise,
damage was limited to downed tree limbs and minor power outages.
As Frances passed to the north, strong northwest and west winds drove waters higher than normal along
the Florida Bay shoreline up to 1 foot above normal at Vaca Key and estimated to near 2.5 feet above
normal along the bayside of North Key Largo and Jewfish Creek. These tides produced minor flooding of
side streets and a parking lot near Mile Marker 106 of the Overseas Highway.
July 8,2005—Hurricane Dennis passed within 75 miles southwest of Key West as a category 2
hurricane. Over the Monroe County. In the Lower Keys,maximum winds were sustained at 61 mph with
gusts to 74 mph at Key West and 59 mph gusting to 78 mph at Sand Key. Unofficial wind gusts to 107
mph were reported at Cudjoe Key. Maximum storm tides were estimated to 4.5 feet above mean sea level
on the Atlantic shore of Key West near the International Airport. One fatality occurred aboard a vessel
moored at Stock Island due to drowning. No injuries were reported. Property damage estimated at$6.8M
due to wind damage mainly to roofing, electrical equipment, landscaping and mobile homes,with
estimated$100K due to combined wind and rain damages to the Key West Airport. Minimum pressure
reported was 998.8 mb at Sand Key.
In the Middle Keys,maximum rainfall was 2.00 inches at Curry Hammock State Park, east of Marathon.
Maximum winds were 74 mph gusting to 87 mph at Sombrero Key Light. Maximum storm tides were
estimated at 2 to 3 feet above mean sea level,producing minor flooding under elevated homes at
Marathon. Damage was estimated at $250K from wind damage to commercial signs, landscaping and
electrical equipment.
In the Upper Keys, the maximum rainfall was 1.55 inches at Tavernier. Maximum Storm Tides were
estimated at 2 to 3 feet above mean sea level, overtopping bulkheads and producing minor street flooding.
Maximum winds were recorded at 59 mph gusting to 68 mph at Carysfort Reef Light. Damage was
estimated at$1 OOK mostly to landscaping and electric utility equipment.
August 26,2005—Hurricane Katrina passed 40 miles north of Key West as a category one hurricane.
Katrina passed 15 miles north Dry Tortugas National Park as a category 2 hurricane. Over the Monroe
County Lower Keys,maximum winds were 62 mph with gusts to 77 mph at Sand Key. In the Middle
Keys, Maximum winds were 67 mph with gusts to 80 mph at Sombrero Key Light, and in the Upper
Keys, max winds were 61 mph with gusts to 77 mph at Molasses Reef Light. In Key West,rainfall totally
10.05 inches caused extensive street flooding and some residential flooding. At Curry Hammock State
Park rainfall totaled 9.89 inches,resulting in widespread flooding. At John Pennekamp State Park in Key
Largo,rainfall measured 5.94 inches. Storm tides were estimated at 2.5 feet above mean sea level at Key
West, 1 foot at Molasses Reef Light, and 1.5 feet at Curry Hammock State park. Total property damage
from the event in Monroe County was estimated at$6.9 million. $5 million of this damage was caused by
a tornado in Marathon, and the remainder due to wind and rain damage.
October 23,2005—The center of Hurricane Wilma moved northeast from the vicinity of Dry Tortugas
northeast through 65 miles northwest of Key West during the night of October 23 to 24, 2005. Hurricane
Wilma resulted in at least 2 injuries and at least$33 million in damages to Monroe County. In the Upper
Keys, maximum winds were measured at 75 mph with gusts to 91 mph and averaged around 70 to 80
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mph. In the Middle Keys,maximum winds measured 87 mph with gusts to 105 mph at Sombrero Key
Light and averaged an estimated 80 to 90 mph. In the Lower Keys, maximum winds were measured at 71
mph with gusts to 83 mph before instrumentation failed. Peak wind gusts of 123 mph at Cudjoe Key and
133 mph at Dry Tortugas National Park were recorded by spotters and park personnel. Overall,winds
averaged 80 to 90 mph across the Lower Keys. Monroe County experienced general Category 1 Saffir
Simpson damage from wind. Rainfall associated with the storm was fairly light,ranging from 1.5 inches
at Pennekamp State Park to 2.39 inches at Duck Key.
The most destructive aspect of Hurricane Wilma was the storm surge. In the Upper Keys, Wilma
primarily produced one storm tide along the bayside ranging from 4 to 5 feet above sea level with the
worst in Lower Matecumbe Key. North of Key Largo,U.S. Route 1 was temporarily flooded at least 3
inches. In the Middle Keys,Wilma caused two separate storm tides. The first was 3 feet above mean sea
level along the south shore of Marathon. The second tide was up to 9.5 feet above mean sea level along
the north shore of Marathon. At one point during the storm,the City of Marathon was completely under
water. Most homes and businesses sustained damage by flooding of 2 to 4 feet with severe electrical,
drywall and mold-related damages. Wilma also caused two separate storm tides in the Lower Keys. The
first was 4.5 feet above mean sea level along the south shore of Key West. The second ranged from near 6
feet above mean sea level at Key West to 8.5 feet along the north shore of Big Coppitt Key, Cudjoe Key,
and Big Pine Key. About 60 percent of Key West was under water, and nearly 12000 vehicles were
flooded. Most homes sustained damage by flooding of 2 to 3 feet with severe electrical, drywall and
mold-related damages.
August 17,2008—Tropical Storm Fay moved north from Cuba, through the Florida Straits, and passed
north through the Lower Florida Keys. Fay affected mainland Monroe when the storm made landfall on
August 19th near Cape Romano. Across the Upper Florida Keys, storm total rainfall ranged from 3.42
inches at Plantation Key to 4.38 inches at Islamorada. The highest sustained wind in the Upper Florida
Keys was 37 mph with a peak gust of 53 mph recorded at Upper Matecumbe Key.A peak gust of 60 mph
was recorded at the Islamorada Fire Station. Across the Middle Florida Keys, storm total rainfall ranged
from 2.45 inches at Long Key to 7.27 inches at Marathon. The highest sustained wind in the Middle
Florida Keys of 49 mph with a peak gust of 56 mph was recorded at Long Key. In the Lower Keys, storm
total rainfall ranged from 3.35 inches at Key West International Airport to 7.05 inches at Ramrod Key.
The highest sustained wind of 38 mph with a peak gust of 51 mph was recorded at Key West International
Airport. A peak gust of 54 mph was recorded at Cudjoe Key. In mainland Monroe County,maximum
sustained winds were estimated to be around 60mph at landfall and increased to around 65 mph.
The Keys also experienced minor coastal storm tides during this event. In the Upper Keys such tides
peaked at 2.5 feet above mean sea level along the south shore of Lower Matecumbe Key, equating to a
storm surge less than one foot above astronomical tide levels. Similarly coastal storm tide peaked at 2.5
feet above mean sea level along the south shore of Marathon and in the Lower Keys.
One direct serious injury due to wind-blown debris occurred in Marathon,but no fatalities were reported.
25,000 people, mainly visitors and non-residents of the Florida Keys,were evacuated. Countywide
Tourism losses were estimated at 8 to 10 million dollars. Damage and preparedness costs to government
facilities and infrastructure totaled 2.8 million dollars,with about one million dollars due to coastal
flooding damage to roads, and 200,000 dollars due to erosion. Approximately 120,000 dollars damaged
occurred due to wind. 2 tornadoes occurred in the Lower Keys,with no structural damage reported. Total
damage due to the tornadoes was approximately one thousand dollars.
September 9-10, 2017—Hurricane Irma made landfall over the Lower Florida Keys as a category 4
hurricane on the Saffir-Simpson Scale,with the eye crossing directly over Cudjoe Key. Due to the large
radius of hurricane-force winds, destructive hurricane-force winds and storm surge impacted all of the
Florida Keys. Extensive damage to residences,businesses, electric,water and communications utilities
resulted. When Irma made landfall over Cudjoe Key, it had maximum sustained winds near 130 mph.
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The highest sustained winds in the Lower Florida Keys were measured at 70 mph at the Key West
Harbor,with a peak measured gust at 120 mph at the Key Deer National Wildlife Refuge and a private
residence on Big Pine Key. Storm survey evidence estimated the highest 3-second wind gusts on Big Pine
Key and Scout Key, at 150 to 160 mph. Rainfall totals of 6 to 12 inches were measured at available rain
gauges,with a maximum of 12.54 inches at the Key Deer Wildlife Refuge on Big Pine Key.
Maximum storm surge in the Lower Florida Keys was measured at 5 to 8 feet from Sugarloaf Key
through Duck Keys,with total water height reaching a maximum of 5 to 6 feet above ground level in
eastern Big Pine Key, and wave wash marks up to 20 feet above mean high water along Long Beach Road
on the south side of Big Pine Key. In the Middle Florida Keys, storm surge estimates of 5 to 8 feet were
evident from Marathon and Key Colony Beach, Grassy Key, and Duck Key. Storm surge values of 3 to 5
feet were observed from Conch Key through Long Key and Layton. Total water height ranged from
around 4 to 5 feet above ground level along the western edge of Marathon and Key Colony Beach to
about 2 feet above ground level in Layton. In the Upper Keys, storm surge of 3 to 4 feet was observed
throughout Islamorada through Ocean Reef, as well as along Barnes Sound near Manatee Bay. Total
water heights were generally 2 to 4 feet above ground level.
In the Upper Keys, flooding of oceanside residences and businesses up to 2 feet occurred. In the Middle
Keys, numerous mobile homes were destroyed in Marathon as the storm surge pushed them off their
foundations. In the Lower Keys,major damage to mobile homes and marinas was observed along the
oceanside, especially from Ramrod Key,through Big Pine Key,through Ohio Key. The eastbound lanes
of U.S. Highway 1 were washed out just east of the Bahia Honda State Park entrance. Many residences
and businesses were flooded at the maximum surge. More than 1,300 vessels were damaged or destroyed,
requiring removal from the coastal waters.
Differing reports detail injuries and fatalities attributed to the storm differently.NCEI reports a total of 10
fatalities—4 of which were directly attributed to the storm—and 40 direct injuries. Direct reports from
Monroe County and the incorporated jurisdictions list no deaths(Layton, Key Colony Beach,
Islamorada), 3 deaths (Key West), and 13 deaths (Monroe). Key West also reported 6 injuries. The list
below summarizes other damages reported by the County and incorporated jurisdictions:
— 85%of housing stock impacted,more than 4,000 homes destroyed or damaged(Monroe County);
— Commercial lobster industry lost$3.7 million in traps, estimated economic loss of$38.9 million;
— 80%of businesses suffered extended losses;
— Tourism industry($2.7 billion) suffered long term impacts;
— Extended power outages (11 days in most areas,up to 20 days to restore entire grid), some water
system impacts;
— Airports, schools,re-entry, and ports closed for as little as 7 and up to 15 days;
— $25 million in property damages and$12 million in infrastructure damage, $16 million in economic
impacts. NFIP flood damage claims paid$12.4 million(Key West);
— 1 destroyed commercial building, 30 majorly damaged commercial buildings, 83 minorly damaged
commercial buildings, 193 destroyed homes, 355 majorly damaged homes, 766 minorly damaged
homes.
November 7,2020—Tropical Storm Eta passed northwest through the middle Florida Keys. Primary
impacts from wind occurred as result of a rain band which drifted very slowly north through the Upper
Florida Keys. Peak wind gusts were between 50 to 60 mph, downing trees and large tree limbs,utility
lines, and a billboard. One residence was destroyed by a fallen tree resulting in one minor injury. Two
other residential structures were significantly damaged,with three inaccessible due to blocked streets.
About 20 separate power outages affected about 1,000 customers, mostly in Key Largo.
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Storm Surge flooding was generally in the 1.5-to-2.5-foot range,producing significant street flooding in
oceanside Key Largo neighborhoods. The northbound right-of-way was damaged including major
erosion, loss of riprap, and about 3,000 feet of fencing along northbound U.S. Highway 1 along the west
end of Barnes Sound and Manatee Bay. Minor overwash occurred in the middle Florida Keys at Key
Colony Beach, along with yard and dock flooding along the Florida Bay side of Marathon. Widespread
rainfall of 3.5 to over 8 inches was measured throughout the Keys,with the highest totals in Key Largo.
Damages were estimated near$500K due to homes damaged by falling trees and tree limbs, as well as
utility damage. Storm Surge damage was estimated around$1 OOK due to wave action to the U.S Highway
1 right-of-way.
July 5,2021 —Tropical Storm Elsa brought numerous rain bands through the Lower and Middle Florida
Keys, with strong tropical-storm-force wind gusts measured near Key West. Maximum winds over the
Florida Keys of Monroe County were recorded at 52 mph with gusts to 70 mph at Key West. Wind
impacts were confined to damage to trees and utility lines,mostly in Key West proper. A few power
distribution circuits were out in the city of Key West due to fallen trees and tree limbs. Total customers
impacted were estimated around 3,500 in the Lower Keys.
No storm surge was recorded in the Florida Keys,however the onshore southerly winds raised water
levels just below 1.0 foot above normal at Key West closer to low astronomical tide. Moderate oceanside
beach erosion occurred at Key West along with overwash from heavy wave action. Rainfall estimates of
7.5 inches resulted in brief but significant street flooding in Key West.
September 27,2022—Hurricane Ian moved north from far western Cuba into the western Straits of
Florida. As Ian moved north over the Dry Tortugas and into the southeastern Gulf of Mexico, tropical
storm force winds and damaging storm surge occurred across the Florida Keys. A secondary but lesser
storm surge occurred along the Gulf of Mexico and Florida Bay side of the Lower and Middle Keys after
Major Hurricane Ian moved inland the west coast of Florida, and well after tropical storm force winds had
subsided.
Sustained tropical storm force winds occurred in the Lower Florida Keys and were measured in the 45 to
60 mph range. Peak gusts of 79 mph at the Key West International Airport, 68 mph at the Naval Air
Station Key West Boca Chica Field, and 75 mph at an electric substation on Big Coppitt Key. Wind
damage occurred in the form of scattered large tree limbs downed,with isolated uprooted or snapped
trees. Scattered fences were downed in the city of Key West,with isolated building damage. Total power
outages peaked near 10,000 customers in the Lower Florida Keys,representing approximately one-third
of the Keys Energy service area.
August 29,2023—Hurricane Idalia produced tropical storm-force wind gusts occurred in squalls which
passed mainly through portions of the Lower Florida Keys. The maximum winds and rainfall occurred
with the passage of one strong rainband which resulted in isolated fallen trees and tree limbs, isolated
power outages primarily affecting a street block or two at a time. The combination of an approaching
spring tide and strong southerly winds sustained just below tropical storm force resulted in storm tides
ranging from 1.0 to 2.5 feet above MHHW along the oceanside. Moderate to heavy ocean wave overwash
and street flooding within a few oceanside neighborhoods on the southwest portion of Key West occurred
within a few hours of high tide.
August 3,2024—Hurricane Debby caused tropical storm-force wind gusts with rain bands extending
throughout the Straits of Florida and Florida Keys. Sustained tropical storm force winds occurred over the
coastal waters mainly from along the Lower Florida Keys west of the Seven Mile Bridge through Dry
Tortugas. The tropical-storm force wind gusts resulted in fallen large tree limbs and isolated power
outages primarily affecting a street block or a multi-unit residential complex at a time. The combination
high tide and strong southerly winds sustained just below tropical storm force resulted in storm tides up to
an estimated 1.8 feet above MHHWIalong the oceanside of the Lower Florida Keys,but lower water
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
levels were measured at gauges in the lee along the Gulf of Mexico and Florida Bay side of the Florida
Keys. Moderate to heavy ocean wave overwash resulted in temporary flooding on oceanfront low
elevation streets in Key West. In combination with brief heavy rainfall from the rain bands, a section of
State Road A 1 A in Key West was closed due to having little or no drainage in a construction zone.
September 25,2024—Hurricane Helene moved northeast across the eastern Gulf of Mexico,
strengthening to category 2 strength. Widespread lower-end tropical storm force winds overspread the
Florida Keys and its adjacent coastal waters producing isolated large tree limb and utility line damage.
Coastal flooding in lowest elevation parts of the Florida Keys occurred initially with storm surge around
1.5 feet MHHW along the oceanside of the Florida Keys accompanied by heavy wave action with coastal
flooding across eastern Florida Bay.
October 9,2024—Hurricane Milton moved northeast across the eastern Gulf of Mexico, gradually
weakening from category 5 to category 4 strength while passing, at the closest approach, about 180 statue
miles to the northwest of Key West. Widespread lower-end tropical storm force winds overspread the
Lower Florida Keys and its adjacent coastal waters producing isolated large tree limb and utility line
damage. Coastal flooding in lowest elevation parts of the Florida Keys occurred initially with storm surge
around 1.5 feet MHHW along the oceanside of the Florida Keys accompanied by heavy wave action on,
with storm surge in Gulfside and Florida Bayside. The highest storm surge values near 3.0 feet above
MHHW occurred in Key Largo along Blackwater Sound. One tornado was observed as a waterspout
moved ashore the far southwest portion of Key West.
November 6,2024—The center of Hurricane Rafael passed 125 miles southwest of Key West as a
category 2 hurricane. Lower-end tropical storm force winds impacted portions of the Lower Florida Keys
producing isolated small tree limb damage. Minor coastal flooding and Atlantic-side wave overwash
occurred in Key West. Brief street flooding occurred in Key West due to brief,heavy squalls from outer
rainbands mainly impacted the Lower Florida Keys. Minor coastal flooding also occurred in Stock Island,
and Boca Chica Key with water levels reaching near 1.2 feet above mean higher high water(MHHW).
Minor street flooding occurred along with a temporary closure of State Road A 1 A(South Roosevelt
Boulevard) in Key West within an ongoing construction zone.
C
Florida has over 8,000 miles of coastline that often gets hit by direct storms. The state is very vulnerable
to the impacts of hurricanes and tropical storms as detailed in this section. Substantial hurricane damage
is typically most likely to be expected in the coastal counties of the state; however,hurricane and tropical
storm-force winds have significantly impacted areas far inland.
Figure 4.32 shows, for any location, the chance of a hurricane or tropical storm affecting the area
sometime during the Atlantic hurricane season. The figure was created by the National Oceanic and
Atmospheric Administration's(NOAA) Hurricane Research Division, using data from 1944 to 1999. The
figure shows the number of times a storm or hurricane was located within approximately 100 miles (165
kilometers) of a given spot in the Atlantic basin. Per this data,there has historically been approximately a
42%-48% chance of a hurricane occurring in Monroe County in any given year.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
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In the 24-year period from 2000 through 2024,28 hurricanes and tropical storm have impacted Monroe
County, which equates to over 100 percent annual probability of hurricane winds impacting the planning
area in any given year. This probability does not account for impacts from hurricane rains or storm surge,
which may also be severe. The probability of a hurricane or tropical storm impacting Monroe County is
highly likely.
Probability: 4—Highly Likely
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Monroe County's coastal location makes it a prime target for hurricane landfalls and changing climate
and weather conditions may increase the number and frequency of future hurricane events. Hurricanes
and other coastal storms may result in increased flooding, injuries,deaths, and extreme property loss.
According to the US Government Accountability Office,national storm losses from changing frequency
and intensity of storms is projected to increase anywhere from$4-6 billion in the near future.
According to NOAA,weather extremes will likely cause more frequent, stronger storms in the future due
to rising surface temperatures.NOAA models predict that while there may be less frequent, low-category
storm events (Tropical Storms, Category 1 Hurricanes),there will be more, high-category storm events
(Category 4 and 5 Hurricanes)in the future. This means that there may be fewer hurricanes overall in any
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
given year,but when hurricanes do form,it is more likely that they will become large storms that can
create massive damage.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Monroe County Emergency Management employs Alert!Monroe mass notification system to share
emergency notifications with residents quickly. Messages are pushed out to residents on preferred
primary and secondary contact paths, including cell phone, SMS/text,home phone, or email. Residents
listed in public phonebook databases are automatically subscribed,but the County encourages residents to
self-register cell phones and emails. The system can provide alerts to all users in the County as well as
tailored information to specific geographical areas and neighborhoods.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
EVACUATION
Per Monroe County `s 2022 Comprehensive Emergency Management Plan,the County is the most
vulnerable area in the United States to the threat of tropical cyclones. The low-lying islands that make up
the Florida Keys are connected by 42 bridges and one single thoroughfare, the Overseas Highway or U.S.
1. For these reasons, an evacuation plan is especially necessary. The county has five main evacuation
obj ectives:
— Return of non-residents to the mainland;
— Promote early voluntary evacuation;
— Relocate vulnerable populations;
— Selective evacuation of specific zones; and
— Phased, general evacuation to mainland.
Various factors are considered when the Director of Emergency Management decides to implement a
mandatory phased evacuation and how far in advance to do so. Historic trends illustrate base clearance
times for evacuating the keys ranges from 24 to 48 hours, with a minimum of 12 hours and a maximum of
30-plus hours. Another factor to consider is the time of year based on population changes due to tourism.
For Tropical Storms and Category 1 and 2 hurricanes, all visitors will be asked to evacuate out of the
County, Special Needs residents will be transported to an in-county shelter or out of the County to the
Monroe County shelter at Florida International University, and mobile home residents will either be
sheltered in-county or asked to evacuate. For a category 3 storm or greater, a phased evacuation is
implemented, including all visitors, hospitals, special needs residents, and the general population. The
evacuation timeline is as follows:
Approximately 48 hours in advance of tropical storm winds,mandatory evacuation is initiated for non-
residents, visitors,recreational vehicles,travel trailers, live-aboards, and military personnel.
Approximately 36 hours in advance of tropical storm winds,mandatory evacuation is initiated for mobile
home residents, special needs residents, and hospital and nursing home patients.
Approximately 24 to 30 hours in advance of tropical storm winds,mandatory phased evacuation of
permanent residents is initiated.
The phased evacuation is accomplished through the determination of zones. The five zones, as seen in
Figure 4.33, allow for selective evacuation,phased evacuation, and in-county shelter options. The five
zones are as follows:
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Zone 1: City of Key West, including Stock Island and Key Haven,to the Boca Chica Bridge (U.S. 1 Mile
Marker(MM) 1 —MM 6)
Zone 2: Boca Chica Bridge to the west edge of the 7-Mile Bridge(MM6-MM40)
Zone 3: West end of the 7-Mile Bridge to the end of Long Key Bridge (MM40-MM63)
Zone 4: West end of the Long Key Bridge to the confluence of CR 905 and 905A(3-way stop) (MM63-
MM106)
Zone 5: CR 905A to and including Ocean Reef(MM 106-MM 126.5)
Although mainland Monroe is not heavily populated,National Parks Services employees and their
families who reside there, and the Native American population,which occupies their trial land would
evacuate to hurricane rated hotels,motels, or to the facility designated for hurricane shelter at Flamingo
Park. Private residents would evacuate to Miami-Dade shelters. The sequence of the evacuation by zone
may vary by individual storms. This evacuation plan applies to all municipalities to ensure safety of all
county residents.
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PEOPLE
Children, elderly, individuals with disabilities, and others who may have difficulty evacuating are
especially vulnerable to harm from hurricanes. For those who are unable to evacuate for medical reasons,
there should be provision to take care of special-needs patients and those in hospitals and nursing homes.
Many of these patients are either oxygen-dependent, insulin-dependent, or in need of intensive medical
care. There is a need to provide ongoing treatment for these vulnerable citizens, either on the coast or by
air evacuation to upland hospitals. The stress from disasters such as a hurricane can result in immediate
and long-term physical and emotional health problems among victims.
Individuals in mobile homes are more vulnerable to hurricane winds, especially if their unit does not have
tie downs and other wind safety measures. This is further evidenced by Monroe County's emphasis on
evacuating manufactured home residents. Overall,there are 4,696 mobile home units in Monroe County,
making up almost 9 percent of the County's total housing stock. Over 12 percent of the housing stock in
Marathon is mobile home units. Additionally,there are over 3,300 mobile home units in unincorporated
Monroe County, again making up close to 13 percent of the total housing stock. These communities may
face more severe impacts from hurricane events as a result. Table 4.51 shows mobile home units by
jurisdiction.
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Total Housing Mobile Home Units,
Jurisdiction Units Mobile Home Units Percent of Total
City of Key Colony Beach 1,132 0 0%
City of Key West 14,414 330 2.3%
City of Layton 181 2 1.1%
City of Marathon 6,442 781 12.1%
Village of Islamorada 5,993 208 3.5%
Unincorporated Monroe County 26,256 3,375 12.9%
Total 549418 4,696 8.6%
Source:American Community Survey 5-Year Estimates,2023
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The Hazus analyses performed for this vulnerability assessment estimate the number of households that
are expected to be displaced from their homes due to various hurricane risks as well as the number of
displaced people that will require accommodations in temporary public shelters. Table 4.52 below
summarizes shelter needs for a storm event similar to Hurricane Irma, as well as probabilistic 50-, 100-,
and 500-year hurricane events.
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Displaced Residents in Need of Temporary
Event Type Households Shelter
Hurricane Irma Equivalent 1,714 1,157
50-year hurricane event 4,298 2,767
100-year hurricane event 7,189 5,125
500-year hurricane event 17,679 13,158
Source:Hazus
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PROPERTY
General damages to property are both direct(what the winds associated with hurricanes physically
destroy) and indirect,which focuses on additional costs, damages and losses attributed to secondary
hazards spawned by the hurricane, or due to the damages caused by the storm. Depending on the size and
strength of the hurricane, associated winds are capable of damaging and eventually destroying almost
anything. Construction practices and building codes can help maximize structures' resistance to damage.
Secondary impacts of damage due to hurricane winds often result from damage to infrastructure. Downed
power and communications transmission lines, coupled with disruptions to transportation, create
difficulties in reporting and responding to emergencies. These impacts of a hurricane put tremendous
strain on a community. In the immediate aftermath of a hurricane,the focus is on emergency services.
Two Hazus level 1 analyses were used to determine hurricane risk. The first simulated the wind losses
experienced during Hurricane Irma in 2017. The second was based on probabilistic parameters for the 50-
year, 100-year, and 500-year return periods. This analysis produced estimates of the likelihood of varying
levels of damage as well as building-related economic losses.Note that Hazus only assesses hurricane
wind and does not account for any other hazards associated with hurricane.
Table 4.53 provides the likelihood of damage at varying levels of severity by occupancy type expected for
a storm of magnitude similar to Hurricane Irma(2017). Table 4.54 provides the likelihood of damage at
varying levels of severity by occupancy type during three probabilistic hurricane events-a 50-year, 100-
year, and 500-year return period. During an event of magnitude similar to Hurricane Irma's,more than
44%of buildings in the County are estimated to potentially sustain damages. 30%, 80%, and 72% of
buildings in the county are likely to sustain damage during the 50-year, 100-year, and 500-year return
period events, respectively.
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Buildings Likelihood of Damage(%)
Occupancy at Risk Value at Risk None Minor Moderate Severe Destruction
Agriculture 89 $31,508,000 54.39% 18.79% 14.16% 9.99% 2.66%
Commercial 5,898 $3,957,651,000 56.38% 15.70% 16.80% 10.73% 0.38%
Education 74 $$377,278,000 55.03% 16.52% 20.71% 7.69% 0.05%
Government 168 $237,917,000 44.07% 17.27% 26.81% 11.80% 0.04%
Industrial 1,088 $1,434,668,000 52.58% 14.82% 15.98% 15.23% 1.38%
Religion 235 $227,602,000 54.86% 20.06% 16.22% 8.80% 0.07%
Residential 38,080 $11,813,847,000 55.16% 23.11% 14.60% 4.71% 2.41%
Total 45,632 $18,080,471,000 55.22% 21.90% 14.98% 5.80% 2.10%
Source:Hazus
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Buildings Likelihood of Damage(%)
Occupancy at Risk Value at Risk None I Minor TModerate Severe Destruction
50-year Hurricane Event
Agriculture 89 $31,508,000 69.80% 5.42% 6.36% 11.73% 6.69%
Commercial 5,898 $3,957,651,000 71.39% 5.56% 7.34% 13.25% 2.45%
Education 74 $$377,278,000 75.18% 3.69% 7.22% 11.95% 1.96%
Government 168 $237,917,000 77.05% 4.36% 5.60% 12.20% 0.78%
Industrial 1,088 $1,434,668,000 71.72% 4.69% 6.25% 12.95% 4.39%
Religion 235 $227,602,000 73.84% 5.75% 5.88% 12.97% 1.57%
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Buildings Likelihood of Damage(%)
Occupancy at Risk Value at Risk None Minor Moderate Severe Destruction
Residential 38,080 $11,813,847,000 69.21% 8.38% 7.04% 7.90% 7.47%
Total 45,632 $189080,471,000 69.61% 7.88% 7.05% 8.76% 6.68%
100-year Hurricane Event
Agriculture 89 $31,508,000 18.74% 22.71% 27.12% 23.09% 8.34%
Commercial 5,898 $3,957,651,000 20.45% 19.49% 29.37% 28.72% 1.97%
Education 74 $$377,278,000 18.30% 17.67% 35.09% 28.44% 0.50%
Government 168 $237,917,000 13.21% 13.68% 35.43% 37.08% 0.59%
Industrial 1,088 $1,434,668,000 17.64% 16.02% 25.47% 35.21% 5.65%
Religion 235 $227,602,000 18.77% 21.86% 29.37% 29.11% 0.89%
Residential 38,080 $11,813,847,000 19.37% 28.17% 27.93% 15.92% 8.60%
Total 45,632 $18,08094719000 19.44% 26.65% 28.10% 18.21% 7.59%
500-year Hurricane Event
Agriculture 89 $31,508,000 27.11% 9.54% 17.77% 28.00% 17.59%
Commercial 5,898 $3,957,651,000 27.10% 8.32% 16.78% 40.30% 7.50%
Education 74 $$377,278,000 22.15% 7.87% 17.17% 48.87% 3.94%
Government 168 $237,917,000 13.80% 6.39% 18.07% 58.07% 3.66%
Industrial 1,088 $1,434,668,000 23.17% 6.76% 15.15% 40.95% 13.97%
Religion 235 $227,602,000 22.18% 8.98% 18.76% 43.75% 6.32%
Residential 38,080 $11,813,847,000 27.82% 10.52% 16.38% 24.52% 20.77%
Total 45,632 $181080,471,000 27.52% 10.11% 16.42% 27.21% 18.72%
Source:Hazus
Table 4.55 details estimated property damages from a replication of Hurricane Irma by occupancy type.
Table 4.56 details estimated property damages from the 50-year, 100-year, and 200-year hurricane wind
events by occupancy type.
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Area Residential Commercial Industrial Others Total
Hurricane Irma(2017)Replication
Building $791,379,520 $223,635,050 $117,403,650 $48,198,950 $1,180,617,160
Content $257,437,070 $129,094,620 $107,508,030 $28,535,190 $522,574,920
Inventory $0 $16,208,600 $17,148,900 $893,830 $34,251,330
Total $1,048,8161,590 $368,938,270 $24,206,0581000 $77,627,980 $11,7371,443,410
Source:Hazus
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Area Residential Commercial Industrial Others Total
50-year Hurricane Event
Building $1,689,481,300 $356,913,000 $129,336,880 $89,638,610 $2,265,370,700
Content $695,671,000 $293,778,560 $147,599,090 $78,771,200 $1,215,819,850
Inventory $0 $35,745,360 $22,692,650 $2,250,750 $60,688,760
Total $2,385,152,310 $686,437,820 $299,628,620 $170,660,560 $31,541,879,320
100-year Hurricane Event
Building $2,499,949,700 $695,501,390 $344,514,630 $155,771,150 $3,695,736,870
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Area Residential Commercial Industrial Others Total
Content $939,557,070 $457,243,510 $350,220,580 $109,328,370 $1,856,349,530
Inventory $0 $59,891,180 $55,520,810 $3,096,140 $118,508,130
Total $394391,506,770 $1,212,6369080 $7509256,020 $26891959670 $5,670,594,530
500-year Hurricane Event
Building $4,338,205,980 $1,347,834,130 $604,597,740 $306,303,630 $6,596,941,480
Content $1,815,025,590 $1,056,430,690 $687,184,050 $257,364,380 $3,816,004,720
Inventory $0 $134,564,930 $107,102,630 $6,035,430 $247,703,000
Total $69153,2311,580 $29538,829,750 $1,398,884,430 $569,703,450 $10,660p6499210
Source:Hazus
Estimated property damages for an event similar to Hurricane Irma(2017)total $1,737,443,410 according
to this Hazus level 1 analysis. This equates to a loss ratio of 9.6 percent. Estimated losses for a 50-year,
100-year, and 500-year probabilistic wind event total $3,541,879,320, $5,670,594,530, and
$10,660,649,210,respectively; this equates to a loss ratio of 20 percent for a 50-year event, 31 percent for
a 100-year event, and 59 percent for a 500-year return period event. These loss ratios are determined by
dividing total estimated losses (from Table 4.55 and Table 4.56)by the total value at risk in the county
(from Table 4.53 and Table 4.54). Estimates from a Hazus level 1 analysis use 2018 ACS 1-year
estimates; actual losses or loss ratios may be higher depending on development changes in recent years.
FEMA considers a loss ratio of 10 percent or more to be an indicator that a community will have
significant difficulty recovering from an event. The 50-year, 100-year, or 500-year event will cause
significant difficulties for recovery. Damages from an actual hurricane event would likely also involve
storm surge and flood impacts that would raise the damage total. Therefore, even a 100-year hurricane
event may cause more serious damages that what is reported here from Hazus. Table 4.57 below
summarizes the number of buildings impacted by 100yr and 500 yr storm surge events. Buildings are
counted only once for the lowest category storm they will be affected by; it can be assumed that a
building affected by storm surge associated a 100yr event will also be impacted by a 500yr storm surge
event.
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Occupancy Estimated Structure Value Estimated Total Value
Building Count Content Value
100yr Event 489524 $2394559250,646 $131,869,6819211 $37,324,931,858
Agriculture 1 $267,735 $267,735 $535,470
Commercial 4,221 $3,160,987,416 $3,160,987,416 $6,321,974,832
Education 59 $39,541,055 $39,541,055 $79,082,110
Government 1,490 $697,950,350 $697,950,350 $1,395,900,700
Industrial 456 $157,650,870 $236,476,305 $394,127,176
Religious 128 $70,063,480 $70,063,480 $140,126,961
Residential 42,169 $19,328,789,740 $9,664,394,870 $28,993,184,609
500yr Event 19689 $7509158,690 $512,936,550 $1,263,0959240
Agriculture 0 $0 $0 $0
Commercial 325 $189,452,819 $189,452,819 $378,905,638
Education 2 $2,320,805 $2,320,805 $4,641,610
Government 43 $71,480,016 $71,480,016 $142,960,033
Industrial 7 $2,453,522 $3,680,283 $6,133,805
Religious 8 $7,553,727 $7,553,727 $15,107,453
Residential 1,304 $476,897,801 $238,448,900 $715,346,701
Total 50,213 $24,205,409,336 $14,382,617,762 $38,588,027,098
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Due to the limitations of a Hazus level 1 analysis, damage estimates for critical facilities could not be
calculated. Critical infrastructure, including the Keys' energy transmission pipelines, could also be
impacted by hurricane winds. Given equal vulnerability to hurricane winds across all of Monroe County,
all critical facilities are considered to be at risk. Certain buildings may perform better than others based on
their age and construction, among other factors. Depending on their locations, critical facilities may also
be at risk to storm surge flooding. Table 4.58 below provides counts for the number of critical facilities at
risk to the 100yr and 500yr storm surge event. Based on these results, 94 percent of the assessed facilities
are exposed to one storm surge.
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Facility Type Total Facilities at Risk
100yr Storm Surge 378
Communications 25
Energy 17
Food, Hydration,Shelter 40
Hazardous Materials 1
Health and Medical 20
Safety and Security 73
Transportation 5
Water Systems 197
500yr Storm Surge 27
Communications -
Energy 5
Food, Hydration,Shelter 5
Hazardous Materials -
Health and Medical 1
Safety and Security 12
Transportation -
Water Systems 4
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ESTINIATED DEBRIS CDJENEPATIOIV
Hazus estimates the total amount of debris that will be generated by a hurricane,breaking the debris down
into four general categories: Brick/Wood, Reinforce Concrete/Steel, Eligible Tree Debris, and Other Tree
Debris. Hazus also estimates the number of trucks needed to remove the building debris, assuming 25
tons of debris per truck. Table 4.59 summarizes debris and trucks needed by storm event.
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Tree Debris Building
Eligible Other Brick/ Concrete/ Debris
Event Type Wood Steel Total Truckloads
Hurricane Irma Equivalent 2,847 65,997 1277502 5,110 201,456 5,304
50-year hurricane event 4,280 91,601 280,534 25,984 402,399 12,261
100-year hurricane event 5,242 70,989 406,490 24,036 506,757 17,221
500-year hurricane event 4,711 41,609 758,970 55,368 860,658 32,574
Source:Hazus
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ECONOMY
The disruption of the local economy is an anticipated consequence of hurricanes that directly effects
Monroe County. Beyond debris generation and destruction of property that require monetary inputs to
haul away and rebuild, hurricanes and tropical storms have other significant impacts on the Monroe
County economy. The primary industries in the Keys—retail, service,tourism, and fishing—are all likely
to be negatively impacted by a hurricane or tropical storm. Any event causing visitors to stay away would
result in losses to local businesses as well as tax revenue for the local economy. Any event that causes a
power outage or damage to U.S. 1 is likely to have such impacts on tourism. Further, it has been noted
that the perception of damage that lingers after recovery period may continue to keep visitors away.
Additionally, the fishing industry would suffer from loss of power(for ice production), loss of
communication infrastructure, and damage to U.S. 1 (transport to the mainland.
Hazus reports the business interruption losses for a Hurricane Irma equivalent as well as a 50-, 100-, and
500-year probabilistic hurricane wind event as follows:
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Business
Interruption Residential Commercial Industrial Others Total
Hurricane Irma Equivalent
Income $3,436,900 $89,815,800 $1,572,120 $826,360 $95,651,180
Relocation $90,981,700 $34,906,000 $7,226,720 $10,545,290 $143,659,710
Rental Income $51,899,210 $22,355,240 $1,624,670 $1,621,630 $77,500,760
Wage $8,096,770 $77,502,020 $2,602,340 $6,334,190 $94,535,330
Total $15494149580 $22495799060 $1390259860 $199327,470 $411,346,970
50-year Hurricane Event
Income $21,878,560 $117,184,980 $1,536,580 $1,016,790 $141,616,910
Relocation $155,300,440 $44,346,270 $5,532,750 $12,802,390 $217,981,850
Rental Income $96,823,590 $29,766,300 $1,478,970 $1,287,130 $129,355,990
Wage $51,522,110 $109,657,080 $2,543,240 $6,617,800 $170,340,230
Total $32595249690 $30099549630 $1190919540 $21,724,110 $659,294,980
100-year Hurricane Event
Income $23,784,240 $285,505,320 $4,342,860 $1,374,520 $315,006,930
Relocation $259,353,820 $99,128,960 $17,273,860 $29,934,620 $405,691,240
Rental Income $165,268,280 $66,216,650 $4,502,330 $4,649,470 $240,636,730
Wage $56,030,010 $251,959,670 $7,196,040 $10,160,310 $325,346,030
Total $504,436,340 $702,810,600 $33,315,080 $46,1189920 $1,286,6809940
500-year Hurricane Event
Income $64,787,890 $522,325,220 $7,601,500 $3,061,180 $597,775,790
Relocation $384,432,210 $164,118,790 $24,645,670 $50,306,670 $623,503,340
Rental Income $279,299,610 $115,319,720 $7,201,580 $8,435,510 $410,256,430
Wage $152,626,150 $461,891,130 $12,626,530 $22,257,810 $649,401,630
Total $881,145,870 $1,263,654,860 $52,075,290 $84,061,180 $2,280,937,190
Source:Hazus
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ENVIRONMENT
Hurricane winds can cause massive damage to the natural environment,uprooting trees and other debris
within the storm's path. Animals can either be killed directly by the storm or impacted indirectly through
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changes in habitat and food availability caused by high winds and intense rainfall. Endangered species
can be dramatically impacted. Forests can be completely defoliated by strong winds.
Although South Florida ecosystems have adapted to episodic massive disturbances such as hurricanes,the
growth of urban environments have altered the natural ecology and thus the ability for those ecosystems
to respond and recover from these events. In the Keys,the predominantly coastal floodplain serves
different functions than a traditional floodplain and responds to disturbances differently. Although
hurricanes are necessary and natural occurrences for the maintenance of the unique natural environment,
they can still cause significant damage.
The mangroves, which provide protective buffers from wind and storm surge,marshes,pine rockland
forests,hardwood hammocks, and reef systems are all important parts of this unique natural environment.
Many of these features have suffered significant damage during prior hurricanes. During Hurricane
Andrew,many of the mangroves in Everglades National park were damaged; delayed mortality meant
this continued well past the end of the storm, a phenomenon that has been observed after prior storms as
well. After Hurricane Wilma, storm surge was especially detrimental to the pine rockland forest
throughout the Florida Keys National Wildlife Refuge.Additionally,virtually all pines on Cudj oe Key
were killed along with high mortality of young and mature trees on Big Pine, Sugarloaf, and Little Torch
Keys.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONSEQUENCE ANAL�SIS
Table 4.61 summarizes the potential negative consequences of hurricanes and tropical storms.
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Category Consequences
Pu bl is Impacts include injury or death, loss of property,outbreak of diseases,
mental trauma and loss of livelihoods. Power outages and flooding are likely
to displace people from their homes.Water can become polluted such that
if consumed,diseases and infection can be easily spread. Residential,
commercial,and public buildings,as well as critical infrastructure such as
transportation,water,energy,and communication systems may be
damaged or destroyed, resulting in cascading impacts on the public.
Responders Impacts to responders and response capabilities may occur during severe
storms. Localized impact expected to limit damage to personnel in the
inundation area at the time of the incident.
Continuity of Damage to facilities/personnel from wind or flooding may require
Operations(including temporary relocation of some operations.Operations may be interrupted by
Continued Delivery of power outages. Disruption of roads and/or utilities may postpone delivery of
Services) some services. Regulatory waivers may be needed locally. Fulfillment of
some contracts may be difficult. Impact may reduce deliveries.
Property, Facilities and Structural damage to buildings may occur; loss of glass windows and doors
Infrastructure by high winds and debris; loss of roof coverings, partial wall collapses,and
other damages requiring significant repairs are possible in a major(category
3 to 5) hurricane.
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Category Consequences
Environment Hurricanes can devastate wooded ecosystems and remove all the foliation
from forest canopies,and they can change habitats so drastically that the
indigenous animal populations suffer as a result. Specific foods can be
taken away as high winds will often strip fruits,seeds and berries from
bushes and trees.Secondary impacts may occur;for example, high winds
and debris may result in damage to an above-ground fuel tank, resulting in a
significant chemical spill.
Economic Condition of Local economy and finances adversely affected, possibly for an extended
the Jurisdiction period of time,depending on damages. Intangible impacts, including
business interruption and additional living expenses, may also occur.
Public Confidence in Public confidence may be affected by a major storm event requiring
the Jurisdiction's substantial response and long-term recovery effort.
Governance
Natural hazards are,more often than not, interconnected. Any given hazard may lead to, or be spurred by,
another hazard—sometimes referred to as cascading disasters. Tropical Cyclones may be associated with:
Storm Surge, Flood, Coastal Erosion, Sea Level Rise, and Tornado.
While increased development will not impact the incidence of hurricane wind, it will lead to more
exposure, which in turn may increase risk. This is especially true for mobile home development,which is
more at risk to wind. In Monroe County,mobile home development is limited by its ordinances—
particularly limiting new mobile homes to designated mobile home parks and dictate the height at which
these homes may be elevated. Like flooding, increased development will likely lead to increased
impervious surfaces,which could potentially increase the impacts and patterns of storm surge.
Because the County relies almost entirely on the Overseas Highway for evacuation purposes, any future
development will impact evacuation time. The County has implemented a Rate of Growth Ordinance for
both residential and non-residential development to keep evacuation time under 24 hours.
The evacuation of the Florida Keys occurs entirely on US Highway 1 —if this highway becomes
impassable due to rain or other roadblocks, evacuation will become increasingly difficult.
The County and participating jurisdictions must continue to prioritize vulnerable communities,including
keeping the special needs registry used during evacuations up to date. There is continued concern that
these groups may not respond to evacuation orders; transportation to the mainland is also a concern.
The County and jurisdictions rely on shelters on the mainland during evacuation times—availability of
shelter space within and outside of the County is a concern as the County and region grow.
Communities with greater shares of mobile home units—such as Marathon and Unincorporated Monroe
County—are more vulnerable to hurricane winds.
Visitors to Monroe County during the summer months may burden evacuation times.
The population of Monroe County increases during the late autumn and winter; late in hurricane season,
this increase in population may overburden the shelter capacity.
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The following table summarizes tropical cyclone hazard risk by jurisdiction. Due to its coastal geography,
the entire county is susceptible to the impacts of hurricanes,tropical storms, and the associated storm
surges and flooding. While hurricanes have the possibility of being catastrophic across all jurisdictions,
certain areas have higher vulnerability. Impacts may be greater in more highly developed areas with
greater amounts of impervious surface and higher exposure in terms of both property and population
density. Areas with more mobile homes are also more vulnerable to damage,while areas with higher
property values have greater overall exposure and potential for damages. Despite these differences, all
jurisdictions have the possibility for catastrophic impacts.
Spatial Warning
Jurisdiction Probability Impact Extent Time Duration Score Priority
Key Colony 4 4 4 1 3 3.6 H
Beach
Key West 4 4 4 1 3 3.6 H
Layton 4 4 4 1 3 3.6 H
Marathon 4 4 4 1 3 3.6 H
Islamorada 4 4 4 1 3 3.6 H
Unincorporated 4 4 4 1 3 3.6 H
Monroe County
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
WILDFIRE
1
Hazard Probability Impact Spatial Warning Time Duration PRI
Extent Score
Wildfire Likely Limited Small Less than 6 hrs Less than 1 week 2.
A wildfire is an uncontained fire that spreads through the environment. Wildfires can consume large
areas, including infrastructure,property, and resources. When massive fires, or conflagrations, develop
near populated areas, evacuations possibly ensue.Not only do the flames impact the environment,but the
massive volumes of smoke spread by certain atmospheric conditions also impact the health of nearby
populations. There are three general types of fire spread that are recognized.
— Ground fires—burn organic matter in the soil beneath surface litter and are sustained by glowing
combustion.
— Surface fires—spread with a flaming front and burn leaf litter, fallen branches and other fuels located
at ground level.
— Crown fires—burn through the top layer of foliage on a tree,known as the canopy or crown fires.
Crown fires, the most intense type of fire and often the most difficult to contain, need strong winds,
steep slopes and a heavy fuel load to continue burning.
Fuels to wildfires are subject to a variety of ignition sources,both natural and human caused. Generally,
wildfires are started by humans, either through arson or carelessness. Fire intensity is controlled by both
short-term weather conditions and longer-term vegetation conditions. During intense fires,understory
vegetation, such as leaves, small branches, and other organic materials that accumulate on the ground, can
become additional fuel for the fire. The most explosive conditions occur when dry,gusty winds blow
across dry vegetation. Historically, fire starts have been contained quickly with minimal loss to property
and structures.
Weather plays a major role in the birth, growth and death of a wildfire. Weather conditions favorable to
wildfire include drought,which increases flammability of surface fuels, and winds,which aid a wildfire `s
progress. The combination of wind,temperature, and humidity affects how fast wildland fires can spread.
Rapid response can contain wildfires and limit their threat to property. In support of forecasting for fire
weather,the National Weather Service Fire Weather Program emerged. This service is provided to federal
and state land management agencies for the prevention, suppression, and management of forest and
rangeland fires.
Monroe County experiences a variety of wildfire conditions found in the Keetch-Byram Drought Index,
which is described in Table 4.62. The Keetch-Byram Drought Index(KBDI) for February 26, 2025, is
shown in Figure 4.34. The KBDI for Monroe County and the surrounding areas at this time was between
200 and 400.
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KBDI Description
0-200 Soil and fuel moisture are high. Most fuels will not readily ignite or burn. However,with
enough sunlight and wind,cured grasses and some light surface fuels will burn in sports and
patches.
200- Fires more readily burn and will carry across an area with no gaps. Heavier fuels will still not
400 readily ignite and burn.Also,expect smoldering and the resulting smoke to carry into and
possibly through the night.
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KBDI Description
400- Fire intensity begins to significantly increase. Fires will readily burn in all directions exposing
600 mineral soils in some locations. Larger fuels may burn or smolder for several days creating
possible smoke and control problems.
600- Fires will burn to mineral soil.Stumps will burn to the end of underground roots and
800 spotting will be a major problem. Fires will burn through the night and heavier fuels will
actively burn and contribute to fire intensity.
Source:United State Forest Service Wildland Fire Assessment System
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Source:Florida Department of Agriculture and Consumer Services
Warning Time: 4—Less than 6 hours
Duration: 3—Less than I week
The location of wildfire risk can be defined by the acreage of Functional Wildland Urban Interface
(WUI). The Functional WUI is described as the classification of the land near buildings into zones that
describe the wildfire risk mitigation activities appropriate for each zone. Buildings used in producing the
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
Functional WUI are defined as greater than 40 square meters. There are five Functional WUI categories
recognized. There are five Functional WUI categories recognized.
— Direct Exposure: Burnable land cover within 75 m of a building. Buildings in this zone are exposed
to ignition from convective and radiative heat from a wildfire, embers, and adjacent burning
structures/outbuildings.
— Indirect Exposure: Nonburnable land cover within 75 m of a building and less than 1530 m from a
500-ha contiguous block of wildland fuel. Buildings in this zone are exposed to ignition from embers
and/or adjacent burning structures
— Critical Fireshed: The burnable land cover from which a wildfire can reach a significant number of
buildings within a single burning period.
— Little-to-no Exposure: Nonburnable land cover within 75 m of a building and more than 1530 m
from a 500-ha contiguous block of wildland fuel. Buildings in this zone are relatively safe from
ember ignition and building-to-building spread.
— Sources of Ember Load to Buildings: Burnable land cover more than 75 m from a building that
produces embers capable of reaching nearby buildings. Ember production is a function of fire type
and intensity; ember travel is a function of wind speed and direction. Ember modeling is based on fire
modeling based on gridded historical climatology.
The Southern Wildfire Risk Assessment(SWRA) estimates that 15 percent of Monroe County's
population lives within the critical fire shed and 1 percent live in direct exposure to the Functional WUI.
The expansion of residential development from urban centers out into rural landscapes increases the
potential for wildland fire threat to public safety and the potential for damage to forest resources and
dependent industries. Population growth within the WLJI substantially increases the risk of wildfire.
Spatial Extent: 3—Moderate
Table 4.63 details the extent of the Functional WUI in Monroe County, and Figure 4.35 maps the WUI in
Monroe County.
Table 4.63-Wildland Urban Interface,Population and Acres
milli 1�
Direct Exposure 4,874 1%
Indirect Exposure 6,518 2%
Critical Fireshed 48,772 15%
Sources of Ember Load to Buildings 11,071 3%
Little to No Exposure 11,026 3%
Water 251,593 75%
Source:Southern Wildfire Risk Assessment
Per the County CEMP and prior LMS,areas more susceptible to wildfire in Monroe County include
Everglades National Park on the Mainland, and Big Pine,No Name, Cudjoe,and Sugarloaf Keys in the
Lower Keys where there are remnant tracts of Native Pine Rockland Forest. In fact,the largest contiguous
block of vegetation in the Lower Keys is 500 acres on Big Pine Key. The County is part of the Everglades
District of the Florida Fire Service, which also Includes Broward,Palm Beach, and Miami-Dade
Counties.
Spatial Extent: 2—Small
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 178
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
EXTENT
Wildfire extent can be defined by the fire's intensity and measured by the Characteristic Fire Intensity
Scale,which identifies areas where significant fuel hazards which could produce dangerous fires exist.
Fire Intensity ratings identify where significant fuel hazards and dangerous fire behavior potential exist
based on fuels, topography,and a weighted average of four percentile weather categories. The Fire
Intensity Scale consists of five classes, as defined by Southern Wildfire Risk Assessment and is shown in
Table 4.64. Table 4.65 and Figure 4.36 show the potential fire intensity within the WLTI across Monroe
County. Detailed maps of fire intensity by jurisdiction are provided in each community's annex.
Table 4.64-Fire Intensity Scale
Class Description
1,Very Low Very small,discontinuous flames,usually less than 1 foot in length;very low rate of
spread;no spotting. Fires are typically easy to suppress by firefighters with basic
training and non-specialized equipment.
2,Low Small flames,usually less than two feet long;small amount of very short-range spotting
possible. Fires are easy to suppress by trained firefighters with protective equipment
and specialized tools.
3,Moderate Flames up to 8 feet in length;short-range spotting is possible. Trained firefighters will
find these fires difficult to suppress without support from aircraft or engines, but dozer
and plows are generally effective. Increasing potential for harm or damage to life and
property.
49 High Large Flames,up to 30 feet in length;short-range spotting common; medium range
spotting possible. Direct attack by trained firefighters,engines,and dozers is generally
ineffective,indirect attack may be effective. Significant potential for harm or damage
to life and property.
5,Very High Very large flames up to 150 feet in length; profuse short-range spotting,frequent long-
range spotting;strong fire-induced winds. Indirect attack marginally effective at the
head of the fire. Great potential for harm or damage to life and property.
Source:Southern Wildfire Risk Assessment
Table 4.65-Characteristic Fire Intensity,Monroe County
UNRUH
0 273,776 31%
1 32,325 4%
1.5 10,160 1%
2 127,534 14%
2.5 170,286 19%
3 6,039 1%
3.5 8,213 1%
4 31,741 4%
4.5 220,778 25%
5 0 0%
>5 0 0%
Source:Southern Wildfire Risk Assessment
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 100
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Per the Southern Wildfire Risk Assessment, 31 percent of Monroe County is non-burnable.Note that this
includes areas of the County that are open water. A significant portion of the land area, approximately 29
percent, of Monroe County may experience a Class 4 or higher Fire Intensity, which poses significant
harm or damage to life and property. However,the areas with greatest potential fire intensity are largely
outside the WUI-including Everglades National Park. Potential fire intensity is also high on Big Pine
Key. Approximately 2 percent of the county may experience Class 3 or 3.5 Fire Intensity,which has
potential for harm to life and property but is easier to suppress with dozer and plows. The remainder of
the burnable area(approximately 38 percent)would face a Class 1 or Class 2 Fire Intensity,which are
easily suppressed.
Florida participates in the national Ready, Set, Go! program which helps prepare first responders to best
address wildfires when they occur. This program is also used as outreach to help citizens understand their
risk and how to be prepared. As part of this program,the State produced a Wildfire Mitigation Plan.
Monroe County has addressed fire hazards in their County Emergency Management Plan; however, it is
considered a minimal threat.
Impact: 2-Limited
NCEI does not report any records of wildfire in Monroe County within the 25-year period from 2000
through 2024. However,the Florida Department of Agriculture and Consumer Services maintains records
of acreage burned and number of fires within the State of Florida. According to this department, there
were 167 fires between January 1 St, 2000 and December 31 St, 2024, averaging 6.7 fires per year. However,
these fires burned only 186.8 acres in total, averaging 1.12 acres per fire. Table 4.66 lists fires and
acreage burned by year.
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Avg.
Year Number Acres Acres
of Fires Burned
Burned
2000 14 4.5 0.32
2001 40 22.5 0.56
2002 32 4.4 0.14
2003 14 54.1 3.86
2004 10 3.3 0.33
2005 5 3.4 0.68
2006 6 1.4 0.23
2007 6 12.3 2.05
2008 5 1.6 0.32
2009 4 2.2 0.55
2010 4 0.4 0.10
2011 7 1.2 0.17
2012 1 0.1 0.10
2013 3 0.5 0.17
2014 7 1.6 0.23
2015 3 0.6 0.20
2016 1 0.1 0.10
2017 2 0.2 0.10
2018 2 72.1 36.05
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Avg.
Year Number Acres Acres
of Fires Burned
Burned
2019 1 0.3 0.30
2020 0 0 0
2021 0 0 0
2022 0 0 0
2023 0 0 0
2024 0 0 0
Total 167 186.8 1.12
Source:Florida Forest Service Reporting System:Fires by Causes
Two notable fires explain some of the variation in average acreage burned in the table above.
Thunderstruck Fire: In 2007,the Thunderstruck Fire burned 7 acres on Big Pine Key, affecting vacant
property adjacent to residential and commercial structures. The Florida Division of Forestry brought in
resources from Miami to assist in controlling the fire. The U.S. Fish and Wildlife Service provided
helicopter water drops to help control the fire spread. During this event, firefighters from several stations
worked in yards of homes and several businesses to prevent damage. Flame lengths exceeded thirty feet,
and nearly all the vegetation was killed as a result of severity and intensity.
Big Pine Key Brush Fire: The Big Pine Key Brush Fire began around 2pm on April 22, 2018 in a
wooded area on Big Pine Key. Due to strong winds and dry conditions,the fire spread quickly and burned
a total of 72 acres. Due to a quick,unified response from 10 different agencies, including Monroe County
Emergency Services,Florida Forest Service,the U.S. Fish and Wildlife Service and others from Key
West to Georgia, only one home and an associated detached garage were destroyed, and 30 other homes
were saved in the burn area. There were no reported injuries or loss of life. With help from 1.7 inches of
rain recorded at the Big Pine Key Forestry site on April 27th,which reduced heat in the fire's interior,the
fire was completely contained and put out by April 29th. Overall, 93 percent of the pine rock lands on Big
Pine Key were left unburned.
The State of Florida uses this Active Wildfires Dashboard to communicate to others where the currently
burning wildfires are located. At the time this data is collected,there are 3 active wildfires in the state of
Florida
The region experienced prolonged periods of moderate to severe drought in 2000 to 2001, 2007 to 2008,
2009,20111 2015,and 2018. These periods of drought may explain some of the annual variation in fires
and acreage burned.
The Southern Wildfire Risk Assessment provides a Burn Probability analysis which signifies the
likelihood of a wildfire burning a specific location within a set time frame - commonly represented as the
chance of burning during one calendar year or wildfire season. According to the SWRA, Burn Probability
can be expressed as a fraction(ex. 0.005) or odds (1-in-200) and is based on fire behavior modeling
across thousands of simulations of possible fire seasons. In each simulation, factors contributing to the
probability of a fire occurring, including weather and ignition likelihood are varied based on patterns
derived from observations in recent decades. It is not predictive and does not reflect any currently
forecasted weather or fire danger conditions. Burn Probability does not say anything about the intensity of
a fire if it occurs. The Burn Probability for Monroe County is presented in Table 4.67 and illustrated in
Figure 4.37.Note that approximately 30 percent of the land area in the County does not have a Burn
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Probability class assigned to it. The following table details the Burn Probability for the remaining area in
the county.
Table 4.67-Burn Probability,Monroe County
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>0-0.0001000 32,576 4%
0.0001000- 0.0002154 6,256 1%
0.0002154- 0.0004642 25,410 3%
0.0004642- 0.0010000 28,958 3%
0.0010000- 0.0021544 42,103 5%
0.0021544- 0.0046416 111287 13%
0.0046416- 0.0100000 96,178 11%
0.0100000- 0.0215443 87,185 10%
0.0215443- 0.0464159 181,532 21%
0.0464159- 0.1000000 5,270 1%
>0.10000000 0 0%
Source:Southern Wildfire Risk Assessment
Over 50 percent of Monroe County has a relatively moderate to high burn probability. The areas of higher
burn probability are located on the mainland of Monroe County in Everglades National Park. The Keys
themselves have a relatively low burn probability. The probability of wildfire across the county is
considered likely, defined as between a 10%and 100%annual chance of occurrence. The mainland
(Everglades National Park),and Big Pine Key are areas that have historically seen wildfire and area likely
to experience wildfire again due to their higher burn probability and potential fire intensity.
Probability: 3—Likely
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page184
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Climate change is expected to have far-reaching effects on various environmental processes, including the
frequency an intensity of extreme heat and drought events,both of which could profoundly influence
wildfire behavior. As global temperatures rise,the likelihood of more frequent and prolonged periods of
extreme heat increase,which can dry out vegetation, soil, and organic matter,making them more
susceptible to ignition. Additionally,the intensification of drought conditions means that water
availability for plants and ecosystems could become increasingly scarce, leading to a reduction in the
moisture content of vegetation, soils, and decomposing organic material, all of which play a critical tole
in wildfire dynamics. Moreover,the unpredictability of climate change means that both seasons could
become more extreme in their respective ways, amplifying the impacts on wildfire behavior.
ASS
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PEOP
LE
Wildfire pose significant risks to human life and health, causing fatalities, injuries, and long-term health
complications such as respiratory issues due to smoke inhalation. To mitigate these dangers,it is crucial
to implement comprehensive procedures for rapid warning and evacuation. Developing reliable early
warning systems that utilize satellite monitoring, drones, and weather forecasts can help alert
communities to emerging threats. Local authorities should communicate through various channels,
including SMS alerts, social media and community radio, to ensure that messages everyone effectively.
Effective communication and coordination among local fire departments, law enforcement, and
emergency management agencies are vital for an orderly and safe evacuation process. After evacuations,
providing support affected individuals and families is crucial,including access to medical care,mental
health services, and resources for rebuilding. Establishing community networks can further assist
residents during recovery.
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PROPERTY
Wildfire can lead to sustainable direct property losses, impacting buildings,vehicles, landscaped areas,
agricultural lands, and livestock. The destruction of homes and businesses not only results in financial
losses but can also displace families and disrupt communities. One effective approach to increasing fire
resistance is the use of fire-rated materials in construction such as non-combustible roofing, siding, and
decks, as well as tempered glass windows that can withstand high temperatures. Additionally,building
codes that require certain fire safety measures, such as proper ventilation and firebreaks, can further
protect properties from encroaching flames.
Landscaping practices are another vital element in reducing vulnerability to wildfires. By incorporating
fire-resistant plants and creating defensible space around properties typically a buffer zone that extends
at least 30 feet from structures homeowners can limit the flammability of their surroundings.
Techniques such as maintaining a green lawn,using gravel or stone mulch, and keeping trees trimmed can
minimize the potential for fire to spread to buildings.
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ENVIRONMENT
Wildfires have the potential to cause extensive damage to forest and forage resources, significantly
affecting both natural habitats and agricultural land. When a wildfire sweeps through a forest, it can
obliterate vast areas of vegetation, leading to loss of trees, shrubs, and underbrush that provide habitat for
wildlife. This destruction disrupts ecosystems, displacing animal species and impacting their food
sources.
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Additionally, wildfires can severely damage agricultural crops on private land. The intense heat and
smoke can harm plants,leading to reduced yields or complete crop failure. This not only affects farmers
economically but can also have broader implications for local and regional food supplies. The destruction
of crops can lead to higher food prices and food scarcity, impacting communities that depend on these
resources.
The recovery process can vary based on factors such as the severity of the fire,the type of ecosystem
affected, and climate conditions. In many cases,wildfires can lead to the growth of new, diverse plant
communities that enhance soil quality and increase habitat complexity. Additionally,the ash left behind
can provide essential nutrients that stimulate the growth of new vegetation.
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CONS EQLIENCE ANALYSIS
Table 4.68 summarizes the potential detrimental consequences of wildfire.
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Category Consequences
Public In addition to the potential for fatalities,wildfire and the resulting diminished
air quality pose health risks. Exposure to wildfire smoke can cause serious
health problems within a community,including asthma attacks and
pneumonia,and can worsen chronic heart and lung diseases.Vulnerable
populations include children,the elderly, people with respiratory problems or
with heart disease. Even healthy citizens may experience minor symptoms,
such as sore throats and itchy eyes.
Responders Public and firefighter safety is the first priority in all wildland fire
management activities. Wildfires are a real threat to the health and safety of
the emergency services. Most fire-fighters in rural areas are'retained'.This
means that they are part-time and can be called away from their normal
work to attend to fires.
Continuity of Wildfire events can result in a loss of power which may impact operations.
Operations(including Downed trees, power lines and damaged road conditions may prevent access
Continued Delivery of to critical facilities and/or emergency equipment.
Services)
Property, Facilities and Wildfires frequently damage community infrastructure, including roadways,
Infrastructure communication networks and facilities, power lines,and water distribution
systems. Restoring basic services is critical and a top priority. Efforts to restore
roadways include the costs of maintenance and damage assessment teams,
field data collection,and replacement or repair costs. Direct impacts to
municipal water supply may occur through contamination of ash and debris
during the fire,destruction of aboveground distribution lines,and soil erosion
or debris deposits into waterways after the fire. Utilities and communications
repairs are also necessary for equipment damaged by a fire.This includes
power lines,transformers,cell phone towers,and phone lines.
Environment Wildfires cause damage to the natural environment, killing vegetation and
animals.The risk of floods and debris flows increases after wildfires due to the
exposure of bare ground and the loss of vegetation. In addition,the
secondary effects of wildfires, including erosion,landslides, introduction of
invasive species,and changes in water quality,are often more disastrous than
the fire itself.
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Category Consequences
Economic Condition Wildfires can have significant short-term and long-term effects on the local
of the Jurisdiction economy. Wildfires,and extreme fire danger, may reduce recreation and
tourism in and near the fires. If aesthetics are impaired, local property values
can decline. Extensive fire damage to trees can significantly alter the timber
supply, both through a short-term surplus from timber salvage and a longer-
term decline while the trees regrow.Water supplies can be degraded by
post-fire erosion and stream sedimentation.
Public Confidence in Wildfire events may cause issues with public confidence because they have
the Jurisdiction's very visible impacts on the community. Public confidence in the jurisdiction's
Governance governance may be influenced by actions taken pre-disaster to mitigate and
prepare for impacts,including the amount of public education provided;
efforts to provide warning to residents; response actions;and speed and
effectiveness of recovery.
The following table summarizes wildfire hazard risk by jurisdiction. Wildfire warning time and duration
do not vary by jurisdiction. Spatial extent ratings were estimated based on the percentage of direct
exposure within the WUI;jurisdictions with approximately 10%to 50% of direct exposure were assigned
a spatial extent rating of 3. Impact ratings were based on fire intensity data from SWRA. Jurisdictions
with significant clusters of moderate to high fire intensity were assigned a rating of 3; all other
jurisdictions were assigned a rating of 2. Probability ratings were determined based on burn probability
data from SWRA. Only the unincorporated areas of the county have any areas with moderate to high burn
probability and was thus given a probability rating of 3. All other jurisdictions were assigned a probability
of 2.
Jurisdiction Probability Impact Spatial WarningDuration Score Priority
Extent Time
Key Colony
2 2 3 4 3 2.5 M
Beach
Key West 2 2 3 4 3 2.5 M
Layton 2 2 3 4 3 2.5 M
Marathon 2 3 3 4 3 2.8 M
Islamorada 2 3 3 4 3 2.8 M
Unincorporated
3 3 4 4 3 3.3 H
Monroe County
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Hazard Probability Impact Spatial Warning Time Duration PRI
Extent Score
Cyber Attack Possible Limited Small Less than 6 hrs More than 1 24
week
The State of Florida Hazard Mitigation Plan defines a cyber incident as "an incident involving computers,
networks, and information or services that affect daily operations of critical infrastructure,"noting that a
Cyber Incident can be either malicious or stem from a system glitch or human error. The SHMP defines a
cyber attack, then, as a cyber incident with malicious intent.
Cyber-attacks use malicious code to alter computer operations or data. The vulnerability of computer
systems to attacks is a growing concern as people and institutions become more dependent upon
networked technologies. The Federal Bureau of Investigation(FBI)reports that"cyber intrusions are
becoming more commonplace,more dangerous, and more sophisticated,"with implications for private-
and public-sector networks.
There are many types of cyber-attacks. Among the most common is a direct denial of service, or DDoS
attack. This is when a server or website will be queried or pinged rapidly with information requests,
overloading the system and causing it to crash.
Malware, or malicious software, can cause numerous problems once on a computer or network, from
taking control of users' machines to discreetly sending out confidential information. Ransomware is a
specific type of malware that blocks access to digital tiles and demands a payment to release them.
Hospitals, school districts, state and local governments, law enforcement agencies,businesses, and even
individuals can be targeted by ransomware.
Cyber spying or espionage is the act of illicitly obtaining intellectual property, government secrets, or
other confidential digital information, and often is associated with attacks carried out by professional
agents working on behalf of a foreign government or corporation. According to cybersecurity firm
Symantec, in 2016 "...the world of cyber espionage experienced a notable shift towards more overt
activity, designed to destabilize and disrupt targeted organizations and countries."
Major data breaches -when hackers gain access to large amounts of personal, sensitive, or confidential
information-have become increasingly common. The Symantec report says more than seven billion
identities have been exposed in data breaches over the last eight years. In addition to networked systems,
data breaches can occur due to the mishandling of external drives, as has been the case with losses of
some state employee data.
Cyber crime can refer to any of the above incidents when motivated primarily by financial gain or other
criminal intent.
The most severe type of attack is cyber terrorism, which aims to disrupt or damage systems in order to
cause fear, injury, and loss to advance a political agenda.
The State of Florida has several cyber security mechanisms. The Florida Computer Crime Center(FC3)
conducts cyber investigations,training,research, and prevention, and developed the Florida Infrastructure
Protection Center(FIPC). The FIPC was developed to anticipate,prevent,react to, and recover from acts
of terrorism, sabotage, and cyber Grim. One component of the FIPC is the Computer Incident Response
Team(CIRT)which is on-call to respond to critical cyber incidents in Florida. The Agency for State
Technology developed a Statewide Strategic Information Technology Security Plan to protect the
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confidentiality, integrity, and availability of the state's IT resources. FDEM also has a Cyber Incident
Plan.
Warning Time: 4—Less than six hours
Duration: 4—More than one week
Cyber disruption events can occur and/or impact virtually any location in the state where computing
devices are used. Incidents may involve a single location or multiple geographic areas.A disruption can
have far-reaching effects beyond the location of the targeted system; disruptions that occur far outside the
County can still impact people,businesses, and institutions within the County.
Spatial Extent: 2—Small
The extent or magnitude/severity of a Cyber disruption event is variable depending on the nature of the
event. A disruption affecting a small, isolated system could impact only a few functions/processes.
Disruptions of large, integrated systems could impact many functions/processes, as well as many
individuals that rely on those systems.
There is no universally accepted scale to quantify the severity of cyber-attacks. The strength of a DDoS
attack is sometimes explained in terms of a data transmission rate. One of the largest DDoS disruptions
ever, which brought down some of the internet's most popular sites on October 21, 2016,peaked at 1.2
terabytes per second.
Data breaches are often described in terms of the number of records or identities exposed.
The Florida State Hazard Mitigation Plan defines three levels of cyber-attacks:
Unstructured: attacks with little to no organization and no significant funding. Such attacks are usually
carried out by amateurs using pre-made tools to attack well known system flaws. These attacks are most
common,but are also easily spotted by network security
Structured: attacks with more organization and planning and decent financial backing. These attacks
have specific targets and intend to disrupt operations to a specific organization or sector. The impacts
might range from minimal to significant.
Highly Structured: attacks involve extensive organization,planning, and funding. Attackers conduct
reconnaissance and use multiple attacks to achieve their goals.
Impact: 2—Limited
The Privacy Rights Clearinghouse, a nonprofit organization based in San Diego,maintains an estimated
timeline of 17,552 unique data breaches, of which at least 7,130 were acts of computer hacking,in the
United States from 2005-2023. The database lists 700 total data breaches, including 330 hacking events in
Florida,totaling over 19.6 million records breached since 2005. Similarly, some residents in the region
were likely affected by national and international data breaches. Media reports indicate an uptick in
cyber-attacks across the state.
SecuLore also provides its own database of Cyber Attacks across the country via local media outlets,
broken down by state and infrastructure affected. Based on local media outlets,Monroe County has seen
the following four attacks:
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September 2018 (Education): The Monroe County School District was forced to shut down its computer
system for almost a week due to a cyber attack. The incident was first noticed by an employee who
contacted the IT department. The event was eventually escalated to the District's internet security
provider who advised securing and shutting down the entire system. The culprit was a ransomware called
"GandCrab."No data was threatened and no demands for ransom were actually made, as the district had
appropriately backed up its data. In order to reopen the system,the District had to rebuild each server
individually. The system was first up and running again after three days,but had to be shut down only an
hour later. It was then slowly restarted,but was delayed due to a cable and internet outage.
May through November 2018 (Education): The Florida Keys Community College (FKCC)reported of
suspicious activity,potentially phishing, on an employee's email account. An investigation into this
suspicious activity revealed an unknown individual had access certain college employees' email accounts.
The press release noted that some combination of name, address, date of birth, social security number,
passport information,medical information,usernames, and passwords may have been accessible to the
hackers. In response,the college notified potentially impacted employees and individuals, and offered
those individuals 12 months of free identity protection services. FKCC also implemented increased
security measures for account access such as multi-factor authentication.
March 2020 (Local Government): Beginning in March of 2020, a software attack crippled the City of
Marathon's communication system, including email, internet, and broadcast capabilities. The system was
ransomed, and the attack and subsequent recovery took over 4 months. The City had to update and de-
encrypt most computers. Costs associated include insurance policies, specialist and IT assistance, and
time costs of systems being down.
August through September 2020 (Local Government): For the two weeks between August 28'through
September 16th, 2020,the computers in the Key West City Hall were inaccessible due to a suspected
virus. These impacts also impacted the Key West Police Department. The networks at City Hall were
shutdown voluntarily when the virus was initially discovered to allow IT workers to identify the problem
and rebuild the servers. During this week,police officers were writing police reports on paper—with a
backlog to be uploaded when the servers returned. Additionally, any requests for existing reports were
difficult to fulfil because the reports would have to physically be located in the building. Community
members could still pay parking tickets and apply for building permits,but this could not be done online
and had to be done by mail or in person.
Cyber attacks occur daily,but most have negligible impacts at the local or county level. The possibility of
a larger disruption affecting systems within the county is a constant threat,but it is difficult to quantify
the exact probability due to such highly variable factors as the type of attack and intent of the attacker.
Minor attacks against business and government systems have become a commonplace occurrence but are
usually stopped with minimal impact. Similarly, data breaches impacting the information of residents of
Monroe County are almost certain to happen in coming years. Major attacks or breaches specifically
targeting systems in the county are less likely but cannot be ruled out.
Probability: 2—Possible
S
As discussed above,the impacts from a cyber attack vary greatly depending on the nature, severity, and
success of the attack.
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ME I HODOLOGIES AND ASS( T S
Vulnerability to cyber attacks was assessed based on past occurrences nationally and internationally as
well as publicly available information on these vulnerabilities, as well as attacks occurring in the region.
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PEOPLE
Cyber-attacks can have a significant cumulative economic impact. According to the most recent Internet
Crime Report run by the Federal Bureau of Investigation, the State of Florida experienced a loss of over
$874 million during the year 2023. A major cyber-attack has the potential to undermine public confidence
and build doubt in their government's ability to protect them from harm.
Injuries or fatalities from cyber-attacks would generally only be possible from a major cyber terrorist
attack against critical infrastructure.
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PROPERTY
Short of a major cyber terrorist attacks against critical infrastructure,property damage from cyber attacks
is typically limited to computer systems.
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ENVIRONMENT
A major cyber terrorism attack could potentially impact the environment by triggering a release of a
hazardous materials, or by causing an accident involving hazardous materials by disrupting traffic-control
devices.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONSEQUENCE ANALYSIS
Table 4.69 summarizes the potential consequences of a cyber threat.
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Category Consequences
Cyber attacks can impact personal data and accounts. Injuries or fatalities
Public could potentially result from a major cyber terrorist attacks against critical
infrastructure.
Cyber attacks can impact personal data and accounts. Injuries or fatalities
Responders could potentially result from a major cyber terrorist attacks against critical
infrastructure.
Continuity of
Agencies that rely on electronic backup of critical files are vulnerable.The
Operations(including
delivery of services can be impacted since governments rely,to a great
Continued Delivery of
extent,upon electronic delivery of services.
Services)
Rare. Most attacks affect only data and computer systems.Sabotage of
Property, Facilities and utilities and infrastructure from a major cyber terrorist attacks could
Infrastructure
potentially result in system failures that damage property on a scale equal
with natural disasters. Facilities and infrastructure may become unusable as
a result of a cyber-attack.
Environment Rare.A major attack could theoretically result in a hazardous materials
release.
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Category Consequences
Economic Condition of
Could greatly affect the economy. In an electronic-based commerce society,
the Jurisdiction any disruption to daily activities can have disastrous impacts to the
economy. It is difficult to measure the true extent of the impact.
Public Confidence in
The government's inability to protect critical systems or confidential
the Jurisdiction's
personal data could impact public confidence.An attack could raise
Governance questions regarding the security of using electronic systems for government
services.
Increased development will not necessarily lead to increased incidents of cyberattack. Cyberattacks
generally impact critical systems rather than the built environment. However, as we become more reliant
on technology and IoT (the internet of things) any connected infrastructure would be at risk. Additionally,
increases in population puts more records at risk in the event of a cyberattack.
Cyber attacks frequently result from phishing scams. Training on cyber security can serve as a prevention
method.
The following table summarizes cyber attack disruption risk by jurisdiction. Risk is not expected to
change substantially between jurisdictions.
Jurisdiction Probability Impact Spatial WarningDuration Score Priority
Extent Time
All Jurisdictions 2 2 2 4 4 2.4 M
�1\4('Irvrc)e County,
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530RADIOLOGICAL INCIDENT
1
Hazard Probability Impact Spatial Warning Time Duration PRI
Extent Score
Radiological Incident Unlikely Critical Moderate Less than 6 hrs More than 1 2.6
week
A radiological incident is an occurrence resulting in the release of radiological material at a fixed facility
(such as power plants,hospitals, laboratories, etc.) or in transit.
Radiological incidents related to transportation are described as an incident resulting in a release of
radioactive material during transportation. Transportation of radioactive materials through Florida over
the interstate highway system is considered a radiological hazard. The transportation of radioactive
material by any means of transport is licensed and regulated by the federal government. As a rule,there
are two categories of radioactive materials that are shipped over the interstate highways:
— Low level waste consists primarily of materials that have been contaminated by low level radioactive
substances but pose no serious threat except through long-term exposure. These materials are shipped
in sealed drums within placarded trailers. The danger to the public is no more than a wide array of
other hazardous materials.
— High level waste,usually in the form of spent fuel from nuclear power plants, is transported in
specially constructed casks that are built to withstand a direct hit from a locomotive.
Radiological emergencies at nuclear power plants are divided into classifications. Table 4.70 shows these
classifications, as well as descriptions of each.
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Emergency
Classification Description
Events are in progress or have occurred which indicate a potential
Notification of Unusual
degradation of the level of safety of the plant or indicate a security threat to
Event(NOUE) facility protection has been initiated. No releases of radioactive material
requiring offsite response or monitoring are expected unless further
degradation of safety systems occurs.
Events are in progress or have occurred which involve an actual or potential
substantial degradation of the level of safety of the plant or a security event
Alert that involves probable life-threatening risk to site personnel or damage to
site equipment because of hostile action.Any releases are expected to be
limited to small fractions of the Environmental Protection Agency
(EPA) Protective Action Guides(PAGs)
Events are in progress or have occurred which involve actual or likely major
failures of plant functions needed for protection of the public or hostile
action that results in intentional damage or malicious acts;1)toward site
Site Area Emergency personnel or equipment that could lead to the likely failure of or;2) that
(SAE) prevent effective access to,equipment needed for the protection of the
public.Any releases are not expected to result in exposure levels which
exceed EPA PAG exposure levels beyond the site boundary.
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Emergency
Classification Description
Events are in progress or have occurred which involve actual or imminent
substantial core degradation or melting with potential for loss of
General Emergency
containment integrity or hostile action that results in an actual loss of
physical control of the facility. Releases can be reasonably expected to
exceed EPA PAG exposure levels offsite for more than the immediate site
a rea.
Warning Time: 4—Less than 6 hours
Duration: 4—More than one week
Turkey Point Nuclear Generating Station, located in the south of Miami-Dade County and northeast of the
planning area, is a twin reactor nuclear power station. It has three currently operating units including two
802-megawatt units (units 3 and 4) and one 1,1 50-megawatt unit(unit 5). There are two retired 404-
megawatt units (units 1 and 2) still on-site. Commercial operation began in 1967 and the most recent unit
was completed in 2007. Units 3 and 4 are pressurized water reactors and unit 5 is a combined-cycle gas-
fired unit. As the sixth largest power plant in the United States and third largest in Florida,it serves all of
southern Florida. The plant is operated with a very high level of security. This is the location from which
the most catastrophic nuclear accident might occur and will be the focal point of the nuclear analysis in
this plan. In December of 2019,units 3 and 4 at Turkey Point Nuclear Generating Station was granted the
world's first 80-year operating license.
The Nuclear Regulatory Commission defines two emergency planning zones around nuclear plants:
— Emergency Planning Zone (EPZ)—The EPZ is a 10-mile radius around nuclear facilities. It is also
known as the Plume Exposure Pathway. Areas located within this zone are at highest risk of exposure
to or inhalation of radioactive materials. Within this zone,the primary concern is exposure to and
inhalation of radioactive contamination. Predetermined action plans within the EPZ are designed to
avoid or reduce dose from such exposure. This is the designated evacuation radius recommended by
the Nuclear Regulatory Commission and residents within this zone would be expected to evacuate in
the event of an emergency. Other actions such as sheltering and the use of potassium-iodide must be
taken to avoid or reduce exposure in the event of a nuclear incident.
— Ingestion Pathway Zone(IPZ)—The IPZ is delineated by a 50-mile radius around nuclear facilities
as defined by the federal government. Also known as the Ingestion Exposure Pathway, the IPZ has
been designated to mitigate contamination in the human food chain resulting from a radiological
accident at a nuclear power facility. Contamination to fresh produce, water supplies, and other food
produce may occur when radionuclides are deposited on surfaces.
Figure 4.3 8 shows the location of Turkey Point Nuclear Generating Station and the approximate 10-mile
Emergency Planning Zone(EPZ)buffer and 50-mile Ingestion Pathway Zone(IPZ) around the plant. The
northeastern-most tip of the Florida Keys,just north of Key Largo, falls within the 10-mile EPZ. Much of
mainland Monroe and the Keys north of Islamorada fall within the IPZ.
Spatial Extent: 3—Moderate
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
The International Atomic Energy Association(IAEA) developed the International Nuclear and
Radiological Event Scale to quantify the magnitude of radiological events. This scale is logarithmic,
meaning each increasing level represents a 10-fold increase in severity compared to the previous level.
Major Acci�d'ent
4-a Seri ous ACC I dent
a
Acciden, With Wider Co,nS,eqUe,,,I1Ce. ,,
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May 8, 1974—During a routine test, it was discovered that two of the three Emergency Feedwater pumps
which served unit 3 failed due to overtightened packing. The third pump also failed but was caused by a
malfunction in the turbine. These failures,had they not been found and corrected, could have led to a
nuclear disaster if other failures had occurred simultaneously.
August 24, 1992—Category 5 Hurricane Andrew hit Turkey Point causing damage to many systems.
The fire protection systems were partly disabled, two raw water tanks were destroyed, a third was
drained, and the smokestack on unit I cracked. Offsite power was lost so onsite generators had to be
operated for numerous days.
February 26,2008—The loss of offsite power prompted both reactors to shut down which lead to a
widespread power outage affecting 700,000 customers and a total of 2.5 million people. The originating
event was an overheated voltage switch that caught fire in a substation 23 miles away from Turkey Point.
Power was restored within 5 hours of the blackout. Large commercial locations such as Walt Disney
World, Orlando International Airport, and Miami International Airport were affected.
March 18,2017—An electrical fault happened in unit 3 causing the loss of a safety system and a reactor
trip. This fault caused an arc flash which minorly burned one plant worker. All other safety systems
were operational so there was no threat to the community or environment.
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August 17-20,2020—Turkey Point experienced three unplanned nuclear reactor shutdowns. On August
17th,plant operators manually shut down the reactor as a response to rising steam generator water levels.
On August 19th, an instrument sensed higher-than-expected neutron activity in the reactor core, causing
the plant's protection system to automatically shut down the reactor during startup. On August 20th, a
reactor was once again manually shut down after the loss of a steam generator feed water pump. These
three shutdowns in a short time frame prompted a Nuclear Regulatory Commission(NRC)inspection.
(
Radiological hazards are highly unpredictable.Nuclear reactors present the possibility of catastrophic
damages,yet the industry is highly regulated and historical precedence suggests an incident is unlikely.
Probability: I — Unlikely
While climate change is not projected to have any direct impact on a potential nuclear power plant
incident, the low-lying coastal location of the Turkey Point Nuclear Generating Station in Miami-Dade
County means this plant is particularly susceptible to the impacts of sea level rise and increased storm
surge. The plant won federal approval to continue operating through at least 2053. By the end of the
plant's current license, Miami-Dade is planning for just under 2 feet of SLR while Turkey Point is
planning for 0.5 to just over 1 foot of Sea Level Rise. The threat of increasing incidences of flood and
higher storm surges could increase the likelihood of an event at Turkey Point.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PEOPLE
People within the 10-mile EPZ are at risk of direct exposure to radioactive material. People within the 50-
mile EPZ are at risk of exposure through ingestion of contaminated food and water. Low levels of
radiation are not considered harmful,but a high exposure to radiation can cause serious illness or death.
Beyond those in the EPZ and IPZ,the entirety of Monroe County is potentially at risk because of
operations at the Turkey Point Nuclear Generating Station. Turkey Point relies on a one-of-its-kind 5,900-
acre cooling canal system—rather than the more commonly used cooling towers. Millions of gallons of
saltwater have seeped from these canals into the Biscayne aquifer beneath the canals; an underground
saltwater plume has spread more than 10.6 miles inland. As the majority of Monroe County's drinking
water is supplied by the Biscayne Aquifer, continued,unresolved saltwater intrusion threatens the health
of all residents.
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O
PERTY
A radiological incident could cause severe damage to the power station itself but would not cause direct
property damage outside the station, especially with the distance between the reactor and the planning
area. However,property values could drop substantially if a radiological incident resulted in
contamination of nearby areas.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ENVIRONMENT
A radiological incident could result in the spread of radioactive material into the environment,which
could contaminate water and food sources and harm animal and plant life. These impacts are lessened the
further an area is to the plant site.
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CONS
EQ(JENCE. L
Table 4.71 summarizes the potential detrimental consequences of radiological incident.
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Category Consequences
High levels of radiation could cause serious illness or death.Those living
Public and working closest to the nuclear plant would face the greatest risk of
exposure.
Responders Responders face potential for heightened exposure to radiation,which
could cause severe chronic illness and death.
Continuity of Operations An incident at the nuclear plant could interrupt power generation and
(including Continued cause power shortages. Regular operations would likely be affected by the
Delivery of Services) response effort an event would require.
Property, Facilities and The plant itself could be damaged by a radiological incident. Nearby
Infrastructure property and facilities could be affected by contamination.
Water supplies,food crops,and livestock within 50 miles of the nuclear
Environment plant could be contaminated by radioactive material in the event of a
major incident.
Economic Condition of The local economy could be affected if a radiological incident caused
the Jurisdiction
contamination of nearby areas. Property values and economic activity
could decline as a result.
Public Confidence in the A radiological incident would likely cause severe loss of public confidence
Jurisdiction's Governance given that the hazard is human-caused and highly regulated. Public
confidence can also be affected by false alarms.
Natural hazards are often interconnected. Any given hazard may lead to, or be spurred by, another hazard
—sometimes referred to as cascading disasters. Radiological Incidents, although not natural,may be
associated with certain natural hazards, including flood,tropical cyclone,tornado, and sea level rise.
Northeastern Monroe County is most at risk to the impacts of a radiological incident at the Turkey Point
Nuclear Facility. An effective education and outreach program about the impacts of radiation within the
EPZ would help reduce vulnerability to those living within this zone.
The Village of Islamorada and areas north in Unincorporated Monroe County are within the Ingestion
Pathway Zone,meaning food grown in this area or water will be impacted in the event of a nuclear
emergency. Community members here are only at risk if they ingest impacted food/drinks and should be
educated as such.
The continued utilization of cooling canals at Turkey Point threatens further saltwater intrusion into the
Biscayne Aquifer and in turn threatens the predominant drinking water source for the entire county.
The following table summarizes radiological incident risk by jurisdiction. Risk is not expected to change
substantially between jurisdictions,however jurisdictions overlapping with the Ingestion Pathway Zone
were given an impact rating of critical.
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Jurisdiction Probability Impact Spatial WarningDuration Score Priority
Extent Time
Islamorada 1 3 3 4 4 2.6 M
Key Colony
1 2 3 4 4 2.3 M
Beach
Key West 1 2 3 4 4 2.3 M
Layton 1 2 3 4 4 2.3 M
Marathon 1 2 3 4 4 2.3 M
Unincorporated
1 3 3 4 4 2.6 M
Monroe County
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As discussed in Section 4.2,the Priority Risk Index was used to rate each hazard on a set of risk criteria
and determine an overall standardized score for each hazard. The conclusions drawn from this process are
summarized below.
Table 4.72 summarizes the degree of risk assigned to each identified hazard using the PRI method.
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Hazard ProbabilityImpact Spatial WarningTime Duration PRI
P Extent Score
Natural Hazards
Coastal Erosion Likely Limited Moderate More than 24 hrs Less than 1 week 2.5
Drought Likely Minor Large More than 24 hrs More than 1 week 2.
Extreme Heat Likely Limited Large More than 24 hrs Less than 1 week 2.7
Flood Highly Likely Critical Large 6 to 12 hours Less than 1 week
Sea Level Rise Highly Likely Critical Large More than 24 hrs More than 1 week
Severe Storms and
Tornadoes' Highly Likely Limited Large Less than 6 hrs Less than 6 hrs 2.6
(Thunderstorm Wind)
Severe Storms Highly Likely Minor Negligible Less than 6 hrs Less than 6 hrs 2.2
(Lightning &Hail)
Severe Storms
(Tornadoes
Likely Limited Small Less than 6 hrs Less than 6 hrs 2.4
Tropical Cyclones Highly Likely Catastrophic Large More than 24 hrs Less than 1 week Nil
Wildfire Likely Limited Small Less than 6 hrs Less than 1 week 2.6
Technological and Human-Caused Hazards&Threats
Cyber Attack Possible Limited Small Less than 6 hrs More than 1 week 2.4
Radiological Incident Unlikely Critical Moderate Less than 6More than 1 week 2.6
hou rs
Severe Storms hazards average to a score of 2.4 and are therefore considered together as a moderate-risk hazard.
The results from the PRI have been classified into three categories based on the assigned risk value which
are summarized in Table 4.73:
High Risk—Widespread potential impact. This ranking carries a high threat to the general population
and/or built environment. The potential for damage is widespread.
Moderate Risk—Moderate potential impact. This ranking carries a moderate threat level to the general
population and/or built environment. Here the potential damage is more isolated and less costly than a
more widespread disaster.
Low Risk—Minimal potential impact. The occurrence and potential cost of damage to life and property
is minimal. This is not a priority hazard.
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SECTION 4: HAZARD IDENTIFICATION&RISK ASSESSMENT
°°° IIIIIII IIIIIII 4�,,.....73 IIIIIII°°III IIIIIII °f 1111114 IIIIIII 1111114° IIIIIII flllilll °tlllilll
Flood
Sea Level Rise
Tropical Cyclones
Coastal Erosion
Drought
Extreme Heat
Severe Storms&Tornado (Thunderstorm, Lightning, Hail)
Wildfire
Cyber Attack
Radiologic Incident
Low Risk none
(<2.0)
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IIIII In IIIIIIIIIIIIIIIIIIIIIIIIII, II II II II II II II II II II II IIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIkwooIIIIIIIIIIIIIIIIIIIIIII II
Brink,Uri ten;David Twichell;Patrick Lynett;Eric Geist;Jason Chaytor;Homa Lee;Brian Buczkowski;
and Claudia Flores.Regional Assessment of Tsunami Potential in the Gulf of Mexico:U.S. Geological
Survey Administrative Report.National Tsunami Hazard Mitigation Program.2009.
Climate Central Surging Seas Risk Finder,Accessed February 2025.
FEMA Disaster Declarations Summary,updated March 2025.
FEMA Mitigation Ideas:A Resource for Reducing Risk to Natural Hazards. 2013.
FEMA.Monroe County and Incorporated Areas Flood Insurance Study. Revised May 16,2012.
FEMA. Community Information System,2025.
FEMA,ISO.Monroe County Repetitive Loss Data.August 2024.
Florida Department of Environmental Protection,Division of Water Resource Management. Critically
Eroded Beaches in Florida.Updated August 2024.
Florida Department of Environmental Protection,Office of Resilience and Coastal Protection. Strategic
Beach Management Plan:Florida Keys Region. May 2023.
Florida Department of Transportation.Florida Bridge Inventory,2019.
IPCC,2007. Climate Change 2007: The Physical Science Basis,Contribution of Working Group I to the
Fourth Assessment Report of the Intergovernmental Panel on Climate Change. (Solomon, S.,D. Qin,M.
Manning,Z. Chen,M.Marquis,K.B.Averyt,M. Tignor,and H.L.A-2 EC 1165-2-212 1 Oct 11 Miller,
eds.). Cambridge University Press,Cambridge,United Kingdom and New York,NY,USA.
— IPCC,2014. Climate Change 2014: Impacts,Adaptation,and Vulnerability. Contribution of Working Group
II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change.
— IPCC,2018: Global warming of 1.5°C.An IPCC Special Report on the impacts of global warming of 1.5°C
above pre-industrial levels and related global greenhouse gas emission pathways, in the context of
strengthening the global response to the threat of climate change,sustainable development,and efforts to
eradicate poverty[V.Masson-Delmotte,P.Zhai,H. O.P6rtner,D.Roberts,J. Skea,P.R. Shukla,A.Pirani,
W.Moufouma-Okla,C.Pean,R. Pidcock, S. Connors,J.B.R.Matthews,Y. Chen,X.Zhou,M. I. Gomis,E.
Lonnoy,T. Maycock,M. Tignor, T.Waterfield(eds.)].In Press.
— IPCC,2023: Climate Change 2023: Synthesis Report. Contribution of Working Groups I,II and III to the
Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing Team,H. Lee
and J.Romero(eds.)].IPCC, Geneva, Switzerland,pp. 35-115,doi: 10.59327/IPCC/AR6-9789291691647.
— James B. Elsner, Svetoslava C. Elsner,and Thomas H. Jagger. The increasing efficiency of tornadoes in the
United States. Climate Dynamics/vol.45 issue 3-4,pp 651-659.
— Mazzei,Patricia. 82 Days Underwater: The Tide is High but They're Holding On.November 24,2019.New
York Times.https://www.nytimes.com/2019/11/24/us/florida-keys-flooding-king-tide.html
— Mentaschi,L. et al. Global long-term observations of coastal erosion and accretion.August 27,2018.
Scientific Reports.https://doi.org/10.1038/s4l598-018-30904-w
— Monroe County local GIS data(parcels,LOMCs,critical facilities).2024.
— Monroe County Emergency Management Department.Monroe County Comprehensive Emergency
Management Plan.Updated July 2022.
— National Climate Assessment,2014.
— Fifth National Climate Assessment,2023
— National Drought Mitigation Center,Drought Impact Reporter.
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— National Integrated Drought Information System,U.S.Drought Portal.
— National Weather Service.
— NOAA,Coastal Change Analysis Program(C-CAP).
https://coast.noaa.gov/digitalcoast/data/ccapregional.html
— NOAA,National Centers for Environmental Information, Storm Events Database.
— NOAA,National Hurricane Center.
— NOAA,Office of Coastal Management.
— NOAA,Tides and Currents
— North Carolina State Climate Office. Climate Tools.
— Southeast Florida Regional Climate Change Compact.Unified Sea Level Rise Projection.Updated 2019.
Accessed February 2025.
— Southern Wildfire Risk Assessment,2025.
— State of Florida. Enhanced Hazard Mitigation Plan.2023.
— U.S. Census Bureau.American Community Survey 2019-2023 5-Year Estimates.
— U.S.Department of Agriculture,Risk Management Agency,Cause of Loss Historical Data Files,2007-2023.
— U.S.Department of Transportation Pipeline and Hazardous Materials Safety Administration.
— U.S.Drought Monitor. February 2025.
— U.S. Energy Information Administration
— U.S. Environmental Protection Agency Toxic Release Inventory.
— U.S.Forest Service,Wildland Fire Assessment System.
— U.S. Geological Survey Coastal Change Hazards Portal.
— U.S. Global Change Research Program,2016: The Impacts of Climate Change on Human Health in the
United States: A Scientific Assessment.http://dx.doi.org/10.7930/JOR49NQX
— USGCRP,2017: Climate Science Special Report: Fourth National Climate Assessment,Volume I
[Wuebbles,D.J.,D.W.Fahey,K.A.Hibbard,D.J.Dokken,B.C. Stewart,and T.K.Maycock(eds.)].U.S.
Global Change Research Program,Washington,DC,USA,470 pp.,doi: 10.7930/JOJ964J6.
— VAISALA,National Lightning Detection Network.
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SECTIONS: CAPABILITY ASSESSMENT
S S \4 CAIIIIIIII�I�IIIIIIIIIIIIIIIIII IIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIII IIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII14 IIIIIIIIIIII IIIIIIIIIIII
Y ASS 1111111111111111111111111111111 iiiiiiiiiiiiiiiiiiiiiillillillillillillI iiiiiiiiiiiiiiiiiiiiiillillillillilliilI
This section discusses the capability of Monroe County to implement hazard mitigation activities. It
consists of the following four subsections:
5.1 Overview
5.2 Conducting the Capability Assessment
5.3 Capability Assessment Findings
5.4 Conclusions on Local Capability
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The purpose of conducting a capability assessment is to determine the ability of a local jurisdiction to
implement a comprehensive mitigation strategy, and to identify potential opportunities for establishing or
enhancing specific mitigation policies,programs,or projects. As in any planning process, it is important
to try to establish which goals, objectives, and actions are feasible,based on an understanding of the
organizational capacity of those agencies or departments tasked with their implementation. A capability
assessment helps to determine which mitigation actions are practical and likely to be implemented over
time given a local government's planning and regulatory framework, level of administrative and technical
support, fiscal resources, and current political climate.
A capability assessment has two primary components: 1) an inventory of a local jurisdiction's relevant
plans, ordinances, and programs already in place; and 2) an analysis of its capacity to carry them out.
Careful examination of local capabilities will detect any existing gaps, shortfalls, or weaknesses with
ongoing government activities that could hinder proposed mitigation activities and possibly exacerbate
community hazard vulnerability. The capability assessment also highlights the positive mitigation
measures already in place or being implemented at the local government level,which should continue to
be supported and enhanced through future mitigation efforts.
The capability assessment completed for Monroe County serves as a critical planning step toward
developing an effective mitigation strategy. Coupled with the risk assessment,the capability assessment
helps identify and target effective goals, objectives, and mitigation actions that are realistically achievable
under given local conditions.
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To facilitate the inventory and analysis of local government capabilities within the planning area,
individual meetings were held with LMSWG members from each jurisdiction to review a variety of
"capability indicators" such as existing local plans,policies,programs, or ordinances that contribute to
and/or hinder the jurisdiction's ability to implement hazard mitigation actions. Other indicators included
information related to fiscal, administrative, and technical capabilities, such as access to local budgetary
and personnel resources for mitigation purposes, and existing education and outreach programs that can
be used to promote mitigation.
In addition to requesting LMSWG input,the planning team re-examined data from the 2020 plan and
conducted a review of plans,policies, and ordinances in order to identify changes in capability over the
past five years. The previous plan's capability assessment was developed using feedback from the
LMSWG through a detailed Local Capability Self-Assessment worksheet.
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At a minimum,the capability assessment findings provide an extensive and consolidated inventory of
existing local plans, ordinances,programs, and resources in place or under development. With this
information, inferences can be made about the overall effect on hazard loss reduction in each community.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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The findings of the capability assessment are summarized in this plan to provide insight into the relevant
capacity of Monroe County to implement hazard mitigation activities. All information is based upon the
input provided by local government officials and subsequent updates by the planning team and the
LMSWG.
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5.3.7 PLANNING AND
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Planning and regulatory capability is based on the implementation of plans, ordinances, and programs that
demonstrate a local jurisdiction's commitment to guiding and managing growth, development, and
redevelopment in a responsible manner,while maintaining the general welfare of the community. It
includes emergency response and mitigation planning, comprehensive land use planning, and
transportation planning. Regulatory capability also includes the enforcement of zoning or subdivision
ordinances and building codes that regulate how land is developed and structures are built, as well as
protecting environmental,historic, and cultural resources in the community. Although some conflicts can
arise,these planning initiatives generally present significant opportunities to integrate hazard mitigation
principles and practices into the local decision-making process.
Table 5.1 provides a summary of the relevant local plans, ordinances, and programs already in place or
under development for Monroe County. A checkmark(v ) indicates that the given item is currently in
place and being implemented. A plus sign(+) indicates that a jurisdiction is covered for that item under a
county-implemented version. An asterisk(*) indicates that a jurisdiction is developing an item. Each of
these local plans, ordinances, and programs should be considered available mechanisms for incorporating
the requirements of the Local Mitigation Strategy. This information will help identify opportunities to
address gaps, weaknesses, or conflicts with other initiatives and integrate the implementation of this plan
with existing planning mechanisms where appropriate.
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SECTIONS: CAPABILITY ASSESSMENT
A more detailed discussion on planning and regulatory capability follows, along with the incorporation of
additional information based on the narrative comments provided by LMSWG members and local staff in
response to the self-assessment and subsequent discussions.
MANAGEMENT5.3.7.7 EMERGENCY
Hazard mitigation is widely recognized as one of the four primary phases of emergency management, as
is shown in Figure 5.1. In reality,mitigation is interconnected with all other phases and is an essential
component of effective preparedness,response, and recovery. Opportunities to reduce potential losses
through mitigation practices are most often implemented before a disaster event, such as through the
elevation of flood-prone structures or by regular enforcement of policies that regulate development.
However,mitigation opportunities can also be identified during immediate preparedness or response
activities, such as installing storm shutters in advance of a hurricane. Furthermore, incorporating
mitigation during the long-term recovery and redevelopment process following a disaster event is what
enables a community to become more resilient over time.
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Planning for each phase is a critical part of a comprehensive emergency management program and a key
to the successful implementation of hazard mitigation actions.
A hazard mitigation plan, or local mitigation strategy, is a community's blueprint for how it intends to
reduce the impact of natural and human-caused hazards on people and the built environment. The
essential elements of a hazard mitigation plan include a risk assessment, capability assessment, and
mitigation strategy.
— All participating jurisdictions in this multi jurisdictional planning effort participated in and adopted
the 2020 Monroe County Local Mitigation Strategy.
— Key West and Layton/Key Colony Beach are currently(as of Spring 2025) developing vulnerability
assessments and adaptation plans,which should be completed by the end of 2025. Key West's plan
will culminate in a community-prioritized 10-year Adaptation Plan that identifies projects,budgets,
and grants necessary to prepare the city and its residents for future climate hazards.
— Islamorada and Marathon developed vulnerability assessments in 2024.
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Monroe County and Islamorada, Layton, Key Colony Beach and Marathon are developing a
combined vulnerability assessment beginning in 2025.
SAS
A disaster recovery plan serves to guide the physical, social, environmental, and economic recovery and
reconstruction process following a disaster event. In many instances,hazard mitigation principles and
practices are incorporated into local disaster recovery plans with the intent of capitalizing on opportunities
to break the cycle of repetitive disaster losses. Disaster recovery plans can also lead to the preparation of
disaster redevelopment policies and ordinances to be enacted following a hazard event.
Monroe County's 2009 Recovery Plan outlines the following policies and procedures for post-disaster
mitigation:
1. Assign a Hazard Mitigation Coordinator to lead the effort and provide overall coordination of the
post—disaster mitigation planning process and grant proposal development.
a. Ensure this person has the authority to cross departmental lines and ensure
interdepartmental participation.
2. Review the County's Pre—Disaster Mitigation Plan; Determine updates and changes needed.
3. Participate on an Interagency Hazard Mitigation Committee (IHMC),made up of federal, state
and local representatives who will prepare a report that serves as the basis for the hazard
mitigation plan.
a. The IHMC identifies opportunities for reducing or eliminating the long—term hazard risk
to people and property. The IHMC report normally includes an analysis of the disaster
incident, a historical perspective regarding disasters in the impacted area, and
recommendations to bring various governmental agencies together to reduce the potential
for future losses.
4. Coordinate with RF# 13 (Redevelopment(Planning and Community Development))to ensure
the Post—Disaster Mitigation Plan and strategies are linked with land use plans, subdivision
regulations,building codes, storm water management plans,the capital improvement plan, and
other components of the County's Comprehensive Plan.
5. Identify and apply for federal and state post—disaster mitigation programs and funds.
6. Update the County's Hazard Mitigation Plan.
In January 2020, Monroe County released its Post-Disaster Recovery Strategy,which serves as an
operational framework intended to help Monroe County navigate resources that are available for long-
term recovery, after FEMA Individual Assistance and Public Assistance are exhausted. Stakeholders from
each of Monroe County's jurisdictions were included in the creation of the plan. The plan outlines long-
term recovery procedures for various county functions. Long-term community recovery planning
procedures that support post-disaster mitigation are listed below:
Landfall to 3 months:
— Work closely with Monroe County Emergency Management to understand data related to the
FEMA Individual Assistance Program. Specifically, document the number of applicants,the
amount of assistance provided to-date and the number of individuals denied assistance. It is also
important to understand the number of households who are provided temporary sheltering
assistance support through FEMA trailers,hotel lodging or other resources.
— Review existing plans and ordinances to determine if adjustments need to be made to streamline
recovery or address a specific need resulting from the disaster.
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3 to 6 months:
— Coordinate with the Housing Recovery Team to conduct a survey of long-term housing repair needs
that considers the appetite of homeowners for mitigation programs as well as voluntary buyout
programs.
6 months to 1 year:
— Coordinate the Housing Recovery Team to understand impacts on homeowners and renters and the
need for new workforce housing to support long-term recovery.
— Coordinate with the Economic Recovery Team to conduct a survey of local long-term business
recovery needs (the survey conducted following Hurricane Irma is a great example).
— Coordinate with the Infrastructure Recovery Team to understand infrastructure impacts and specific
projects that will not be covered by the FEMA Public Assistance or the FEMA Hazard Mitigation
Grant Program.
— Coordinate with the Finance and Administration Teams to understand the long-term fiscal impacts the
County and any additional support that may be needed to ensure a successful recovery. This can
include financial assistance to support local tax revenue shortfalls or new positions that are needed to
support long-term recovery and redevelopment.
— Coordinate with the Finance and Administration to understand impacts to cultural and historic
resources and any gaps in funding that may exist to ensure that these resources are restored.
— Coordinate with the Environmental Restoration Team to understand impacts on the environment,
including marine debris, fisheries, and other environmental concerns/impacts.
— Coordinate with municipalities to understand how the disaster impacted their community and specific
projects not covered by current resources,needed to support this recovery.
— Conduct forums or listening sessions to get public feedback on important elements to preserve in the
community and potential strategies to build-back in a way that may move the community in a more
resilient direction in the future.
1 to 2 years:
— Ensure that the collection of unmet needs and action plan development processes are transparent by
posting relevant information to a central website for recovery and offering opportunities in-person
and online for community members to ask questions and offer feedback on projects.
— Work closely with the Public Information Officer to ensure that all opportunities to provide feedback
are broadly disseminated through all advertising venues including social media,press releases, etc.
— Work with schools and non-profit agencies to develop creative ways to involve students and the art
community in soliciting feedback on redevelopment.
— Develop a long-term recovery plan that builds on the information collected to date and outlines clear
actions that are needed,with funding sources aligned to guide recovery and long-term redevelopment.
— As resources are available to support long-term recovery, coordinate closely with municipalities and
other eligible stakeholders to ensure that the opportunities are seized.
2+years:
— Continue close coordination with all stakeholders as funding continues to roll out and provide
webinars,meetings,newsletters and other media to get the word out about grant opportunities and
facilitate a forum for communication.
Key West has its own post-disaster redevelopment plan.
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An emergency operations plan outlines responsibilities and how resources will be deployed during and
following an emergency or disaster.
— All participating jurisdictions are covered under the Monroe County Emergency Management
Comprehensive Plan,which was passed in 2022.
S
A continuity of operations plan establishes a chain of command, line of succession, and plans for backup
or alternate emergency facilities in case of an extreme emergency or disaster event.
— All participating jurisdictions are covered under the Monroe County Continuity of Operations Plan.
The implementation of hazard mitigation activities involves agencies and individuals beyond the
emergency management profession. Stakeholders may include local planners,public works officials,
economic development specialists, and others. In many instances, concurrent local planning efforts will
help to achieve or complement hazard mitigation goals.
A comprehensive or land use plan establishes the overall vision for what a community wants to be and
serves as a guide for future governmental decision making. Typically, a comprehensive plan contains
sections on demographic conditions, land use,transportation elements, and community facilities. Given
the broad nature of the plan and its regulatory standing in many communities,the integration of hazard
mitigation measures into the comprehensive plan can enhance the likelihood of achieving risk reduction
goals, objectives, and actions.
— All participating jurisdictions have a comprehensive plan.
— Key Colony Beach and Islamorada are currently updating their comprehensive plans.
A capital improvements plan guides the scheduling of spending on public improvements. A capital
improvements plan can serve as an important mechanism for guiding future development away from
identified hazard areas. Limiting public spending in hazardous areas is one of the most effective long-
term mitigation actions available to local governments.
— All participating jurisdictions have a capital improvements plan in place.
A historic preservation plan is intended to preserve historic structures or districts within a community. An
often-overlooked aspect of the historic preservation plan is the assessment of buildings and sites located
in areas subject to natural hazards, and the identification of ways to reduce future damages. This may
involve retrofitting or relocation techniques that account for the need to protect buildings that do not meet
current building standards or are within a historic district that cannot easily be relocated out of harm's
way.
1 of the 6 participating jurisdictions have a historic preservation plan in place or under development.
Zoning represents the primary means by which land use is controlled by local governments. As part of a
community's police power,zoning is used to protect the public health, safety, and welfare of those in a
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given jurisdiction that maintains zoning authority. A zoning ordinance is the mechanism through which
zoning is typically implemented. Since zoning regulations enable municipal governments to limit the type
and density of development, a zoning ordinance can serve as a powerful tool when applied in identified
hazard areas.
— All participating jurisdictions have a zoning ordinance in place and enforce zoning regulations.
A subdivision ordinance is intended to regulate the development of residential, commercial,industrial, or
other uses, including associated public infrastructure, as land is subdivided into buildable lots for sale or
future development. Subdivision design that accounts for natural hazards can dramatically reduce the
exposure of future development.
All participating jurisdictions have a subdivision ordinance in place and enforce subdivision
regulations.
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Building codes regulate construction standards. In many communities,permits and inspections are
required for new construction. Decisions regarding the adoption of building codes (that account for
hazard risk), the type of permitting process required both before and after a disaster, and the enforcement
of inspection protocols all affect the level of hazard risk faced by a community.
— All participating jurisdictions have building codes in place and enforce building code requirements.
The adoption and enforcement of building codes by local jurisdictions is routinely assessed through the
Building Code Effectiveness Grading Schedule(BCEGS)program, developed by the Insurance Services
Office, Inc. (ISO). The results of BCEGS assessments are routinely provided to ISO's member private
insurance companies,which in turn may offer ratings credits for new buildings constructed in
communities with strong BCEGS classifications. The expectation is that communities with well-enforced,
up-to-date codes should experience fewer disaster-related losses, and as a result should have lower
insurance rates.
In conducting the assessment, ISO collects information related to personnel qualification and continuing
education, as well as number of inspections performed per day. This type of information combined with
local building codes is used to determine a grade for that jurisdiction. The grades range from 1 to 10,with
a BCEGS grade of 1 representing exemplary commitment to building code enforcement, and a grade of
10 indicating less than minimum recognized protection.
Flooding represents the greatest natural hazard facing the nation,yet the tools available to reduce the
impacts associated with flooding are among the most developed when compared to other hazard-specific
mitigation techniques. In addition to approaches that cut across hazards such as education, outreach, and
the training of local officials,the National Flood Insurance Program(NFIP) contains specific regulatory
measures that enable government officials to determine where and how growth occurs relative to flood
hazards. Participation in the NFIP is voluntary for local governments; however,program participation is
strongly encouraged by FEMA as a first step for implementing and sustaining an effective hazard
mitigation program. It is therefore used as part of this capability assessment as a key indicator for
measuring local capability.
To participate in the NFIP, a county or municipality must adopt a local flood damage prevention
ordinance that requires established minimum building standards in the floodplain. These standards require
that all new buildings and substantial improvements to existing buildings be protected from damage by a
1%-annual-chance flood event and that new development in the floodplain not exacerbate existing flood
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problems or increase damage to other properties. Within the last five years, Monroe County and its
incorporated communities adopted flood damage prevention ordinance updates establishing minimum
elevation requirements communitywide,protecting development not only in the SFHA but also in areas
currently mapped as moderate and low risk zones.
A key service provided by the NFIP is the mapping of identified flood hazard areas. Flood Insurance Rate
Maps (FIRMs) are used to assess flood hazard risk,regulate construction practices, and set flood
insurance rates. FIRMs are an important source of information to educate residents, government officials,
and the private sector about the likelihood of flooding in their community.
All jurisdictions in Monroe County participate in the NFIP. NFIP policy and claim information for each
participating jurisdiction are provided in the jurisdictional annexes along within an overview of NFIP
participation activities and higher standards of floodplain management enforced in each community.
All jurisdictions will continue to comply with all required provisions of the NFIP. Floodplain
management is managed through zoning ordinances,building code restrictions, and the county building
inspection program. The jurisdictions will coordinate with FDEM and FEMA to develop maps and
regulations related to Special Flood Hazard Areas within their jurisdictional boundaries and,through a
consistent monitoring process,will design and improve their floodplain management program in a way
that reduces the risk of flooding to people and property. Additional details on Community Rating System
(CRS)participation and substantial damage management procedures are provided below.
An additional indicator of floodplain management capability is active participation in the CRS. The CRS
is an incentive-based program that encourages communities to undertake defined flood mitigation
activities that go beyond the minimum requirements of the NFIP. Each of the CRS mitigation activities is
assigned a point value. As a community earns points and reaches identified thresholds,they can apply for
an improved CRS class. Class ratings,which range from 10 to 1 and increase on 500-point increments,
are tied to flood insurance premium reductions. Every class improvement earns an additional 5 percent
discount for NFIP policyholders,with a starting discount of 5 percent for Class 9 communities and a
maximum possible discount of 45 percent for Class 1 communities.
Community participation in the CRS is voluntary. Any community that is in full compliance with the
rules and regulations of the NFIP may apply to FEMA for a CRS classification better than class 10. The
CRS application process has been greatly simplified over the past several years,based on community
comments intended to make the CRS more user friendly, and extensive technical assistance is available
for communities who request it.
All communities in Monroe County participate in the Community Rating System. Each community's
CRS Class is shown in Table 5.2. Key West is working toward a CRS improvement to a Class 4.
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Jurisdiction
Date of Initial NFIP Entry Date Current CRS Current Effective
FIRM/FHBM Class Map Date
Monroe County 06/20/70 06/15/1973 3 04/01/2022
City of Key Colony Beach 06/20/70 07/16/71 6 04/01/2025
City of Key West 09/03/71 09/03/1971 5 10/01/2020
City of Layton 07/01/70 07/23/1971 5 04/01/2022
City of Marathon 06/20/70 10/16/2000 6 05/01/2018
Village of Islamorada 06/20/70 10/01/1998 5 04/01/2022
Source:FEMA Community Status Book,2022
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A floodplain management plan(or a flood mitigation plan)provides a framework for action regarding
corrective and preventative measures to reduce flood-related impacts.
— This hazard mitigation plan follows the 10 steps of the CRS Activity 510 Floodplain Management
Plan process and provides a similar framework for flood mitigation; therefore, all jurisdictions have
planned for floodplain management through this process.
— Key West is currently updating its Duval Street Master Plan which addresses stormwater issues and
wind-proofing of commercial structures. The City is also updating the Mallory Square Master Plan
which will address sea wall updates and elevation.
— Monroe County, Key West,Layton,Key Colony Beach and Marathon are all currently developing
CRS Activity 452.b Watershed Management Plans. Islamorada's was completed and approved in
2024. Monroe County is updating their previous WMP that was adopted in 2019.
The NFIP requires that participating communities regulate and enforce substantial damage and substantial
improvement procedures such that, at a minimum,buildings that are damaged to 50 percent or more of
their market value or improved by 50 percent or more of their market value are required to be brought
into compliance with flood damage prevention regulations for new development, such as being elevated
to the freeboard requirement. Procedures followed by the participating jurisdictions in Monroe County are
outlined below.
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Monroe County's Building Official is designated as the Floodplain Administrator. For applications for
building permits to improve buildings and structures, including alterations,movement, enlargement,
replacement,repair, change of occupancy, additions, rehabilitations, renovations, substantial
improvements,repairs of substantial damage, and any other improvement of or work on such buildings
and structures,the Building Official of Monroe County shall follow the procedures outlined below:
— Estimate the market value, or require the applicant to obtain an appraisal of the market value prepared
by a qualified independent appraiser, of the building or structure before the start of construction of the
proposed work; in the case of repair,the market value of the building or structure shall be the market
value before the damage occurred and before any repairs are made;
— Compare the cost to perform the improvement,the cost to repair a damaged building to its pre-
damaged condition, or the combined costs of improvements and repairs, if applicable,to the market
value of the building or structure;
— Determine and document whether the proposed work constitutes substantial improvement or repair of
substantial damage; and
— Notify the applicant if it is determined that the work constitutes substantial improvement or repair of
substantial damage and that compliance with the flood resistant construction requirements of the FL
Building Code and the flood damage prevention ordinance is required.
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CITY OF KEY
BEACH
The City of Key Colony Beach's Building Official is designated as the Floodplain Administrator. For
applications for building permits to improve buildings and structures, including alterations,movement,
enlargement,replacement,repair, change of occupancy, additions,rehabilitations,renovations, substantial
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improvements,repairs of substantial damage, and any other improvement of or work on such buildings
and structures,the Building Official of Key Colony Beach shall follow the procedures outlined below:
— Estimate the market value, or require the applicant to obtain an appraisal of the market value prepared
by a qualified independent appraiser, of the building or structure before the start of construction of the
proposed work; in the case of repair,the market value of the building or structure shall be the market
value before the damage occurred and before any repairs are made;
— Compare the cost to perform the improvement,the cost to repair a damaged building to its pre-
damaged condition, or the combined costs of improvements and repairs, if applicable,to the market
value of the building or structure;
— Determine and document whether the proposed work constitutes substantial improvement or repair of
substantial damage; and
— Notify the applicant if it is determined that the work constitutes substantial improvement or repair of
substantial damage and that compliance with the flood resistant construction requirements of the FL
Building Code and the flood damage prevention ordinance is required.
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CITY OF KEY
E
The City of Key West's FEMA Coordinator is the designated Floodplain Administrator. For applications
for building permits to improve buildings and structures, including alterations,movement, enlargement,
replacement,repair, change of occupancy, additions, rehabilitations, renovations, substantial
improvements,repairs of substantial damage, and any other improvement of or work on such buildings
and structures,the foodplain administrator, shall:
— Estimate the market value, or require the applicant to submit appraisals -not older than one year-of
the market value prepared by a qualified independent appraiser, of the building or structure before the
start of construction of the proposed work; in the case of repair,the market value of the building or
structure shall be the market value before the damage occurred and before any repairs are made;
— Compare the cost to perform the improvement,the cost to repair a damaged building to its pre-
damaged condition, or the combined costs of improvements and repairs, if applicable,to the market
value of the building or structure;
— Determine and document whether the proposed work constitutes substantial improvement or repair of
substantial damage; the determination requires evaluation of previous permits issued for
improvements and repairs as specified in the definition of"substantial improvement"; for proposed
work to repair damage caused by flooding,the determination requires evaluation as specified in the
definition of"substantial damage"; and
— Notify the applicant if it is determined that the work constitutes substantial improvement or repair of
substantial damage and that compliance with the flood-resistant construction requirements of the
Florida Building Code and this ordinance is required.
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CITY OF LA YTON
The City of Layton's Building Code Administrator is designated as the Floodplain Administrator. For
applications for building permits to improve buildings and structures, including alterations,movement,
enlargement,replacement,repair, change of occupancy, additions,rehabilitations,renovations, substantial
improvements,repairs of substantial damage, and any other improvement of or work on such buildings
and structures,the Foodplain administrator, in coordination with the building official, shall:
— Estimate the market value or require the applicant to obtain an appraisal of the market value prepared
by a qualified independent appraiser, of the building or structure before the start of construction of the
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proposed work; in the case of repair,the market value of the building or structure shall be the market
value before the damage occurred and before any repairs are made.
— Compare the cost to perform the improvement,the cost to repair a damaged building to its pre-
damaged condition, or the combined costs of improvements and repairs, if applicable,to the market
value of the building or structure.
— Determine and document whether the proposed work constitutes substantial improvement or repair of
substantial damage.
— Notify the applicant if it is determined that the work constitutes substantial improvement or repair of
substantial damage and that compliance with the flood resistant construction requirements of the
Florida Building Code and this chapter is required.
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CITY OF MAPATHON
The City Manager of Marathon is designated as the Floodplain Administrator. For applications for
building permits to improve buildings and structures, including alterations,movement, enlargement,
replacement,repair, change of occupancy, additions, rehabilitations,renovations, substantial
improvements,repairs of substantial damage, and any other improvement of or work on such buildings
and structures,the Floodplain Administrator, in coordination with the Building Official shall follow the
procedures outlined below:
— Estimate the market value, or require the applicant to obtain an appraisal of the market value prepared
by a qualified independent appraiser, of the building or structure before the start of construction of the
proposed work; in the case of repair,the market value of the building or structure shall be the market
value before the damage occurred and before any repairs are made;
— Compare the cost to perform the improvement,the cost to repair a damaged building to its pre-
damaged condition, or the combined costs of improvements and repairs, if applicable,to the market
value of the building or structure;
— Determine and document whether the proposed work constitutes substantial improvement or repair of
substantial damage; and
— Notify the applicant if it is determined that the work constitutes substantial improvement or repair of
substantial damage and that compliance with the flood resistant construction requirements of the FL
Building Code and the flood damage prevention ordinance is required.
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ILA E OF ISLANDS
The Village Manager is designated as the Floodplain Administrator; however the Village Floodplain/CRS
Coordinator oversees development in the floodplain including substantial damage and substantial
improvement determinations. Islamorada has developed a Substantial Damage Administrative Procedures
Plan following FEMA's template and guidance. The Village uses Forerunner software and CityView
software to maintain a property database of structures in the floodplain and to facilitate making
substantial damage determinations following a flooding event. Staff from the Building Department and
Fire Department coordinate post-event to identify areas of damage and make substantial damage
determinations. Property owners are notified via a letter through Forerunner.
For applications for building permits to improve buildings and structures, including alterations,
movement, enlargement,replacement,repair, change of occupancy, additions, rehabilitations,
renovations, substantial improvements,repairs of substantial damage, and any other improvement of or
work on such buildings and structures,the Floodplain Administrator, in coordination with the Building
Official, shall:
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— Estimate the market value, or require the applicant to obtain an appraisal of the market value prepared
by a qualified independent appraiser, of the building or structure before the start of construction of the
proposed work; in the case of repair,the market value of the building or structure shall be the market
value before the damage occurred and before any repairs are made;
— Compare the cost to perform the improvement,the cost to repair a damaged building to its pre-
damaged condition, or the combined costs of improvements and repairs, if applicable,to the market
value of the building or structure;
— Determine and document whether the proposed work constitutes substantial improvement or repair of
substantial damage; for proposed work to repair damage caused by flooding,the determination
requires evaluation of previous permits issued to repair flood-related damage as specified in the
definition of"substantial damage"; and
— Notify the applicant if it is determined that the work constitutes substantial improvement or repair of
substantial damage and that compliance with the flood resistant construction requirements of the
Florida Building Code and this article is required.
An open space management plan is designed to preserve,protect, and restore largely undeveloped lands
in their natural state, and to expand or connect areas in the public domain such as parks, greenways, and
other outdoor recreation areas. In many instances open space management practices are consistent with
the goals of reducing hazard losses, such as the preservation of wetlands or other flood-prone areas in
their natural state in perpetuity.
— The City of Marathon is in the process of developing a Parks, Recreation, and Open Space Master
Plan.
— All other jurisdictions do not have an open space management plan.
A stormwater management plan is designed to address flooding associated with stormwater runoff. The
stormwater management plan is typically focused on design and construction measures that are intended
to reduce the impact of more frequently occurring minor urban flooding.
— 4 of 6 participating jurisdictions have a stormwater management plan.
— The City of Islamorada is currently developing an updated stormwater management plan, which is
expected to be completed in 2026.
— Monroe County, Key West,Layton,Key Colony Beach and Marathon are all currently developing
CRS Activity 452.b Watershed Management Plans. Islamorada's was completed and approved in
2024.
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The ability of a local government to develop and implement mitigation projects,policies, and programs is
directly tied to its ability to direct staff time and resources for that purpose. Administrative capability can
be evaluated by determining how mitigation-related activities are assigned to local departments and if
there are adequate personnel resources to complete these activities. The degree of intergovernmental
coordination among departments will also affect administrative capability for the implementation and
success of proposed mitigation activities.
Technical capability can generally be evaluated by assessing the level of knowledge and technical
expertise of local government employees, such as personnel skilled in using GIS to analyze and assess
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community hazard vulnerability. Community meetings were used to capture information on
administrative and technical capability through the identification of available staff and personnel
resources.
Table 5.3 provides a summary of the results for each jurisdiction with regard to relevant staff and
personnel resources. A checkmark indicates the presence of a staff member(s)in that jurisdiction with the
specified knowledge or skill.
In the past five years, Islamorada has added a new sustainability/resiliency position and a planning review
engineer. Three to four Key West staff members became Certified Floodplain Managers and they have a
resilience manager. Since the City's updated strategic plan, Key West has been able to expand their
training budget to support adaptation planning opportunities across departments.
Both Key West and Islamorada are working on a LiDAR mapping project. Islamorada will utilize this
data for a road elevation assessment in tandem with the stormwater management plan that is currently
being updated. All jurisdictions have detailed mobile LiDAR data for future planning efforts.
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Monroe County ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
City of Key Colony ✓ ✓ ✓ ✓ ✓ ✓ ✓
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City of Key West ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
City of Layton ✓ ✓ ✓ ✓ ✓ ✓ ✓
City of Marathon ✓ ✓ ✓ ✓ ✓ ✓ ✓
Village of Islamoracla ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
*Layton's Building Official has retired,and the City is under contract with a private provider.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
3 FISCAL CAPABILITY
. .
The ability of a local government to implement mitigation actions is often dependent on the amount of
money available. This may take the form of outside grant funding awards or locally based revenue and
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financing. The costs associated with mitigation policy and project implementation vary widely. In some
cases,policies are tied primarily to staff time or administrative costs associated with the creation and
monitoring of a given program. In other cases, direct expenses are linked to an actual project such as the
acquisition of flood-prone houses, which can require a substantial commitment from local, state, and
federal funding sources.
The Local Capability Self-Assessment was used to capture information on each jurisdiction's fiscal
capability through the identification of locally available financial resources.
Table 5.4 provides a summary of the results for each jurisdiction with regard to relevant fiscal resources.
A checkmark indicates that the given fiscal resource is locally available for hazard mitigation purposes
(including match funds for state and federal mitigation grant funds).
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Monroe County ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
City of Key Colony Beach ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
City of Key West ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
City of Layton ✓ ✓ ✓ ✓
City of Marathon ✓ ✓ ✓ ✓ ✓ ✓ ✓
Village of Islamorada ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Monroe County has a Municipal Service Benefit Unit to fund road elevation and tidal flooding mitigation.
Since the last plan update, several communities have added fiscal resources:
— Key West passed four general obligation bonds for resilience,parks and rec, streets (including
stormwater), and safety(fire station and police station upgrades).
— Key West received$1.4 million in FDEO and FDEP funds for a vulnerability assessment and
adaptation plan.
— Key West received a Florida Defense DIG to help establish the Bahama Village Resilience Hub.
— Layton and Key Colony Beach received funding for a vulnerability assessment through the Resilient
Florida program.
— Monroe County has received funding and updated their vulnerability assessment.
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— All jurisdictions received FDEM funds to develop new or updated watershed management plans.
— Monroe County has received funding for several road elevation projects.
— Islamorada has received USACE and FDOT funding for a revetment project.
— Monroe County Tourist Development Council can help support mitigation efforts that protect and
complement tourism in the region.
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W
This type of local capability refers to education and outreach programs and methods already in place that
could be used to implement mitigation activities and communicate hazard-related information. Examples
include natural disaster or safety related school programs;participation in community programs such as
Firewise or StormReady; and activities conducted as part of hazard awareness campaigns such as a
Tornado Awareness Month.
Table 5.5 provides a summary of relevant education and outreach resources. A checkmark indicates that
the given resource is locally available for hazard mitigation purposes.
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Monroe County ✓ ✓
City of Key Colony Beach ✓
City of Key West ✓ ✓ ✓
City of Layton ✓
City of Marathon ✓
Village of Islamorada ✓ ✓
Each community's specific public education and outreach initiatives related to hazard mitigation are
summarized below:
— Monroe County: Hosts the County's multi jurisdictional CRS Program for Public Information and the
associated Committee(all jurisdictions except for Layton participate in this PPI); StormReady
certified; Emergency management preparedness website.
— City of Key Colony Beach: Distributes flyers to the community with topics related to water
preservation, hurricane preparedness and flood preparedness.
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— City of Key West: Outreach and education through booths,work/school visits,PSAs, and online
videos on topics including,but not limited to, fire and hurricane safety, lightning,water conservation,
energy conservation, and climate change; annual mailing to repetitive loss properties; Know before
you buy brochures; Annual flood information mailing to lenders, insurance agents, and realtors.
— Layton: Community mailouts on hazard related topics.
— Marathon: Emergency Management website with preparedness guides.
— Islamorada: Public education trailer for community and school outreach, especially around home
fires; Outreach with FKAA around water conservation; Maintains a Community Emergency
Response Team(CERT); Assist with MERC programs which incorporate storm readiness,home
readiness,mitigation, and response.
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This type of local capability refers to the mitigation strategies and actions that are developed by the
communities in this plan. All communities in Monroe County pursue mitigation grant funding to
implement property protection activities, including building elevations and acquisitions, as well as
structural projects. The LMSWG coordinates regularly to review mitigation grant funding opportunities
and prioritize projects for grant applications.
In the past five years,Key West received an$11 million BRIC grant, funding a fire station and EOC,
received funds from FDEP to develop a vulnerability assessment, and worked with the Florida Division
of Historic Resources to complete an assessment and flood mitigation of historic properties.
Islamorada has been working with USAGE on the Florida Keys Costal Storm Risk Management Project
which will address US-I revetment on the Fill Keys, home elevations, and critical infrastructure
floodproofing.
LiDAR mapping is occurring throughout the county will support evaluation of potential elevation
proj ects.
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5.3.6 POLITICAL CAPABILITY
One of the most difficult capabilities to evaluate involves the political will of a jurisdiction to enact
meaningful policies and projects designed to reduce the impact of future hazard events. Hazard mitigation
may not be a local priority, or it may conflict with or be seen as an impediment to other goals of the
community, such as growth and economic development. Therefore,the local political climate must be
considered in designing mitigation strategies, as it could be the most difficult hurdle to overcome in
accomplishing their adoption and implementation.
In completing the Local Capability Self-Assessment, HMPC representatives from each community were
asked to rate political support as they perceive it and identify general examples of local political
capability, such as guiding development away from identified hazard areas,restricting public investments
or capital improvements within hazard areas, or enforcing local development standards that go beyond
minimum state or federal requirements (e.g.,building codes, floodplain management, etc.). Table 5.6
below summarizes the different government structures in the jurisdictions as well as whether or not the
governing bodies are supportive of mitigation efforts.
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Political Climate Supportive of
Jurisdiction Government Structure Mitigation Efforts?
Monroe County 5-member Board of County Commissioners Yes,supportive via resolution
City of Key Colony Beach 5-member City Commission led by Mayor Yes.
City of Key West
City Commission of 7(6 district Local political climate is very
representatives,1 Mayor) supportive of mitigation efforts.
City of Layton 5 member elected City Council and 1 Mitigation is supported by
elected Mayor Mayor,Council,and staff.
5-member City Council (3 council members,
City of Marathon Yes.
1 vice mayor, mayor)
Y
Islamorada Village of
Islamorada operates under a council- Mayor and Village Council are
manager form of government;5-member very supportive of mitigation
Islands Village Council (including Mayor) efforts in Islamorada.
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As previously discussed, one of the reasons for conducting a capability assessment is to examine local
capabilities to detect any existing gaps or weaknesses within ongoing government activities that could
hinder proposed mitigation activities and possibly exacerbate community hazard vulnerability. These
gaps,which indicate opportunities for improvement, have been identified for each jurisdiction in the
tables found throughout this section. The participating jurisdictions used the capability assessment as part
of the basis for the mitigation actions that are identified in Section 7; therefore, each jurisdiction
addresses their ability to expand on and improve their existing capabilities through the identification of
their mitigation actions. Each jurisdiction is unique in its planning, regulatory, fiscal,political, and
outreach capabilities; additional details on jurisdictional capability, including existing mitigation in
comprehensive planning efforts, and other details of local planning can be found in the Planning Area
Profile.
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SECTION 6: MITIGATION STRATEGY
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Requirement §201.6(c)(3): [The plan shall include] a mitigation strategy that provides the jurisdiction's
blueprint for reducing the potential losses identified in the risk assessment, based on existing authorities,
policies,programs and resources,and its ability to expand on and improve these existing tools.
This section describes the process for developing the mitigation strategy for the Monroe County Local
Mitigation Strategy. It describes how the Region met the requirements for Planning Step 6 (Set Goals),
Planning Step 7 (Review Possible Activities), and Planning Step 8 (Draft an Action Plan). This section
includes the following sub-sections:
— 6.1 Goals and Objectives
— 6.2 Identification&Analysis of Mitigation Activities
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6.11111111111 GOA���.....................S
Requirement§201.6(c)(3)(i):[The mitigation strategy section shall include a]description of mitigation goals to
reduce or avoid long-term vulnerabilities to the identified hazards.
Goal setting builds upon the findings of Section 4,which documents the hazards and associated risks that
threaten Monroe County, including the vulnerability of structures, infrastructure, and critical facilities.
Section 5 evaluates each jurisdiction's capacity to reduce the impact of hazards. The intent of Goal
Setting is to identify areas where improvements to existing capabilities and reductions in existing
vulnerabilities can be made so that overall risk is reduced. Goals also guide the review of possible
mitigation measures. This plan needs to make sure that recommended actions are consistent with what is
appropriate for the County and the incorporated municipalities. Mitigation goals need to reflect
community priorities and should be consistent with other local plans.
— Goals are general guidelines that explain what is to be achieved. They are usually broad-based policy
type statements, long term and represent global visions. Goals help define the benefits that the plan is
trying to achieve.
— Objectives are short term aims that,when combined, form a strategy or course of action to meet a
goal. Unlike goals, objectives are specific and measurable.
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6,,,,,7,,,,,7 COORDINATION WITH OTHER PLANNING EFFORTS
The goals of this plan need to be consistent with and complement the goals of other local planning efforts.
The primary planning documents that the goals of this plan should complement and be consistent with are
the County and participating jurisdictions' comprehensive plans. Comprehensive plans are important
because they are developed and designed to guide future growth within their communities so they
encompass long-term strategies and can be critical to reducing long term vulnerabilities. Keeping the
Local Mitigation Strategy and Comprehensive Plans consistent ensures that land development is done
with awareness and understanding of hazard risk and that mitigation projects complement rather than
contradict community development objectives. Another local resource that was reviewed for coordination
was the Southeast Florida Regional Climate Change Compact Regional Climate Action Plan 3.0; Monroe
County and all incorporated jurisdictions are part of the compact and the associated climate action plan.
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The Action Plan recommendations are broad and applicable across the region and throughout Monroe
County.
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. .2 GOAL SETTING
At the third planning meeting,held on June 5,2025,the LMSWG reviewed and discussed the goals and
objectives from the 2020 Monroe County LMS. The planning team provided recommendations for minor
revisions to the goals and objectives,which the LMSWG discussed and approved. Revisions included
minor changes to wording,reorganization of several obj ectives within the goals, The revised goals and
objectives of this plan update are detailed below in Section 6.1.3.
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6.7.3 RES UL TING GOALS
Goal 1-Protect and maintain the life,health,safety,and welfare of the community.
Objective 1.1: Provide public education and outreach to inform residents and visitors how to protect
themselves and their property.
Objective 1.2: Improve preparedness,response, and recovery capabilities to minimize hazard impacts.
Objective 1.3: Reduce losses from business interruption and support long term business viability.
Goal 2-Protect and preserve property and assets,including the built environment and natural
resources.
Objective 2.1: Retrofit or otherwise protect community infrastructure systems, including critical
facilities,utilities, water, sewer, communications, and transportation.
Objective 2.2: Use planning and regulatory tools to protect future development and prevent hazard risks
from worsening.
Objective 2.3: Preserve and protect natural areas and resources that provide hazard risk reduction and
other beneficial functions.
Objective 2.4: Pursue property protection and structural projects to reduce vulnerability of existing
development.
Goal 3-Build local capacity to enhance resiliency and enable communities to quickly recover from
hazard impacts.
Objective 3.1: Explore, develop, and implement new pre-disaster opportunities that build community
resilience.
Objective 3.2: Ensure continuity and redundancy of critical local government operations and systems.
Objective 3.3: Strengthen regional connections and continue to foster inter jurisdictional coordination for
risk reduction efforts.
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Requirement §201.6(c)(3)(ii): [The mitigation strategy section shall include a] section that identifies and
analyzes a comprehensive range of specific mitigation actions and projects being considered to reduce the
effects of each hazard,with particular emphasis on new and existing buildings and infrastructure. All plans
approved by FEMA after October 1, 2008, must also address the jurisdiction's participation in the NFIP, and
continued compliance with NFIP requirements,as appropriate.
To identify and select mitigation projects that support the mitigation goals and objectives, the risks and
vulnerabilities associated with all hazards identified and evaluated in Section 4 Hazard Identification and
Risk Assessment were evaluated for mitigation opportunities. The LMSWG analyzed viable mitigation
options that supported the identified goals and objectives, addressed key problems,risks, or
vulnerabilities, and aligned with other local plans and efforts. The LMSWG was provided with the
following list of mitigation categories which are utilized as part of the CRS planning process but are also
applicable to multi-hazard mitigation:
— Prevention — Emergency Services
— Property Protection — Structural Projects
— Natural Resource Protection — Public Education
The LMSWG was also provided with examples of potential mitigation actions for each of the above
categories. The LMSWG was instructed to consider both future and existing buildings in evaluating
possible mitigation actions. Facilitated discussions took place to examine and analyze the options. The
LMSWG also considered which actions from the previous plan and subsequent annual updates that were
not already completed should be continued in this action plan. A more detailed review of possible actions
within each mitigation category that were reviewed by the LMSWG is provided in Appendix C. Actions
that were completed or deleted are detailed in Section 2.9.
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6
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Monroe County employs a three-step mitigation action prioritization process. Step One, defined in this
section, is to identify a full range of possible mitigation activities and create a preliminary list of actions
to pursue. Steps Two and Three are detailed in Appendix D. In the process of identifying continuing and
new mitigation actions,the LMSWG was provided with a set of prioritization criteria to assist in deciding
why one recommended action might be more important,more effective, or more likely to be implemented
than another. LMSWG members were asked to rate each action with an approach modified from the
FEMA STAPLEE criteria and then evaluate the general efficacy of each action.
The LMSWG was first asked to give each action a positive(1 point),neutral (0 points), or negative(-I
point)rating for each of the STAPLEE elements:
— Socially Acceptable: Is the action acceptable to the community?Does it have a greater impact on a
certain segment of the population?Are the benefits fair?
— Technically Feasible: Is the action technically feasibly? Is it a long-term solution to the problem?
Does it capitalize on existing planning mechanisms for implementation?
— Administrative Resources: Are there adequate staffing, funding and other capabilities to implement
the project? Is there adequate additional capability to ensure ongoing maintenance?
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— Politically Supported: Will there be adequate political and public support for the project?Does the
project have a local champion to support implementation?
— Legally Allowable: Does the community have the legal authority to implement the action?
— Economically Sound: Can the action be funded locally?Will the action need to be funded by an
outside entity, and has that funding been secured? How much will the project cost? Can the benefits
be quantified, and do they outweigh the costs?
— Environmentally Sound: Does the action comply with environmental regulations? Does the action
meet the community's environmental goals?Does the action impact land,water, endangered species,
or other natural assets?
Each action could receive a STAPLEE score between 7 and-7; however,no action was considered further
if it scored less than 0 points.
Next, the LMSWG was asked to consider each action's potential efficacy by answering the following
questions with unlikely(0 points),maybe (1 point),probably(2 points), or definitely(3 points):
— Will the action result in lives saved?
— Will the action reduce property damages?
— Will the action reduce the need for response actions?
— Will the benefits exceed the cost?
Each action could receive an additional effectiveness score of 0 to 12.
Using these prioritization criteria, the LMSWG was able to score each action on a scale of 0 to 19. The
prioritization ranking, simplified as High, Medium, or Low, for each mitigation action considered by the
LMSWG is provided in the Mitigation Action Plan below. These priority rankings are defined as
follows:
— High: 14 to 19 points
— Medium: 7 to 13 points
— Low: 0 to 6 points
In accordance with the DMA requirements, an emphasis was placed on the importance of a benefit-cost
analysis in determining action priority, as reflected in the prioritization criteria above. For each action,the
LMSWG considered the benefit-cost analysis in terms of:
— Ability of the action to address the problem
— Contribution of the action to save life or property
— Available technical and administrative resources for implementation
— Availability of funding and perceived cost-effectiveness
The consideration of these criteria helped to prioritize and refine mitigation actions but did not constitute
a full benefit-cost analysis. The cost-effectiveness of any mitigation alternative will be considered in
greater detail through performing benefit-cost project analyses when seeking FEMA mitigation grant
funding for eligible actions associated with this plan.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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In keeping with FEMA requirements for plan updates,the LMSWG evaluated mitigation actions
identified in the previous plan to determine their current implementation status, including if an action was
completed or, if not,whether it should be carried forward for future implementation or deleted from the
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SECTION 6: MITIGATION STRATEGY
mitigation action plan. The results of this evaluation are reflected in the updated mitigation action plan
and in the summary of completed and deleted actions from the 2020 plan update in Table 6.1. Note that
the mitigation action plan in Section 7 presents only those actions currently being pursued for
implementation, including new actions and actions carried forward from the 2020 plan update.
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SECTION 7: MITIGATION ACTION PLAN
7' \4 1111111111111111111111111111111111111111 GA""""""""Illl111111111111111ll'l 0 AC"111111111111111111illillillillillillilliilI 0 ���4 ..............................A �q
Requirement§201.6(c)(3)(iii):[The mitigation strategy section shall include an]action plan describing how the
actions identified in section (c)(3)(ii) will be prioritized, implemented, and administered by the local
jurisdiction. Prioritization shall include a special emphasis on the extent to which benefits are maximized
according to a cost benefit review of the proposed projects and their associated costs.
This section provides the updated mitigation action plan,which was developed to reduce the risk and
vulnerability of people,property, infrastructure, and natural and cultural resources to future disaster
losses. Emphasis was placed on both future and existing development.
Each mitigation action recommended for implementation is listed in these tables along with detail on the
applicable jurisdictions,hazards addressed,the goal and objective addressed,the priority rating,the lead
agency responsible for implementation,potential funding sources for the action, a projected
implementation timeline(noted as the projected timeframe for completion), and the 2025 status and
comments on this status for actions that were carried forward from the 2020 plan.
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SECTION 8: PLAN MAINTENANCE
...............................A �4 \4A 1 14 A "�4 C
Requirement§201.6(c)(4):[The plan maintenance process shall include a]section describing the method
and schedule of monitoring,evaluating,and updating the mitigation plan within a five-year cycle.
Implementation and maintenance of the plan is critical to the overall success of hazard mitigation
planning. This section discusses how the Mitigation Action Plan will be implemented by participating
jurisdictions and outlines the method and schedule for monitoring,updating, and evaluating the plan.
This section also discusses incorporating the plan into existing planning mechanisms and how the public
will continue to be involved in the planning process. It consists of the following three subsections:
8.1 Distribution
8.2 Implementation
8.3 Monitoring,Evaluation, and Enhancement
8.4 Continued Public Involvement
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
8 11111111111
II
Upon adoption of the 2025 Monroe County Local Mitigation Strategy Update, the plan in its entirety will
be posted on the Monroe County Emergency Management Department's website.Notice of its
availability will be distributed to relevant Federal and State agencies, as well as local elected officials.
The plan will be maintained on the Monroe County Emergency Management Department's website for
public access throughout its duration.
...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................8
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
� MISSION IIIIIIIIIIIIIIIIIIIIIIIIII II IIIII IIII IIiliq�N4
ullllll'iiuuuuuuuuuum ���11111111111111111111
uuuuuuuuuuuum uuuuuuuuuuuuu
Each jurisdiction participating in this plan update is responsible for implementing specific mitigation
actions as prescribed in the Mitigation Action Plan(found in Section 7). In the Mitigation Action Plan,
every proposed action is assigned to a specific local department or agency to ensure responsibility and
accountability and increase the likelihood of subsequent implementation. Jurisdiction may update the
actions applicable to their jurisdiction as needed without altering the broader focus of the LMS.
In addition to the assignment of a local lead department or agency, an implementation timeline or a
specific implementation date or window has been assigned to each mitigation action to help assess
whether reasonable progress is being made toward implementation. The participating jurisdictions will
seek outside funding sources to implement mitigation projects in both the pre-disaster and post-disaster
environments. When applicable,potential funding sources have been identified for proposed actions listed
in the Mitigation Action Plan.
An important implementation mechanism that is highly effective and low-cost is integration of the Local
Mitigation Strategy recommendations and their underlying principles into other plans and mechanisms.
Where possible,plan participants will use existing plans and/or programs to implement the Mitigation
Action Plan. LMSWG group members may consider integrating the findings, recommendations, and
actions presented in the LMS into the following plans and ordinances, among others:
— Comprehensive Plans; — Subdivision Ordinances;
— Zoning Ordinances&Land Use Plans; — Building Codes;
n� r e courity,III:IIL... III:II
iii iii iii°:iii iii III IIL...o c III III iii�iii a t ii�r'i �m iii III . 1 , � iii.m.�iii. ..02
IIC:� ,61
SECTION 8: PLAN MAINTENANCE
— Emergency Operations Plans; — Climate Change/Sea Level Rise Plans;
— Capital Improvements Plans; — Small Area Plans; and
— Repetitive Loss Plans; — Transportation Plans.
Monroe County and its jurisdictions acknowledge the risk and the associated effects of hazards such as
high winds,tropical cyclones and storm surge, flooding, and sea level rise. As such, data regarding risk
assessments and options to mitigate such risk are incorporated into existing community planning
mechanisms,which are detailed in each community's individual annexes.
Moving forward, it will be the responsibility of the LMSWG representatives from each participating
jurisdiction to continue to determine and pursue opportunities for integrating the findings,requirements,
and strategies of this plan with other local planning documents. The LMSWG is also responsible for
ensuring that the goals and strategies of new and updated local planning documents for their jurisdictions
or agencies are consistent with the goals and actions of the Local Mitigation Strategy and will not
contribute to increased hazard vulnerability in the planning area. Methods for integration may include:
— Monitoring other planning/program agendas;
— Attending other planning/program meetings;
— Participating in other planning processes; and
— Monitoring community budget meetings for other community program opportunities.
Many identified mitigation initiatives are capital projects,the implementation of which is usually
dependent upon the availability of funding. When such initiatives are prioritized, and funding is sought,
each jurisdiction will comply with its existing rules regarding inclusion of projects in its Capital
Improvement Plan or other budget and planning processes and documents.
Opportunities to integrate the requirements of this plan into other local planning mechanisms shall
continue to be identified through future meetings of the LMSWG and through the five-year review
process described herein. Although it is recognized that there are many possible benefits to integrating
components of this plan into other local planning mechanisms,the development and maintenance of this
stand-alone Local Mitigation Strategy is deemed by the LMSWG to be the most effective and appropriate
method to implement local hazard mitigation actions at this time.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
MISSION MEN
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
MAINTENANCE8,33 ROLE OF LMSWG IN IMPLEMENTATION, MONI 111117111111111110PING AND
With adoption of this plan, each jurisdiction will be responsible for the implementation and maintenance
of their mitigation actions. The LMS Coordinator from Monroe County Emergency Management will
take the lead in all plan monitoring and update procedures. As such, each jurisdiction agrees to continue
their relationship with the LMSWG and:
— Act as a forum for hazard mitigation issues;
— Disseminate hazard mitigation ideas and activities to all participants;
— Pursue the implementation of high-priority, low/no-cost recommended actions;
— Ensure hazard mitigation remains a consideration for community decision makers;
li �iii .d ai,4 IIL...o III iii t lii ii iii*.,m Strategy wi"°W&i,. .: .6
SECTION 8: PLAN MAINTENANCE
— Maintain a vigilant monitoring of multi-objective cost-share opportunities to help the community
implement the plan's recommended actions for which no current funding exists;
— Monitor and assist in implementation and update of this plan;
— Report on plan progress and recommended revisions to the local governing boards; and
— Inform and solicit input from the public.
The LMSWG's primary duty moving forward is to see the plan successfully carried out and report to the
local governing boards,FDEM,FEMA, and the public on the status of plan implementation and
mitigation opportunities. Other duties include reviewing and promoting mitigation proposals, considering
stakeholder concerns about mitigation,passing concerns on to appropriate entities, and providing relevant
information for posting on community websites (and others as appropriate).
Simultaneous to these efforts, it will be important to maintain a constant monitoring of funding
opportunities that can be leveraged to implement some of the costlier recommended actions. This will
include creating and maintaining a bank of ideas on how to meet local match or participation
requirements. When funding does become available, the County will be positioned to capitalize on the
opportunity. Funding opportunities to be monitored include special pre- and post-disaster funds, state and
federal earmarked funds,benefit assessments, and other grant programs, including those that can serve or
support multi-objective applications.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Plan maintenance implies an ongoing effort to monitor and evaluate plan implementation and to update
the plan as progress,roadblocks, or changing circumstances are recognized. The LMS Coordinator will
be responsible for convening the LMSWG and initiating regular reviews. Regular maintenance will take
place through quarterly conference calls and an annual meeting of the LMSWG. The LMSWG will also
convene to review the plan after significant hazard events. The criteria recommended in 44 CFR 201 and
206 will be utilized in reviewing and updating the plan.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
. .3 MAINTENANCE
Evaluation of progress can be achieved by monitoring changes in vulnerabilities identified in the plan.
Changes in vulnerability can be identified by noting:
— Decreased vulnerability as a result of implementing recommended actions;
— Increased vulnerability as a result of failed or ineffective mitigation actions; and/or
— Increased vulnerability as a result of new development(and/or annexation).
Updates to this plan will:
— Consider changes in vulnerability due to project implementation;
— Document success stories where mitigation efforts have proven effective;
— Document areas where mitigation actions were not effective;
— Document any new hazards that may arise or were previously overlooked;
— Incorporate new data or studies on hazards and risks;
— Incorporate new capabilities or changes in capabilities;
— Incorporate growth and development-related changes to asset inventories; and
— Incorporate new project recommendations or changes in project prioritization.
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy J a iii`.m U a iii. .: .6
SECTION 8: PLAN MAINTENANCE
To ensure effectiveness in meeting the goals set forth in this plan,the LMS working group will convene
quarterly via conference call. More specifically, quarterly reviews will monitor changes to the following
information:
— Community growth or change in the past quarter along with updates to community plans.
The implementation status of the mitigation strategy and individual mitigation action items,including
noting completed items or progress made toward completion, amended items, and deleted items due
to changed priorities or otherwise.
— The number of substantially damaged or substantially improved structures by flood zone.
— The renovations and mitigation activities to public infrastructure including water, sewer, drainage,
roads, bridges, gas lines, and buildings.
— The number of building and assets protected or mitigation.
— Natural hazard occurrences that required activation of any Emergency Operations Center(EOC)in
the County and whether the event resulted in a presidential disaster declaration.
— Natural hazard occurrences that were not of a magnitude to warrant activation of the EOC or a federal
disaster declaration but were severe enough to cause damage in the community or closure of
businesses, schools, or public services.
— The dates of hazard events descriptions.
— Documented damages due to the event; include details on closure of places of employment or schools
and the number of days closed, road or bridge closures due to the hazard event and length of time
closed, and an assessment of the number of private and public buildings damaged and whether the
damage was minor, substantial, major, or if buildings were destroyed. The assessment will include
residences,mobile homes, commercial structures, industrial structures, and public buildings, such as
schools and public safety buildings.
2 ANNI,.,,,,,,IAL EVALUATION AND UPDATES
Per Florida Administrative Code Chapter 27P-22, and to ensure the LMS is current and continues to serve
the interest of residents and visitors,the LMSWG will perform annual evaluations. By the end of
September of each year,the LMS Coordinator will notify LMSWG members of the need to identify and
compile revisions brought up through quarterly reviews. Working group members will submit any
proposed revisions to Emergency Management to be discussed at the annual LMSWG meeting. Minor
revisions may be handled by addenda while significant revisions will be submitted to FDEM. The LMS
Coordinator will compile the proposed revisions and submit them to the Department of Community
Affairs and FDEM by the last working day of January. Revisions may be warranted due to:
— Hazard events that have occurred prompting a change in the characterization of risk and vulnerability
or warrant the consideration of additional initiatives;
— Significant changes, such as addition or deletion,to the critical facilities lists;
— Changes to the NFIP's list of Repetitive Loss Properties;
— Changes in develop that result in changes to the characterization of people and property that are at
risk;
— Changes to the list of mitigation initiatives including the addition of new initiatives, or the deletion or
completion of existing initiatives;
— Changes in department organization,regulations, comprehensive plans, and the like; and
— Changes necessary to comply with State and Federal program requirements.
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy wi"m �&i. .: .6
SECTION 8: PLAN MAINTENANCE
In the event of a major hazard event such as a hurricane or tropical storm,the LMSWG will convene after
the event to discuss its impacts and initiate a discussion on how the LMSWG can influence mitigation in
the recovery process. Whether shortly after an event or in response to receiving notice from FDEM that
mitigation funds are available,the LMSWG will consider which project and initiatives will be prioritized.
The LMS Coordinator will be responsible for reconvening the LMSWG for the Five-Year plan update. In
part,this revision will be to incorporate the material collected for the annual updates in the four years
prior. The five-year update will be submitted to FDEM and FEMA Region 4. With this plan update
anticipated to be completed by January 2026,the next plan update for Monroe County will be completed
by January 2031.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
8
IllllhCO .............................. 1,................J
Continued public involvement is imperative to the overall success of the plan's implementation. The
quarterly review process will provide an opportunity to solicit participation from new and existing
stakeholders and to publicize success stories from the plan implementation and seek additional public
comment. Efforts to involve the public in the maintenance, evaluation and revision process may include:
— Advertising LMSWG meetings in the local newspaper,public bulletin boards and/or local
government office buildings;
— Designating willing citizens and private sector representatives as official members of the LMSWG;
— Utilizing local media to update the public of any maintenance and/or review activities;
— Utilizing local government websites to advertise any maintenance and/or review activities;
— Maintaining copies of the plan in public libraries or other appropriate venues;
— Posting annual progress reports on the Plan to local government websites;
— Heavy publicity of the plan and potential ways for the public to be involved after significant hazard
events,tailored to the event that has just happened;
— Keeping websites, social media outlets, etc. updated;
— Drafting articles for the local community newspapers/newsletters;
— Utilizing social media accounts (e.g. Twitter, Facebook).
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
. .
When the LMSWG reconvenes for the five-year update, they will coordinate with all stakeholders
participating in the planning process including those that joined the committee since the planning
process began to update and revise the plan. In reconvening,the LMSWG will be responsible for
coordinating the activities necessary to involve the greater public, including disseminating information
through a variety of media channels detailing the plan update process. As part of this effort,public
meetings will be held and public comments will be solicited on the plan update draft.
li �iii .d ai,4 IIL...o III iii t lii ii iii*.m Strategy wi"m �&i. .: .6
IIC:)E!Ige as 641
SECTION 9: PLAN ADOPTION
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Requirement §201.6(c)(5): [The plan shall include] documentation that the plan has been formally
approved by the governing body of the jurisdiction requesting approval of the plan (e.g., City Council,
County Commissioner,Tribal Council).
The purpose of formally adopting this plan is to secure buy-in, raise awareness of the plan, and formalize
the plan's implementation. The adoption of this plan completes Planning Step 9 (Adopt the Plan)of the
10-step planning process, in accordance with the requirements of DMA 2000. FDEM Approval Letters
and community adoption resolutions are provided on the following pages.
Marvroe County,
IIM u.1 III t oc III III ii t ii g a t ii iiir'i Strategy J a iiir.''m u a iii�, 2,0 2,6
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SECTION 9: PLAN ADOPTION
Placeholder for resolutions
IIMarvroe Courity,III:III III:
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ANNEX A:MONROE COUNTY UNINCORPORATED AREAS
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A.11111111111 ASS
Unincorporated Monroe County and the LMS Working Group provided a local inventory of critical
facilities and community lifelines, which are a priority for mitigation planning and emergency
management. Lifelines are the most fundamental services in the community that,when stabilized, enable
all other aspects of society to function. Table A.1 provides a count of critical facilities by FEMA lifeline
category in unincorporated Monroe County. Figure A-1 through Figure A-7 show the locations of all
critical facilities in unincorporated Monroe County.
Table A.2 provides a detailed inventory of the critical facilities in unincorporated Monroe County,
indicating each facility's FEMA lifeline category, flood zone, 1% annual chance flood depth, sea level
rise, storm surge, and wildfire. More information on hazard vulnerability is provided in the hazard
profiles.
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Facility Type Count of Facility Type Structure Value
Communications 28 $13,095,053
Energy 17 $24,548,908
Food,Hydration,Shelter 14 $92,084,662
Hazardous Materials 2 $238,623
Health and Medical 10 $31,432,297
Safety and Security 35 $26,926,484
Transportation 2 $83,627
Water Systems 190 $73,861,022
Total 298 $262,265,194
Source:LMS Working Group,GIS Analysis
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ANNEX A:MONROE COUNTY UNINCORPORATED AREAS
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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This section contains a summary of the unincorporated Monroe County's asset inventory as well as
hazard profile and vulnerability assessment for those hazards that are spatially defined and have variations
in risk that could be evaluated quantitatively on a jurisdictional level. The hazards included in this section
are: Flood, Sea Level Rise, Storm Surge, and Wildfire.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Table A.3 details the acreage of unincorporated Monroe County's total area by flood zone on the effective
DFIRM; it also shows a comparison to the preliminary DFIRM released in December 2019.
Approximately 94.5 percent of the unincorporated areas of Monroe County falls within the mapped 1%-
annual-chance floodplains. Data in this risk assessment is based off FEMA's 2005 DFIRM. Table
A.4reflects the effective mapped flood hazard zones for unincorporated Monroe County while Table A.5
displays the 2019 preliminary map.
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Effective DFIRM(2005) Preliminary DFIRM(2019) Change from
Flood Zone Acreage
Percent of Acreage Percent of Effective
Total M) Total M) (acres)
A 0 0% 44,683.8 5.2% 44,683.8
AE 618,571.9 71.7 555,564.9 64.4% -63,007.0
VE 196,128.0 22.7% 214,501.5 24.9% 18,373.5
AO 1.1 0.0% 0.0 0.0% -1.1
0.2%Annual
Chance Flood 774.0 0.1% 1,628.8 0.2% 854.8
Hazard
Unshaded X 1,220.6 0.1% 601.4 0.1% -619.2
Open Water 45,809.2 5.3% 45,524.3 5.3% -284.9
Total 862,504.7 100.0% 862,504.7 100.0% 0.0
SFHA Total 8149700.9 94.5% 8149750.2 94.5% 49.3
Source:FEMA Effective DFIRM
Note:The differences between the effective FIRM and the preliminary FIRM are significant will likely still change.These
details are provided here only as a comparison-all further flood analysis is based in the 2005 Effective DFIRM.
Table A.4 and Table A.5 provide building counts and estimated damages by occupancy type for the 1%
annual chance flood event using both the effective and preliminary DFIRM. Figure A-10 and Figure A-11
display the effective and preliminary depth of flooding estimated to occur in these areas during the 1%-
annual-chance flood.
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 1 $535,470 $1,175 $18,807 $19,982 4%
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ANNEX A:MONROE COUNTY UNINCORPORATED AREAS
Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Commercial 1,160 $1,313,331,737 $44,513,622 $146,451,674 $190,965,295 15%
Educational 27 $39,850,538 $413,223 $2,603,402 $3,016,625 8%
Government 436 $284,673,249 $3,355,559 $20,533,335 $23,888,894 8%
Industrial 222 $235,984,688 $2,193,865 $6,446,122 $8,639,987 4%
Religious 34 $44,024,638 $253,922 $1,953,365 $2,207,288 5%
Residential 22,515 $15,775,468,097 $3,439,333,831 $1,712,017,578 $5,151,351,409 33%
Total 24,395 $1796939868,417 $394909065,197 $198909024,283 $59380,0899481 30%
Source:HAZUS,FEMA Effective DFIRM
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 1 $535,470 $17,044 $58,053 $75,097 14%
Commercial 11124 $1,305,064,074 $30,743,787 $100,840,335 $131,584,121 10%
Educational 24 $26,497,162 $463,343 $2,861,760 $3,325,103 13%
Government 448 $233,066,629 $3,444,682 $21,202,524 $24,647,206 11%
Industrial 221 $233,264,423 $2,216,574 $6,506,721 $8,723,295 4%
Religious 31 $36,879,592 $374,490 $2,819,096 $3,193,586 9%
Residential 21,866 $15,099,042,001 $2,836,303,403 $1,410,100,446 $4,246,403,849 28%
Total 23,715 $169934,3499351 $29873,5639322 $19544,3889935 $49417,9529257 26%
Source:HAZUS,FEMA Preliminary DFIRM
Table A.6 provides building counts and values for critical facilities by flood zone in unincorporated
Mecklenburg County.
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Flood Zone Critical Facility Count Structure Value
Zone AE 267 $223,949,644.01
Zone VE 10 $6,192,282.23
Zone X (500-year) 13 $27,296,751.00
Zone X Unshaded 8 $4,826,516.97
Total 298 $262,265,194.21
Source:FEMA Effective DFIRM,LMS Working Group
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ANNEX A:MONROE COUNTY UNINCORPORATED AREAS
Monroe County joined the NFIP emergency program in 1970 and has been a regular participant in the
NFIP since June 1973. Monroe County participates in the Community Rating System and is currently a
Class 3 community. The following tables reflect NFIP policy and claims data for the County categorized
by structure type, flood zone,Pre-FIRM and Post-FIRM.
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Number of Total Insurance in Number of Total of Closed
Structure Type Closed Paid
Policies in Force Premium Force Paid Losses
Losses
Single Family 7,486 $10,820,199 $2,077,201,000 14,377 $222,765,317.49
2-4 Family 730 $866,260 $177,589,000 722 $13,777,814.43
All Other 2,079 $1,478,615 $466,375,000 332 $8,357,211.29
Residential
Non-Residential 542 $2,328,780 $225,461,000 17483 $44,787,653.69
Total 10,837 $15,493,854 $2,946,626,000 16,914 $289,687,996.90
Source: FEMA Community Information System,accessed May 2025
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Number of Number of
Total Insurance in Total of Closed
Flood Zone Policies in Closed Paid
Premium Force Paid Losses
Force Losses
A01-30&AE 10,057 $13,365,093 $2,729,764,000 147232 $251,120,371.82
Zones
A Zones 9 $9,952 $2,392,000 72 $1,602,022.13
V01-30&VE 368 $1,622,434 $92,356,000 2,358 $34,148,318.68
Zones
V Zones 0 $0 $0 32 $309,611.81
D Zones 2 $7,273 $585,000 69 $1,504,732.83
B,C&XZone
Standard 401 $489,102 $121,529,000 79 $411,902.57
Preferred 0 $0 $0 39 $501,600.51
Total 10,837 $15,4939854 $2,946,6269000 16,881 $289,598,560.35
Source: FEMA Community Information System,accessed May 2025
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Number of Number of
Total Insurance in Total of Closed
Flood Zone Policies in 40 Closed Paid
Premium Force Paid Losses
Force Losses
A01-30&AE Zones 2,939 $6,279,259 $668,859,000 7,765 $213,443,257.70
A Zones 0 $0 $0 56 $886,925.88
V01-30&VE Zones 134 $553,909 $28,626,000 1,600 $31,126,867.27
V Zones 0 $0 $0 31 $309,611.81
D Zones 1 $4,348 $335,000 46 $866,611.05
B,C& X Zone 220 $213,035 $58,771,000 74 $612,124.23
Standard 220 $213,035 $58,771,000 54 $289,981.40
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ANNEX A:MONROE COUNTY UNINCORPORATED AREAS
Number of Number of
Total Insurance in Total of Closed
Flood Zone Policies in Closed Paid
Premium Force Paid Losses
Force Losses
Preferred 0 $0 $0 20 $322,142.83
Total 3,294 $7,050,551 $756,591,000 9,572 $247,245,397.94
Source: FEMA Community Information System,accessed May 2025
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Total Insurance in Total of Closed
Flood Zone of Policies Closed Paid
Premium Force Paid Losses
in Force Losses
A01-30&AE 7,118 $7,085,834 $2,060,905,000 6,467 $37,677,114.12
Zones
A Zones 9 $9,952 $2,392,000 16 $715,096.25
VO1-30&VE 234 $1,068,525 $63,730,000 758 $3,021,451.41
Zones
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D Zones 1 $2,925 $250,000 23 $638,121.78
B,C& X Zone 181 $276,067 $62,758,000 44 $301,378.85
Standard 181 $276,067 $62,758,000 25 $121,921.17
Preferred 0 $0 $0 19 $179,457.68
Total 7,543 $8,443,303 $2,190,0359000 7,309 $42,3539162.41
Source: FEMA Community Information System,accessed May 2025
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONTIN(JED NFIP COMPLIANCE
Monroe County entered the NFIP in 1973 by adoption of an ordinance that complies with the requirement
of the program. The Floodplain Management Ordinance specifies standards for residential and non-
residential construction and water supply and sanitary sewer systems that are located in the SFHA. It
prohibits the alteration of sand dunes,mangrove stands, or wetlands if such alterations would increase the
potential for flooding. The dominant standard in the ordinance requires that the lowest floor of buildings
(including manufactured homes)be elevated to or above base flood levels. Enclosures below the elevated
lowest floor are allowed only if they meet requirements specific to the flood zone.
To ensure continued compliance with the NFIP,the County will continue to:
— Enforce the adopted floodplain management ordinance, including reviewing all development
proposals within the SFHA for compliance and inspection of permitted development and unpermitted
activities;
— Maintain records pertaining to development, including flood maps and Letters of Map Change,which
shall be available for public inspection;
— Notify the public when there are proposed changes to the ordinance or FIRMS; and
— Promote the purchase of NFIP flood insurance policies as financial protection.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
ENCLOSURE.53 BELOW ELEVATED BUILDINGS
In 1995, FEMA notified Monroe County that the illegal conversion and occupancy of enclosures below
elevated residential structures had resulted from a deficiency in the County's enforcement of its
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floodplain management regulations. The County was directed to correct the deficiency or face suspension
from the NFIP. The BOCC appointed a task force to address the problem which developed the "Flood
Insurance Inspection Program."NFIP-insured homes with enclosures below the Base Flood Elevation
were to be inspected to identify deficiencies; these were to be corrected in order for flood insurance
policies to be written. Over 2,000 properties had been inspected through 2009; 1,600 had been brought
into compliance. In mid-2014, FEMA ended the pilot program but directed Monroe County to continue
enforcement. Section 122-15 of the Floodplain Management Ordinance requires the County to provide an
inspection upon transfer of property. A report is provided to the new owner regarding any non-
conformities associated with enclosures.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
PEPE TITS
Maps of repetitive loss areas in unincorporated Monroe County are on the following page.
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Table A.11 details the number of all buildings affected by sea level rise in the unincorporated areas of
Monroe County following the NOAA sea level rise projections of intermediate low and intermediate high
scenarios.
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Count
2040 NIL 12,927 4,78695819400 295879195,924 6,494,686,780
Agriculture 1 $267,735 $267,735 $535,470
Commercial 549 $281,946,690 $281,946,690 $535,945,243
Education 19 $5,475,869 $5,475,869 $10,951,738
Government 177 $45,969,577 $45,969,577 $91,300,737
Industrial 69 $21,726,765 $32,590,148 $54,142,286
Religious 16 $10,697,044 $10,697,044 $21,394,089
Residential 12096 $4,420,497,718 $2,210,248,859 $5,780,417,218
2040 N I H 16,573 6,223,4009056 393839967,776 8,403,265,410
Agriculture 1 $267,735 $267,735 $535,470
Commercial 717 $377,546,051 $377,546,051 $724,985,494
Education 21 $7,733,660 $7,733,660 $15,467,320
Government 254 $68,258,644 $68,258,644 $135,456,469
Industrial 108 $38,833,744 $58,250,617 $95,665,834
Religious 22 $13,061,917 $13,061,917 $26,123,834
Residential 15450 $5,717,698,304 $2,858,849,152 $7,405,030,989
Source:HAZUS,NOAA,Monroe County Parcel Data
Figure A-15 and Figure A-16 display NOAA 2040 intermediate low and high sea level rise scenarios for
unincorporated Monroe County. Note that data was not available to assess the impacts of sea level rise on
mainland Monroe. Table A.12 provides building counts and values for critical facilities by FEMA lifeline
that are located in areas categorized with direct exposure to sea level rise based on NOAA intermediate
low and high scenarios.
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2040 NIL 103 $2,968,963.11
NOAA aft 16 $5,349,266.00
2040 N I H 43 $8,079,120.00
Total 162 $16,397,349.11
Source:NOAA, Monroe County LMS Working Group
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Table A.13 summarizes the number of buildings in unincorporated Monroe County that will be impacted
by 100-yr and 500-yr storm surge events. Figure A-17 shows potential storm surge inundation for a 100-
yr storm surge event and Figure A-18 shows inundation for the 500-yr storm surge event.
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Occupancy Structure Value Total Value
Count Content Value
100yr 24,063 $119285,322,571 $6,139,870,304 $17,425,192,875
Agriculture 1 $267,735 $267,735 $535,470
Commercial 1,121 $645,867,962 $645,867,962 $1,291,735,924
Education 24 $13,248,581 $13,248,581 $26,497,162
Government 428 $121,181,468 $121,181,468 $242,362,935
Industrial 226 $96,880,156 $145,320,234 $242,200,390
Religious 32 $20,091,980 $20,091,980 $40,183,960
Residential 22,231 $10,387,784,689 $5,193,892,345 $15,581,677,034
500yr 25,046 $11,628,831,563 $6,36294529972 $17,991,2849535
Agriculture 1 $267,735 $267,735 $535,470
Commercial 1,233 $733,159,071 $733,159,071 $1,466,318,141
Education 26 $15,569,386 $15,569,386 $31,138,772
Government 447 $128,343,371 $128,343,371 $256,686,743
Industrial 231 $98,037,689 $147,056,533 $245,094,222
Religious 35 $22,659,440 $22,659,440 $45,318,880
Residential 23,073 $10,630,794,871 $5,315,397,435 $15,946,192,306
Source:FEMA,NOAA,Monroe County Parcels
Table A.14 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to storm surge based on 100 and 500-year storm surge events.
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100-Year 267 $218,894,322.55
500-Year 14 $12,971,166.00
Total 279 $231,865,488.55
Source:FEMA,NOAA,Monroe County LMS Working Group
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A.2.4 WILDFIRE
Table A.15 summarizes the acreage in unincorporated Monroe County that falls within the Functional
Wildland Urban Interface(WLTI), categorized into zones that describe the wildfire risk mitigation
activities appropriate for each zone. Areas in the Functional WUI are those areas where development and
building structures may intermix with burnable land cover. Approximately, 1 percent of unincorporated
Monroe County is categorized as having direct exposure to wildfire risk within the Functional WiJI.
Table A.75-Functional Wildland Urban Interface,Unincorporated Monroe County
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Direct Exposure 3,608 1%
Indirect Exposure 6,518 2%
Critical Fireshed 457638 14%
Sources of Ember Load to Buildings 9,347 3%
Little to No Exposure 3,863 1%
loom Water 251,004 78%
Source:Southern Wildfire Risk Assessment
Figure A-19 depicts the Functional WUI for Monroe County,including incorporated areas. Figure A-20
depicts Burn Probability based on landscape conditions,percentile weather,historical ignition patterns,
and historical prevention and suppression efforts. Fire Intensity Scale, which indicates the potential
severity of fire based on fuel loads,topography,and other factors, is depicted in Figure A-21.
Functional WUI areas are distributed throughout the county; the mainland is largely outside of any direct
exposure in the Functional WUI. The biggest clusters of direct exposure are shown through out
unincorporated areas of the Keys. Burn probability is low throughout the unincorporated areas on the
Keys with some swaths of moderate burn probability in the Middle and Upper Keys areas. On the
mainland,burn probability is low near the coast but much of the area included in Everglades National
Park has a high burn probability. There are pockets of high fire intensity throughout the unincorporated
areas of the County; areas with particularly large clusters include Big Pine Key and the mainland areas of
Monroe County.
Table A.16 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to wildfire risk on the Functional WUI scale.
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 304
ANNEX A:MONROE COUNTY UNINCORPORATED AREAS
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Type Critical Facility Count Structure Value
Communications 6 $5,110,285.00
Energy 0 $0
Food, Hydration,Shelter 1 $0
Hazardous Materials 2 $238,623.00
Health and Medical 0 $0
Safety and Security 0 $0
Transportation 0 $0
Water Systems 11 $782,752.00
Total 20 $6,1319660.00
Source:Southern Wildfire Risk Assessment,Monroe County LMS Working Group
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ANNEX B:CITY OF KEY COLONY BEACH
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The City of Key Colony Beach and the LMS Working Group provided a local inventory of critical
facilities and community lifelines,which are a priority for mitigation planning and emergency
management. Lifelines are the most fundamental services in the community that,when stabilized, enable
all other aspects of society to function. Table B.1 provides a count of critical facilities by FEMA lifeline
category in the City of Key Colony Beach. Figure B-1 shows the locations of all critical facilities in the
City of Key Colony Beach.
Table B.2 provides a detailed inventory of the critical facilities in the City of Key Colony Beach,
indicating each facility's FEMA lifeline category, flood zone, 1% annual chance flood depth, sea level
rise, storm surge, and wildfire. More information on hazard vulnerability is provided in the hazard
profiles.
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Facility Type Count of Facility Type Structure Value
Communications 0 $0
Energy 0 $0
Food,Hydration,Shelter 0 $0
Hazardous Materials 0 $0
Health and Medical 0 $0
Safety and Security 3 $2,705,814
Transportation 0 $0
Water Systems 1 $3,500,000
E- Total 4 $69205,814
Source:LMS Working Group,GIS Analysis
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ANNEX B:CITY OF KEY COLONY BEACH
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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This section contains a summary of the City of Key Colony Beach's asset inventory as well as hazard
profile and vulnerability assessment for those hazards that are spatially defined and have variations in risk
that could be evaluated quantitatively on a jurisdictional level. The hazards included in this section are:
Flood, Sea Level Rise, Storm Surge, and Wildfire.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Table B.3 details the acreage of Key Colony Beach's total area by flood zone on the effective DFIRM; it
also shows a comparison to the preliminary DFIRM released in December 2019. 100 percent of Key
Colony Beach falls within the mapped 1%-annual-chance floodplains; this drops to 99.6 percent on the
2019 preliminary maps. The data in this risk assessment is based off FEMA's 2005 DFIRM. Figure B-2
reflects the effective mapped flood hazard zones for Key Colony Beach while Figure B-3 displays the
2019 preliminary map.
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Effective DFIRM(2005) Preliminary DFIRMChange from
(2019)
Effective
Percent of Percent of
Flood Zone Acreage Acreage (acres)
Total(%) Tota I(%)
AE 251.7 94.7% 245.5 92.4% -6.2
VE 14.2 5.3% 19.1 7.2% 4.9
AO 0.0 0.0% 0.0 0.0% 0.0
0.2%Annual
Chance Flood 0.0 0.0% 1.2 0.4% 1.2
Hazard
Unshaded X 0.0 0.0% 0.0 0.0% 0.0
Open Water 0.0 0.0% 0.0 0.0% 0.0
Total 265.9 100.0 % 265.9 100.0% 0.0
SFHA Total 265.9 100.0% 264.7 99.6% -1.2
Source:FEMA Effective DFIRM
Note:The differences between the effective FIRM and the preliminary FIRM are significant will likely still change.These
details are provided here only as a comparison-all further flood analysis is based in the 2005 Effective DFIRM.
Table B.4 and Table B.5 provide building counts and estimated damages by occupancy type for the 1%
annual chance flood event using both the effective and preliminary DFIRM. Figure B-4 and Figure B-5
display the effective and preliminary depth of flooding estimated to occur in these areas during the 1%-
annual-chance flood.
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ANNEX B:CITY OF KEY COLONY BEACH
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 10 $27,492,958 $145,558 $456,727 $602,285 2%
Educational 0 $0 $0 $0 $0 0%
Government 8 $5,092,002 $25,435 $162,749 $188,185 4%
Industrial 0 $0 $0 $0 $0 0%
Religious 0 $0 $0 $0 $0 0%
Residential 11409 $1,007,183,974 $178,886,110 $88,847,218 $267,733,328 27%
Total 1,427 $1,039,768,934 $1799057,103 $89,466,695 $268,5231,798 26%
Source:HAZUS,FEMA Effective DFIRM
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Agriculture 0 $0 $0 $0 $0 0%
Commercial 10 $27,492,958 $102,883 $301,117 $404,001 1%
Educational 0 $0 $0 $0 $0 0%
Government 8 $5,092,002 $40,712 $250,685 $291,397 6%
Industrial 0 $0 $0 $0 $0 0%
Religious 0 $0 $0 $0 $0 0%
Residential 1,381 $982,326,817 $188,595,751 $94,362,208 $282,957,959 29%
Total 1,399 $1,0149911,777 $1889739,347 $9499149010 $2839653,357 28%
Source:HAZUS,FEMA Preliminary DFIRM
Table B.6 provides building counts and values for critical facilities by flood zone in the City of Key
Colony Beach.
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Zone AE 4 $6,205,814
Zone X(500-year) 0 $0
Zone X Unshaded 0 $0
Total 4 $6,205,814
Source:FEMA Effective DFIRM,LMS Working Group
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ANNEX B:CITY OF KEY COLONY BEACH
The City of Key Colony Beach joined the NFIP emergency program in 1970 and has been a regular
participant in the NFIP since July 1971. The City is a participant in the Community Rating System and is
a Class 6 community. The following tables reflect NFIP policy and claims data for the City categorized
by structure type, flood zone,Pre-FIRM and Post-FIRM.
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Number of Number of
Total Insurance in Total of Closed
Structure Type Policies in Closed Paid
Premium Force Paid Losses
Force Losses
Single Family 393 $870,846 $113,712,000 456 $17,069,853.90
2-4 Family 94 $205,153 $24,524,000 189 $5,813,692.17
All Other 382 $394,112 $78,719,000 217 $13,592,513.80
Residential
Non-Residential 13 $100,970 $5,782,000 47 $4,681,081.64
Total 882 $1,571,081 $222,737,000 909 $41,157,141.51
Source: FEMA Community Information System,accessed May 2025
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Insurance in Total of Closed
Flood Zone of Policies Total Premium Closed Paid
Force Paid Losses
in Force Losses
A01-30&AE Zones 875 $1,506,266 $220,255,000 889 $39,948,170.57
A Zones 0 $0 $0 1 $0.00
VO1-30&VE Zones 7 $64,815 $2,482,000 18 $1,166,716.94
B,C&XZone
Standard 0 $0 $0 1 $42,254.00
Total 882 $19571,081 $2229737,000 909 $41,157,141.51
Source: FEMA Community Information System,accessed May 2025
"""'""""°°IIIIIIII�����IIIIIII ' IIIIIII'�������II����I III """""" IIIIIII IIIIIII IIIIIIP IIIIIII IIIIIII IIIIIIP IIIIIII'I�����I�� IIIt IIIIIII'�����IIIIIII� °°°°°IIIIIII'°°°°°°IIIIIII IIIIIII'�����.IIIIIII Number of Number of
Total Insurance in Total of Closed
Flood Zone Policies in Closed Paid
Premium Force Paid Losses
Force Losses
A01-30&AE Zones 475 $987,708 $107,328,000 553 $32,718,903.26
A Zones 0 $0 $0 1 $0.00
VO1-30&VE Zones 3 $46,177 $1,666,000 14 $1,157,605.84
Total 478 $1,033,885 $108,994,000 568 $33,876,509.10
Source: FEMA Community Information System,accessed November 2020
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Number of Total Insurance in Number of Tota I of
Flood Zone Policies in . Closed Paid Closed Paid
Premium Force
Force Losses Losses
A01-30&AE Zones 400 $518,558 $112,927,000 336 $7,229,267.31
VO1-30&VE Zones 4 $18,638 $816,000 4 $9,111.10
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ANNEX B:CITY OF KEY COLONY BEACH
Number of Total Insurance in Number of Total of
Flood Zone Policies in . Closed Paid Closed Paid
Premium Force
Force Losses Losses
B,C& X Zone 0 $0 $0 1 $42,254.00
Standard 0 $0 $0 1 $42,254.00
Total 404 $5379196 $113,7439000 341 $71,280,632.41
Source: FEMA Community Information System,accessed May 2025
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONTINt JEDNFIP COMPLIANCE
The City entered the NFIP in 1971 by adoption of an ordinance that complies with the requirement of the
program. To continue compliance with the NFIP, the City will:
— Enforce the adopted floodplain management ordinance, including reviewing all development
proposals in the SFHA and enforcing the requirements of the ordinance, and inspecting both
permitted development and unpermitted activities;
— Maintain records pertaining to floodplain development, including flood maps and Letters of Map
Change, which shall be available for public inspection;
— Notify the public when there are proposed changes to the ordinance or FIRMs;
— Implement activities recognized by the NFIPs CRS, such as maintaining elevation certificates,
sending annual NFIP mailing to local lenders,realtors, and insurance companies, and keeping a
library of NFIP materials at City Hall; and
— Promote the purchase of NFIP flood insurance policies as financial protection.
IIM:. LA iii iiisc lii( iii ai,4II IIL... c z)III III iii t iii a iii a
ANNEX B:CITY OF KEY COLONY BEACH
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
. . SEA LEVEL S
Table B.11 details the number of all buildings affected by sea level rise in the City of Key Colony Beach
following the NOAA sea level rise projections of intermediate low and intermediate high scenarios.
"'"""' Illlllh°°IIIIIII IIIIIII11111...... AIkIIIII Affected Sea ......... IIIIIII IIIIIII of IIIKeyIIIIIII IIIIIII°° IIIIIIIIII°� IIIIIII Estimated Estimated Content
Occupancy Building Structure Value Total Value
Count Value
2040 NIL 1,597 $831,8669662 $487,877,535 $1,319,744,198
Agriculture 0 $0 $0 $0
Commercial 4 $2,387,093 $2,387,093 $4,774,186
Education 0 $0 $0 $0
Government 2 $1,514,513 $1,514,513 $3,029,026
Industrial 0 $0 $0 $0
Religious 0 $0 $0 $0
Residential 630 $284,910,225 $142,455,112 $261,272,822
2040 N I H 825 378,920,023 191,926,559 353,076,204
Agriculture 0 $0 $0 $0
Commercial 4 $2,387,093 $2,387,093 $0
Education 0 $0 $0 $0
Government 8 $2,546,001 $2,546,001 $5,092,002
Industrial 0 $0 $0 $0
Religious 0 $0 $0 $0
Residential 813 $373,986,929 $186,993,465 $347,984,202
Source:HAZUS,NOAA,Monroe County Parcel Data
Figure B-6 and Figure B-7 display NOAA 2040 intermediate low and high sea level rise scenarios for the
City of Key Colony Beach. Table B.12 provides building counts and values for critical facilities by
FEMA lifeline that are located in areas categorized with direct exposure to sea level rise based on NOAA
intermediate low and high scenarios.
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2040 N I H 1 $100,758.90
Total 1 $100,758.90
Source:NOAA, Monroe County LMS Working Group
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Table B.13 summarizes the number of buildings in the City of Key Colony Beach that will be impacted
by 100-yr and 500-yr storm surge events. Figure B-8 shows potential storm surge inundation for a 100-yr
storm surge event and Figure B-9 shows inundation for the 500-yr storm surge event.
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Count Content Value
100yr 1,427 $6879748,463 $352,020,471 $11,039,768,934
Agriculture 0 $0 $0 $0
Commercial 10 $13,746,479 $13,746,479 $27,492,958
Education 0 $0 $0 $0
Government 8 $2,546,001 $2,546,001 $5,092,002
Industrial 0 $0 $0 $0
Religious 0 $0 $0 $0
Residential 1,409 $671,455,983 $335,727,991 $1,007,183,974
500yr 19427 $687,748,463 $352,020,471 $1,039,768,934
Agriculture 0 $0 $0 $0
Commercial 10 $13,746,479 $13,746,479 $27,492,958
Education 0 $0 $0 $0
Government 8 $2,546,001 $2,546,001 $5,092,002
Industrial 0 $0 $0 $0
Religious 0 $0 $0 $0
Residential 1,409 $671,455,983 $335,727,991 $1,007,183,974
Source:FEMA,NOAA,Monroe County Parcels
Table B.14 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to storm surge based on 100 and 500-year storm surge events.
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100-Year 3 $5,605,814
500-Year 1 $600,000
Total 4 $6,205,814
Source:FEMA,NOAA,Monroe County LMS Working Group
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ANNEX B:CITY OF KEY COLONY BEACH
8.2.4 WILDFIRE
Table B.15 summarizes the acreage in the City of Key Colony Beach that falls within the Functional
Wildland Urban Interface(WLTI), categorized into zones that describe the wildfire risk mitigation
activities appropriate for each zone. Areas in the Functional WUI are those areas where development and
building structures may intermix with burnable land cover. Approximately, 6 percent of Key Colony
Beach is categorized as having direct exposure to wildfire risk within the Functional WUI.
Table B.75-Functional Wildland Urban Interface,City of Key Colony Beach
Direct Exposure 17 6%
Indirect Exposure 0%
Critical Fireshed 2 1%
Sources of Ember Load to Buildings 0%
Little to No Exposure 233 90%
Water 6 2%
Source:Southern Wildfire Risk Assessment
Figure B-10 depicts the Functional WUI for Key Colony Beach. Figure B-11 depicts Burn Probability
based on landscape conditions,percentile weather,historical ignition patterns, and historical prevention
and suppression efforts. Fire Intensity Scale,which indicates the potential severity of fire based on fuel
loads,topography, and other factors, is depicted in Figure B-12.
Majority of the City is located within the Functional WLTI with pockets of direct exposure being spread
evenly throughout. Where there is a probability of burning,in the northwestern corner of the City,the
burn probability is rated as very low;the remainder of the City has no burn probability associated with it.
There are small pockets of high and moderate potential fire intensity,but much of the city has no fire
intensity rating.
Table B.16 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to wildfire risk on the Functional WUI scale.
Table B.16-Critical Facilities Exposed to Wildfire,City of Key Colony Beach
Type Critical Facility Count Structure Value
Communications 0 $0
Energy 0 $0
Food,Hydration,Shelter 0 $0
Hazardous Materials 0 $0
Health and Medical 0 $0
Safety and Security 0 $0
Transportation 0 $0
Water Systems 0 $0
Total 0 $O
Source:Southern Wildfire Risk Assessment,Monroe County LMS Working Group
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 337
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MISSION 11411111111111111
SEEN
C.11111111111 ASS
The City of Key West and the LMS Working Group provided a local inventory of critical facilities and
community lifelines,which are a priority for mitigation planning and emergency management. Lifelines
are the most fundamental services in the community that,when stabilized, enable all other aspects of
society to function. Table C.1 provides a count of critical facilities by FEMA lifeline category in the City
of Key West. Figure C-1 shows the locations of all critical facilities in the City of Key West.
Table C.2 provides a detailed inventory of the critical facilities in the City of Key West, indicating each
facility's FEMA lifeline category, flood zone, 1% annual chance flood depth, sea level rise, storm surge,
and wildfire. More information on hazard vulnerability is provided in the hazard profiles.
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Facility Type Count of Facility Type Structure Value
Communications 0 $0
Energy 7 $3,953,014
Food,Hydration,Shelter 22 $227,076,971
Hazardous Materials 1 $6,496,246
Health and Medical 5 $12,863,340
Safety and Security 20 $123,374,417
Transportation 2 $9,291,598
Water Systems 6 $10,765,921
Total 63 $39398219507
Source:LMS Working Group,GIS Analysis
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ANNEX C:CITY OF KEY WEST
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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This section contains a summary of the City of Key West's asset inventory as well as hazard profile and
vulnerability assessment for those hazards that are spatially defined and have variations in risk that could
be evaluated quantitatively on a jurisdictional level. The hazards included in this section are: Flood, Sea
Level Rise, Storm Surge, and Wildfire.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Table C.3 details the acreage of Key West's total area by flood zone on the effective DFIRM; it also
shows a comparison to the preliminary DFIRM released in December 2019. Slightly over 89 percent of
Key West falls within the mapped 1%-annual-chance floodplains; this area would grow to 92.9 percent on
the 2019 preliminary maps. The data in this risk assessment is based off FEMA's 2005 DFIRM. Figure
C-2 reflects the effective mapped flood hazard zones for the City of Key West while Figure C-3 displays
the 2019 preliminary map.
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Effective DFIRM(2005) Preliminary DFIRM(2019) Change from
Flood Zone Acreage
Percent of Acreage Percent of Effective
Total M) Total M) (acres)
AE 2,928.6 76.1% 3,298.1 85.7% 369.5
VE 497.7 12.9% 255.9 6.7% -241.8
AO 2.4 0.1% 19.1 0.5% 16.7
0.2%Annual
Chance Flood 277.4 7.2% 136.1 3.5% -141.3
Hazard
Unshaded X 141.9 3.7% 138.8 3.6% -3.1
Open Water 0.0 0.0% 0.0 0.0% 0.0
Total 3,848.0 100.0% 3,848.0 100.0% 0.0
SFHA Total 39428.7 89.1% 3,573.1 92.9% 144.4
Source:FEMA Effective DFIRM
Note:The differences between the effective FIRM and the preliminary FIRM are significant will likely still change.These
details are provided here only as a comparison-all further flood analysis is based in the 2005 Effective DFIRM.
Table CA and Table C.5 provide building counts and estimated damages by occupancy type for the 1%
annual chance flood event using both the effective and preliminary DFIRM. Figure C-4 and Figure C-5
display the effective and preliminary depth of flooding estimated to occur in these areas during the 1%-
annual-chance flood.
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ANNEX C:CITY OF KEY WEST
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 1,322 $2,874,224,712 $57,616,223 $189,835,920 $247,452,143 9%
Educational 1 $1,278,998 $57,555 $401,503 $459,058 36%
Government 867 $752,646,337 $5,149,489 $31,112,664 $36,262,153 5%
Industrial 75 $55,875,723 $304,284 $898,065 $1,202,349 2%
Religious 29 $34,683,776 $166,689 $1,197,420 $1,364,110 4%
Residential 6,666 $4,845,068,494 $824,785,208 $4071226,587 $1,232,011,795 25%
Total 8,960 $8,563,778,040 $888,079,449 $630,672,160 $1,5181,751,608 18%
Source:HAZUS,FEMA Effective DFIRM
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 1,627 $3,180,252,543 $50,762,576 $166,340,569 $217,103,145 7%
Educational 16 $34,807,794 $120,210 $750,281 $870,490 3%
Government 871 $807,907,705 $2,110,302 $13,100,445 $15,210,747 2%
Industrial 82 $66,776,878 $424,716 $1,270,548 $1,695,264 3%
Religious 49 $57,685,978 $194,760 $1,576,699 $1,771,459 3%
Residential 8,256 $5,975,803,647 $1,200,456,414 $593,970,490 $1,794,426,904 30%
Total 10,901 $10,123,234,546 $1,254,068,978 $7771,009,031 $2,031,078,009 20%
Source:HAZUS,FEMA Preliminary DFIRM
Table C.6 provides building counts and values for critical facilities by flood zone in the City of Key West.
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Zone AE 46 $247,591,777.19
Zone VE 9 $90,440,819.60
Zone X(500-year) 3 $7,665,996.66
Zone X Unshaded 5 $46,499,799.62
Total 63 $392,198,393.07
Source:FEMA Effective DFIRM,LMS Working Group
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ANNEX C:CITY OF KEY WEST
The City of Key West joined the NFIP emergency program in 1970 and has been a regular participant in
the NFIP since September 1971. The City is a participant in the Community Rating System and is a Class
5 community. The following tables reflect NFIP policy and claims data for the City categorized by
structure type, flood zone,Pre-FIRM and Post-FIRM.
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Number of Number of
Total Insurance in Total of Closed
Structure Type Policies in Closed Paid
Premium Force Paid Losses
Force Losses
Single Family 2,973 $5,658,356 $872,546,000 3,883 $141,299,563.25
2-4 Family 736 $1,395,401 $182,203,000 540 $16,203,490.04
All Other 1,038 $724,912 $217,141,000 322 $7,388,847.29
Residential
Non-Residential 505 $2,751,715 $257,038,000 993 $48,624,293.19
Total 5,252 $10,530,384 $1,528,928,000 5,738 $213,516,193.77
Source: FEMA Community Information System,accessed May 2025
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Number Number of
Insurance in Total of Closed
Flood Zone of Policies Total Premium Closed Paid
Force Paid Losses
in Force Losses
A01-30&AE Zones 4,411 $9,427,930 $1,243,644,000 5,306 $207,165,795.09
A Zones 0 $0 $0 1 $0.00
AO Zones 4 $6,484 $713,000 3 $73,283.01
V01-30&VE Zones 23 $258,996 $12,549,000 160 $4,788,462.71
B,C&XZone
Standard 814 $836,974 $272,022,000 190 $1,239,829.76
Preferred 0 $0 $0 79 $285,667.23
Total 5,252 $10,5309384 $1,528,928,000 5,739 $213,553,037.80
Source: FEMA Community Information System,accessed May 2025
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Number Number of
Total Insurance in Total of Closed
Flood Zone of Policies Closed Paid
Premium Force Paid Losses
in Force Losses
A01-30&AE Zones 2,367 $6,998,333 $674,585,000 4,403 $190,615,182.98
A Zones 0 $0 $0 1 $0.00
AO Zones 2 $3,004 $345,000 3 $73,283.01
V01-30&VE Zones 9 $143,571 $5,947,000 84 $3,533,705.11
B,C& X Zone 560 $567,626 $189,678,000 187 $1,388,898.33
Standard 560 $567,626 $189,678,000 126 $1,162,484.05
Preferred 0 $0 $0 62 $263,258.31
Total 2,938 $7,712,534 $870,555,000 4,678 $195,611,069.43
Source: FEMA Community Information System,accessed May 2025
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Total Insurance in Total of Closed
Flood Zone Policies in Closed Paid
Premium Force Paid Losses
Force Losses
A01-30&AE Zones 2,044 $2,429,597 $569,059,000 903 $16,550,612.11
AO Zones 2 $3,480 $368,000 0 $0.00
VO1-30&VE Zones 14 $115,425 $6,602,000 76 $1,254,757.60
B,C&X Zone 254 $269,348 $82,344,000 81 $99,754.63
Standard 254 $269,348 $82,344,000 64 $77,345.71
Preferred 0 $0 $0 17 $22,408.92
Total 39735 $297539629 $957,3119400 19009 $15,828,271.60
Source: FEMA Community Information System,accessed May 2025
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONTINUED FP COMPLIANCE
The City entered the NFIP in 1971 by adoption of an ordinance that complies with the requirement of the
program. The ordinance has been revised several times, including updates that aligned with the statewide
effort to coordinate local ordinances with the flood provisions of the Florida Building Code. To continue
compliance with the NFIP, the City will:
— Enforce the adopted floodplain management ordinance, including reviewing all development
proposals in any floodplain and enforcing the requirements of the ordinance, and inspecting both
permitted development and unpermitted activities;
— Maintain records pertaining to floodplain development, including flood maps and Letters of Map
Change, which shall be available for public inspection;
— Notify the public when there are proposed changes to the ordinance or FIRMs;
— Implement activities recognized by the NFIPs CRS including brochure publication and distribution
and annual mailers;
— Promote the purchase of NFIP flood insurance policies as financial protection;
— Maintain a consolidated GIS database for monitoring floodplain related permitting reviews;
— City Floodplain Administrator has a seat on the City's Development Review Committee, is an
integral plan reviewer for all floodplain related permit applications and is in the variance pre-review
network required of all applications within the SFHA; and
— Continuing to implement higher regulatory standards including,but not limited to,multi-phase
elevation certifications,minimum 12-inch elevation of the first finished floor outside the SFHA, and a
one-year substantial improvement cumulative period of calculations.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
REPETITIVE LOSS PROPERTIES
A map of repetitive loss areas in Key West is on the following page.
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ANNEX C:CITY OF KEY WEST
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
C.
2 SEA LEVEL S
Table C.11 details the number of all buildings affected by sea level rise in the City of Key West following
the NOAA sea level rise projections of intermediate low and intermediate high scenarios.
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Estimated Estimated Content
Occupancy Building Structure Value Total Value
Count Value
2040 NIL 41,091 2,26695319613 1,63192149285 39023,307,051
Agriculture 0 $0 $0 $0
Commercial 747 $790,784,670 $790,784,670 $1,307,377,327
Education 1 $639,499 $639,499 $1,278,998
Government 176 $160,186,817 $160,186,817 $320,341,179
Industrial 15 $16,137,560 $24,206,341 $40,325,406
Religious 19 $12,010,850 $12,010,850 $23,353,462
Residential 3133 $1,286,772,216 $643,386,108 $1,330,630,680
2040 N I H 5,915 3,221,033,878 2,248,839,779 4,197,433,423
Agriculture 0 $0 $0 $0
Commercial 913 $1,011,166,180 $1,011,166,180 $1,709,019,545
Education 1 $639,499 $639,499 $1,278,998
Government 357 $213,658,831 $213,658,831 $427,285,205
Industrial 19 $18,935,571 $28,403,357 $47,320,433
Religious 22 $13,310,027 $13,310,027 $25,951,816
Residential 4603 $1,963,323,770 $981,661,885 $1,986,577,427
Source:HAZUS,NOAA,Monroe County Parcel Data
Figure C-7 and Figure C-8 display NOAA 2040 intermediate low and high sea level rise scenarios for the
City of Key West. Table C.12 provides building counts and values for critical facilities by FEMA lifeline
that are located in areas categorized with direct exposure to sea level rise based on NOAA intermediate
low and high scenarios.
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Highest Level of SLR Critical Facility Count Structure Value
2040 NIL 6 $11,177,787.81
NOAA aft 5 $75,149,048.17
2040 N I H 4 $76,471,087.88
Total 15 $162,7979923.86
Source:NOAA, Monroe County LMS Working Group
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ANNEX C:CITY OF KEY WEST
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
" S I13
Table C.13 summarizes the number of buildings in the City of Key West that will be impacted by 100-yr
and 500-yr storm surge events. Figure C-9 shows potential storm surge inundation for a 100-yr storm
surge event and Figure C-10 shows inundation for the 500-yr storm surge event.
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Occupancy Structure Value Total Value
Count Content Value
100yr 11,257 $693219676,484 $4,253,337,538 $10,575,014,023
Agriculture 0 $0 $0 $0
Commercial 1,692 $1,675,821,726 $1,675,821,726 $3,351,643,452
Education 16 $17,403,897 $17,403,897 $34,807,794
Government 885 $408,973,878 $408,973,878 $817,947,756
Industrial 82 $26,710,751 $40,066,127 $66,776,878
Religious 51 $29,377,588 $29,377,588 $58,755,176
Residential 8,531 $4,163,388,644 $2,081,694,322 $6,245,082,966
500yr 119731 $6,613,685,998 $4,46095119225 $11,074,1979223
Agriculture 0 $0 $0 $0
Commercial 1,868 $1,767,783,254 $1,767,783,254 $3,535,566,509
Education 16 $17,403,897 $17,403,897 $34,807,794
Government 897 $431,771,965 $431,771,965 $863,543,930
Industrial 84 $28,006,740 $42,010,111 $70,016,851
Religious 56 $34,363,855 $34,363,855 $68,727,709
Residential 8,810 $4,334,356,287 $2,167,178,143 $6,501,534,430
Source:FEMA,NOAA,Monroe County Parcels
Table C.14 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to storm surge based on 100 and 500-year storm surge events.
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Storm Surge Category Critical Facility Count Structure Value
100-Year 56 $363,631,704.04
500-Year 3 $13,432,305.62
Total 59 $377,064,009.67
Source:FEMA,NOAA,Monroe County LMS Working Group
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ANNEX C:CITY OF KEY WEST
C.2.4 WILDFIRE
Table C.15 summarizes the acreage in the City of Key West that falls within the Functional Wildland
Urban Interface(WLTI), categorized into zones that describe the wildfire risk mitigation activities
appropriate for each zone. Areas in the Functional WUI are those areas where development and building
structures may intermix with burnable land cover. Approximately, 4 percent of Key West is categorized
as having direct exposure to wildfire risk within the Functional WUI.
Table C.75-Functional Wildland Urban Interface,City of Key West
Direct Exposure 142 14%,zo
Indirect Exposure 0%
Critical Fireshed 460 12%
Sources of Ember Load to Buildings 266 7%
Little to No Exposure 2781 73%
Water 163 4%
Source:Southern Wildfire Risk Assessment
Figure G11 depicts the Functional WUI for Key West. Figure C-12 depicts Burn Probability based on
landscape conditions,percentile weather,historical ignition patterns, and historical prevention and
suppression efforts. Fire Intensity Scale,which indicates the potential severity of fire based on fuelloads,
topography, and other factors, is depicted in Figure G 13.
Functional WUI areas are focused along the outer edges of the City,with the central,downtown area
being excluded from the Functional WUI. Where there is a rating for burn probability,mainly in southern
and eastern Key West, it is very low; otherwise,much of the city is without a burn probability rating.
There are pockets of moderate to high characteristic fire intensity, especially around the outer edges of the
City,but a large swath of the City is not rated on the characteristic fire intensity scale.
Table C.16 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to wildfire risk on the Functional WUI scale.
Table C.16-Critical Facilities Exposed to Wildfire,City of Key West
Type Critical Facility Count Structure Value
Communications 0 $0
Energy 0 $0
Food,Hydration,Shelter 0 $0
Hazardous Materials 0 $0
Health and Medical 0 $0
Safety and Security 0 $0
Transportation 0 $0
Water Systems 1 $24,684.77
Total 1 $24,684.77
Source:Southern Wildfire Risk Assessment,Monroe County LMS Working Group
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 360
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ANNEX D:CITY OF LAYTON
C Y 0 ..............................AY 04
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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ASS
The City of Layton and the LMS Working Group provided a local inventory of critical facilities and
community lifelines,which are a priority for mitigation planning and emergency management. Lifelines
are the most fundamental services in the community that,when stabilized, enable all other aspects of
society to function. Table D.1 provides a count of critical facilities by FEMA lifeline category in the City
of Layton. Figure D-1 shows the locations of all critical facilities in the City of Layton.
Table D.2 provides a detailed inventory of the critical facilities in the City of Layton, indicating each
facility's FEMA lifeline category, flood zone, 1% annual chance flood depth, sea level rise, storm surge,
and wildfire. More information on hazard vulnerability is provided in the hazard profiles.
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Facility Type Count of Facility Type Structure Value
Communications 1 $0
Energy 0 $0
Food,Hydration,Shelter 0 $0
Hazardous Materials 0 $0
Health and Medical 0 $0
Safety and Security 1 $337,480
Transportation 0 $0
Water Systems 3 $0
Total 5 $337,480
Source:LMS Working Group,GIS Analysis
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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This section contains a summary of the City of Layton's asset inventory as well as hazard profile and
vulnerability assessment for those hazards that are spatially defined and have variations in risk that could
be evaluated quantitatively on a jurisdictional level. The hazards included in this section are: Flood, Sea
Level Rise, Storm Surge, and Wildfire.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Table D.3 details the acreage of Layton's total area by flood zone on the effective DFIRM; it also shows a
comparison to the preliminary DFIRM released in December 2019. 100 percent of Layton falls within the
mapped 1%-annual-chance floodplains; this would remain the same on the 2019 preliminary maps. The
data in this risk assessment is based off FEMA's 2005 DFIRM. Figure D-2 reflects the effective mapped
flood hazard zones for Layton while Figure D-3 displays the 2019 preliminary map.
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Effective DFIRM(2005) Preliminary DFIRM(2019) Change from
Flood Zone Percent of Percent of Effective
Acreage Total(%) Acreage Total(%) (acres)
A 0 0.0% 0 0.0%
AE 123.2 86.0% 114.6 80.0% 8.6
AO 0.0 0.0% 0.0 0.0% 0.0
VE 20.0 14.0% 28.6 20.0% -8.6
0.2%Annual
Chance Flood 0.0 0.0% 0.0 0.0% 0.0
Hazard
Unshaded X 0.0 0.0% 0.0 0.0% 0.0
Open Water 0.0 0.0% 0.0 0.0% 0.0
Total 44.5 100.0% 44.5 100.0% 0.0
SFHA Total 143.2 100.0% 143.2 100.0% 0.0
Source:FEMA Effective DFIRM
Note:The differences between the effective FIRM and the preliminary FIRM are significant will likely still change.These
details are provided here only as a comparison-all further flood analysis is based in the 2005 Effective DFIRM.
Table DA and Table D.5 provide building counts and estimated damages by occupancy type for the 1%
annual chance flood event using both the effective and preliminary DFIRM. Figure D-4 and Figure D-5
display the effective and preliminary depth of flooding estimated to occur in these areas during the 1%-
annual-chance flood.
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 13 $18,183,056 $391,884 $1,139,479 $1,531,362 8%
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ANNEX D:CITY OF LAYTON
Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Educational 0 $0 $0 $0 $0 0%
Government 10 $3,179,284 $163,886 $993,307 $1,157,193 36%
Industrial 0 $0 $0 $0 $0 0%
Religious 2 $828,760 $12,880 $95,999 $108,878 13%
Residential 143 $51,718,801 $16,078,231 $7,940,346 $24,018,577 46%
Total 168 $739909,902 $169646,881 $109169,130 $269816,011 36%
Source:HAZUS,FEMA Effective DFIRM
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 13 $18,183,056 $319,309 $986,368 $1,305,677 7%
Educational 0 $0 $0 $0 $0 0%
Government 10 $3,179,284 $99,210 $621,411 $720,621 23%
Industrial 0 $0 $0 $0 $0 0%
Religious 2 $828,760 $12,880 $95,999 $108,878 13%
Residential 143 $51,718,801 $14,420,901 $7,167,424 $21,588,325 42%
Total 168 $739909,902 $149852,299 $89871,202 $2307231,501 32%
Source:HAZUS,FEMA Preliminary DFIRM
Table D.6 provides building counts and values for critical facilities by flood zone in the City of Layton.
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Flood Zone Critical Facility Count Structure Value
Zone AE 5 $337,480.00
Zone X (500-year) 0 $0
Zone X Unshaded 0 $0
Total 5 $337948 0.0 0
Source:FEMA Effective DFIRM,LMS Working Group
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ANNEX D:CITY OF LAYTON
The City of Layton joined the NFIP emergency program in July 1971 and has been a regular participant
since. The City is a participant in the Community Rating System and is a Class 5 community. The
following tables reflect NFIP policy and claims data for the City categorized by structure type, flood
zone, Pre-FIRM and Post-FIRM.
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Number of Number of
Total Insurance in Total of Closed
Structure Type Policies in Closed Paid
Premium Force Paid Losses
Force Losses
Single Family 64 $103,110 $16,916,000 69 $1,780,963.67
2-4 Family 6 $3,962 $1,390,000 5 $330,795.82
All Other 1 $2,574 $500,000 0 $0.00
Residential
Non-Residential 12 $62,312 $6,109,000 14 $1,568,618.52
Total 83 $171,958 $24,915,000 88 $3,680,378.01
Source: FEMA Community Information System,accessed May 2025
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Number Number of
Insurance in Total of Closed
Flood Zone of Policies Total Premium Closed Paid
Force Paid Losses
in Force Losses
A01-30&AE Zones 83 $171,958 $24,915,000 87 $3,680,378.01
VO1-30&VE Zones 0 $0 $0 1 $0.00
Total 83 $171,958 $24,915,000 88 $3,680,378.01
Source: FEMA Community Information System,accessed May 2025
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Number of Number of
Total Insurance in Total of Closed
Flood Zone Policies in 40 Closed Paid
Premium Force Paid Losses
Force Losses
A01-30&AE Zones 27 $112,528 $7,281,000 56 $3,314,452.11
VO1-30&VE Zones 0 $0 $0 1 $0.00
Total 27 $112,528 $7,2819000 57 $3,314,452.11
Source: FEMA Community Information System,accessed May 2025
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Premium Force
Force Losses Losses
A01-30&AE Zones 56 $59,430 $17,634,000 31 $365,925.90
Total 56 $59,430 $171,634,000 31 $365,925.90
Source: FEMA Community Information System,accessed May 2025
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ANNEX D:CITY OF LAYTON
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONTINLIED NFIP COMPLIANCE
The City entered the NFIP in 1971 by adoption of an ordinance that complies with the requirement of the
program. To continue compliance with the NFIP,the City will:
— Enforce the adopted floodplain management ordinance, including reviewing all development
proposals in any flood hazard area and enforcing the requirements of the ordinance, and inspecting
both permitted development and unpermitted activities;
— Maintain records pertaining to floodplain development, including flood maps and Letters of Map
Change, which shall be available for public inspection;
— Notify the public when there are proposed changes to the ordinance or FIRMs;
— Maintain a 3' freeboard requirement;
— Limits size of accessory structures in the SFHA;
— Implement activities recognized by the NFIPs CRS; and
— Promote the purchase of NFIP flood insurance policies as financial protection.
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ANNEX D:CITY OF LAYTON
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
. SEA LEVEL S
Table D.11 details the number of all buildings affected by sea level rise in the City of Layton following
the NOAA sea level rise projections of intermediate low and intermediate high scenarios.
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Estimated Estimated Content
Occupancy Building Structure Value Total Value
Count Value
2040 NIL 127 32,1009227 19,4869261 48,663,286
Agriculture 0 $0 $0 $0
Commercial 7 $4,868,273 $4,868,273 $9,736,546
Education 0 $0 $0 $0
Government 10 $1,589,642 $1,589,642 $3,039,206
Industrial 0 $0 $0 $0
Religious 2 $414,380 $414,380 $828,760
Residential 108 $25,227,932 $12,613,966 $35,058,774
2040 N I H 143 38,085,839 2394279465 58,4659366
Agriculture 0 $0 $0 $0
Commercial 8 $6,765,068 $6,765,068 $13,530,136
Education 0 $0 $0 $0
Government 10 $1,589,642 $1,589,642 $3,039,206
Industrial 0 $0 $0 $0
Religious 2 $414,380 $414,380 $828,760
Residential 123 $29,316,749 $14,658,374 $41,067,264
Source:HAZUS,NOAA,Monroe County Parcel Data
Figure D-6 and Figure D-7 display NOAA 2040 intermediate low and high sea level rise scenarios for the
City of Layton. Table D.12 provides building counts and values for critical facilities by FEMA lifeline
that are located in areas categorized with direct exposure to sea level rise based on NOAA intermediate
low and high scenarios.
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Highest Level of SLR Critical Facility Count Structure Value
2040 NIL 3 $0
NOAA aft 0 $0
2040 NIH 1 $0
Total 4 $O
Source:NOAA, Monroe County LMS Working Group
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.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
� SURGE
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Table D.13 summarizes the number of buildings in the City of Layton that will be impacted by 100-yr and
500-yr storm surge events. Figure D-8 shows potential storm surge inundation for a 100-yr storm surge
event and Figure D-9 shows inundation for the 500-yr storm surge event.
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Occupancy Structure Value Total Value
Building Count Content Value
100yr 168 $459574,751 $28,335,151 $73,909,902
Agriculture 0 $0 $0 $0
Commercial 13 $9,091,528 $9,091,528 $18,183,056
Education 0 $0 $0 $0
Government 10 $1,589,642 $1,589,642 $3,179,284
Industrial 0 $0 $0 $0
Religious 2 $414,380 $414,380 $828,760
Residential 143 $34,479,201 $17,239,600 $51,718,801
500yr 168 $459574,751 $28,3359151 $73,909,902
Agriculture 0 $0 $0 $0
Commercial 13 $9,091,528 $9,091,528 $18,183,056
Education 0 $0 $0 $0
Government 10 $1,589,642 $1,589,642 $3,179,284
Industrial 0 $0 $0 $0
Religious 2 $414,380 $414,380 $828,760
Residential 143 $34,479,201 $17,239,600 $51,718,801
Source:FEMA,NOAA,Monroe County Parcels
Table D.14 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to storm surge based on 100 and 500-year storm surge events.
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Storm Surge Category Critical Facility Count Structure Value
100-Year 5 $337,480.00
500-Year 0 $0
Total 5 $337,480.00
Source:FEMA,NOAA,Monroe County LMS Working Group
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ANNEX D:CITY OF LAYTON
D.2.4 WILDFIRE
Table D.15 summarizes the acreage in the City of Layton that falls within the Functional Wildland Urban
Interface(WLTI), categorized into zones that describe the wildfire risk mitigation activities appropriate for
each zone. Areas in the Functional WUI are those areas where development and building structures may
intermix with burnable land cover. Approximately, 10 percent of the City of Layton is categorized as
having direct exposure to wildfire risk within the Functional WiJI.
Table D.75-Functional Wildland Urban Interface,City of Layton
1111 Rill I�i fllil� 11111 711 il I il M11 il 11 �r1i il III 11 il Till� I ii I i=11 1111 Irl ill i ic mll�
Direct Exposure 14 10%
Indirect Exposure - 0%
Critical Fireshed 20 14%
Sources of Ember Load to Buildings 34 23%
Little to No Exposure 51 36%
Water 25 17%
Source:Southern Wildfire Risk Assessment
Figure D-10 depicts the Functional WUI for Layton. Figure D-11 depicts Burn Probability based on
landscape conditions,percentile weather,historical ignition patterns, and historical prevention and
suppression efforts. Fire Intensity Scale,which indicates the potential severity of fire based on fuelloads,
topography, and other factors, is depicted in Figure D-12.
Almost all of the outer edge of the City of Layton is within the Functional WUI and rated with direct
exposure to wildfire. The conservation half of the city is within the Function WUI and rated with
primarily sources of ember load to buildings and critical fireshded. Where there is a rating for burn
probability,mainly in the eastern half of the City, it is low; otherwise,much of the developed portion of
the city is without a burn probability rating. There eastern half of the City has moderate characteristic fire
intensity,but the developed half of the City has very few areas with any ratings on the characteristic fire
intensity scale.
Table D.16 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to wildfire risk on the Functional WUI scale.
Table D.16-Critical Facilities Exposed to Wildfire,City of Layton
Type Critical Facility Count Structure Value
Communications 0 $0
Energy 0 $0
Food,Hydration,Shelter 0 $0
Hazardous Materials 0 $0
Health and Medical 0 $0
Safety and Security 0 $0
Transportation 0 $0
Water Systems 0 $0
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 402
ANNEX D:CITY OF LAYTON
Type Critical Facility Count Structure Value
Total 0 $0
Source:Southern Wildfire Risk Assessment,Monroe County LMS Working Group
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ASS ���11411111111111111
The City of Marathon and the LMS Working Group provided a local inventory of critical facilities and
community lifelines,which are a priority for mitigation planning and emergency management. Lifelines
are the most fundamental services in the community that,when stabilized, enable all other aspects of
society to function. Table E.1 provides a count of critical facilities by FEMA lifeline category in the City
of Marathon. Figure E-1 shows the locations of all critical facilities in the City of Marathon.
Table E.2 provides a detailed inventory of the critical facilities in the City of Marathon, indicating each
facility's FEMA lifeline category, flood zone, 1% annual chance flood depth, sea level rise, storm surge,
and wildfire. More information on hazard vulnerability is provided in the hazard profiles.
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Facility Type Count of Facility Type Structure Value
Communications 0 $0
Energy 3 $4,700,817
Food,Hydration,Shelter 6 $96,682,422
Hazardous Materials 0 $0
Health and Medical 6 $23,262,174
Safety and Security 22 $56,975,281
Transportation 1 $2,500,387
Water Systems 8 $3,802,861
Total 46 $18799231,941
Source:LMS Working Group,GIS Analysis
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This section contains a summary of the City of Marathon's asset inventory as well as hazard profile and
vulnerability assessment for those hazards that are spatially defined and have variations in risk that could
be evaluated quantitatively on a jurisdictional level. The hazards included in this section are: Flood, Sea
Level Rise, Storm Surge, and Wildfire.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
E2.7 FLOOD
Table E.3 details the acreage of Marathon's total area by flood zone on the effective DFIRM; it also
shows a comparison to the preliminary DFIRM released in December 2019. 100 percent of Marathon falls
within the mapped 1%-annual-chance floodplains; this would drop to 99.6 percent on the 2019
preliminary maps. The data in this risk assessment is based off FEMA's 2005 DFIRM. Figure E-2 reflects
the effective mapped flood hazard zones for Marathon while Figure E-3 displays the 2019 preliminary
map.
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Effective DFIRM(2005) Preliminary DFIRM(2019) Change from
Flood Zone Percent of Percent of Effective
Acreage Total(%) Acreage Total(%) (acres)
AE 4,857.5 87.6% 4,664.8 84.1% -192.7
VE 686.9 12.4% 860.3 15.5% 173.4
AO 0.0 0.0% 0.0 0.0% 0.0
0.2%Annual
Chance Flood 0.3 0.0% 18.4 0.3% 18.1
Hazard
Unshaded X 0.0 0.0% 1.3 0.0% 1.3
Open Water 0.0 0.0% 0.0 0.0% 0.0
Total 5,544.7 10 0.0% 5,544.7 10 0.0% 0.0
SFHA Total 59544.4 100.0% 5,525.1 99.6% -19.3
Source:FEMA Effective DFIRM
Note:The differences between the effective FIRM and the preliminary FIRM are significant will likely still change.These
details are provided here only as a comparison-all further flood analysis is based in the 2005 Effective DFIRM.
Table EA and Table E.5 provide building counts and estimated damages by occupancy type for the 1%
annual chance flood event using both the effective and preliminary DFIRM. Figure E-4 and Figure E-5
display the effective and preliminary depth of flooding estimated to occur in these areas during the 1%-
annual-chance flood.
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ANNEX E:CITY OF MARATHON
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 758 $869,428,472 $29,487,582 $100,851,165 $130,338,747 15%
Educational 12 $5,922,994 $230,417 $1,475,593 $1,706,010 29%
Government 124 $259,360,140 $526,201 $3,303,194 $3,829,394 1%
Industrial 118 $61,538,466 $1,067,323 $3,263,081 $4,330,404 7%
Religious 25 $20,601,826 $114,051 $732,345 $846,396 4%
Residential 5,151 $2,727,540,614 $489,333,939 $242,928,441 $732,262,380 27%
Total 6,188 $3,944,392,514 $520,759,513 $352,5531,818 $873,3131,331 22%
Source:HAZUS,FEMA Effective DFIRM
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 758 $869,428,472 $34,578,072 $118,673,109 $153,251,181 18%
Educational 12 $5,922,994 $229,001 $1,474,146 $1,703,146 29%
Government 124 $259,360,140 $1,014,307 $6,277,122 $7,291,429 3%
Industrial 118 $61,538,466 $1,400,440 $4,342,163 $5,742,603 9%
Religious 25 $20,601,826 $137,610 $1,112,229 $1,249,839 6%
Residential 5,079 $2,680,775,404 $639,200,660 $318,045,297 $957,245,957 36%
Total 6,116 $39897,627,303 $676,560,090 $449,924,066 $1,126,484,156 29%
Source:HAZUS,FEMA Preliminary
Table E.6 provides building counts and values for critical facilities by flood zone in the City of Marathon.
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Zone AE 46 $187,297,378.29
Zone X(500-year) 0 $0
Zone X Unshaded 0 $0
Total 46 $187,297,378.29
Source:FEMA Effective DFIRM,LMS Working Group
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ANNEX E:CITY OF MARATHON
The City of Marathon joined the NFIP through regular entry in October 2000. The City is a participant in
the Community Rating System and is a Class 6 community. The following tables reflect NFIP policy and
claims data for the City categorized by structure type, flood zone, Pre-FIRM and Post-FIRM.
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Number of Number of
Total Insurance in Total of Closed
Structure Type Policies in Closed Paid
Premium Force Paid Losses
Force Losses
Single Family 1,623 $2,903,588 $450,686,000 1,957 $68,393,049.00
2-4 Family 167 $271,460 $42,503,000 266 $12,136,739.03
All Other 735 $653,254 $159,348,000 143 $13,864,399.33
Residential
Non-Residential 238 $1,110,114 $105,717,000 359 $18,332,687.28
Total 2,763 $4,938,416 $758,254,000 2,725 $112,726,874.64
Source: FEMA Community Information System,accessed May 2025
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Number Number of
Insurance in Total of Closed
Flood Zone of Policies Total Premium Closed Paid
Force Paid Losses
in Force Losses
A01-30&AE Zones 2,666 $4,525,798 $733,221,000 2,566 $104,796,731.64
VO1-30&VE Zones 96 $411,123 $24,783,000 159 $7,930,143.00
B,C&XZone
Standard 1 $1,495 $250,000 0 $0.00
Total 29763 $4,9389416 $75892549000 2,725 $112,726,874.64
Source: FEMA Community Information System,accessed May 2025
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Total Insurance in Total of Closed
Flood Zone of Policies Closed Paid
Premium Force Paid Losses
in Force Losses
A01-30&AE 1,103 $2,788,627 $264,900,000 1,654 $94,297,144.12
Zones
VO1-30&VE 42 $196,128 $10,537,000 109 $7,070,900.18
Zones
Total 19145 $2,984,755 $275,437,000 1,763 $101,368,044.30
Source: FEMA Community Information System,accessed May 2025
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Number of Number of
Total Insurance in Total of Closed
Flood Zone Policies in Closed Paid
Premium Force Paid Losses
Force Losses
A01-30& AE 1,563 $1,737,171 $468,321,000 912 $10,499,587.52
Zones
VO1-30&VE Zones 54 $214,995 $14,246,000 50 $859,242.82
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ANNEX E:CITY OF MARATHON
Number of Number of
Total Insurance in Total of Closed
Flood Zone Policies in Closed Paid
Premium Force Paid Losses
Force Losses
B,C& X Zone 1 $1,495 $250,000 0 $0.00
Standard 1 $1,495 $250,000 0 $0.00
Total 1,618 $1,9531,661 $482,817,000 962 $111,358,830.34
Source: FEMA Community Information System,accessed May 2025
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONTINt JEDNFIP COMPLIANCE
The City entered the NFIP when it incorporated in 2000 by adoption of an ordinance that complies with
the requirement of the program. To continue compliance with the NFIP,the City will:
— Enforce the adopted floodplain management ordinance, including reviewing all development
proposals in any flood hazard area and enforcing the requirements of the ordinance, and inspecting
both permitted development and unpermitted activities;
— Maintain records pertaining to floodplain development, including flood maps and Letters of Map
Change, which shall be available for public inspection;
— Notify the public when there are proposed changes to the ordinance or FIRMs;
— Implement activities recognized by the NFIPs; and
— Promote the purchase of NFIP flood insurance policies as financial protection;
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ANNEX E:CITY OF MARATHON
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
E2. SEA LEVEL S
Table E.11 details the number of all buildings affected by sea level rise in the City of Marathon following
the NOAA sea level rise projections of intermediate low and intermediate high scenarios.
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Estimated Estimated Content
Occupancy Building Structure Value Total Value
Count Value
2040 NIL 29725 1,041,7649486 6029575,349 1,4131,372,770
Agriculture 0 $0 $0 $0
Commercial 254 $137,211,467 $137,211,467 $243,893,516
Education 2 $421,401 $421,401 $842,802
Government 27 $15,228,649 $15,228,649 $30,457,297
Industrial 22 $4,319,827 $6,479,741 $10,799,569
Religious 6 $1,885,040 $1,885,040 $3,770,080
Residential 2414 $882,698,102 $441,349,051 $1,123,609,506
2040 N I H 3,859 1,449,7319265 8599486,387 11,965,590,897
Agriculture 0 $0 $0 $0
Commercial 358 $181,892,197 $181,892,197 $324,704,952
Education 7 $2,241,358 $2,241,358 $2,047,110
Government 58 $66,098,197 $66,098,197 $132,196,395
Industrial 35 $6,819,033 $10,228,550 $16,868,760
Religious 10 $5,371,690 $5,371,690 $10,743,381
Residential 3391 $1,187,308,789 $593,654,395 $1,479,030,299
Source:HAZUS,NOAA,Monroe County Parcel Data
Figure E-6 and Figure E-7 display NOAA 2040 intermediate low and high sea level rise scenarios for the
City of Marathon. Table E.12 provides building counts and values for critical facilities by FEMA lifeline
that are located in areas categorized with direct exposure to sea level rise based on NOAA intermediate
low and high scenarios.
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2040 NIL 1 $118,015.00
NOAA aft 3 $642,403.12
2040 N I H 3 $1,863,914.00
Total 7 $2,624,332.12
Source:NOAA, Monroe County LMS Working Group
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ANNEX E:CITY OF MARATHON
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
2. SUR(1013E
Table E.13 summarizes the number of buildings in the City of Marathon that will be impacted by 100-yr
and 500-yr storm surge events. Figure E-8 shows potential storm surge inundation for a 100-yr storm
surge event and Figure E-9 shows inundation for the 500-yr storm surge event.
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Occupancy Count Value
100yr 5,989 $293549625,316 $19490,2679792 $31,844,893,108
Agriculture 0 $0 $0 $0
Commercial 756 $434,226,459 $434,226,459 $868,452,918
Education 12 $2,961,497 $2,961,497 $5,922,994
Government 122 $129,190,625 $129,190,625 $258,381,250
Industrial 118 $24,615,386 $36,923,080 $61,538,466
Religious 25 $10,300,913 $10,300,913 $20,601,826
Residential 4,956 $1,753,330,435 $876,665,217 $2,629,995,652
500yr 5,991 $293559113,093 $19490,755,569 $3,84598689662
Agriculture 0 $0 $0 $0
Commercial 758 $434,714,236 $434,714,236 $869,428,472
Education 12 $2,961,497 $2,961,497 $5,922,994
Government 122 $129,190,625 $129,190,625 $258,381,250
Industrial 118 $24,615,386 $36,923,080 $61,538,466
Religious 25 $10,300,913 $10,300,913 $20,601,826
Residential 4,956 $1,753,330,435 $876,665,217 $2,629,995,652
Source:FEMA,NOAA,Monroe County Parcels
Table E.14 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to storm surge based on 100 and 500-year storm surge events.
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100-Year 45 $173,531,619.29
500-Year 1 $13,765,759.00
Total 46 $187,297,378.29
Source:FEMA,NOAA,Monroe County LMS Working Group
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ANNEX E:CITY OF MARATHON
E.2.4 WILDFIRE
Table E.15 summarizes the acreage in the City of Marathon that falls within the Functional Wildland
Urban Interface(WLTI), categorized into zones that describe the wildfire risk mitigation activities
appropriate for each zone. Areas in the Functional WUI are those areas where development and building
structures may intermix with burnable land cover. Approximately, 9 percent of the City of Marathon is
categorized as having direct exposure to wildfire risk within the Functional WiJI.
Table E.75-Functional Wildlarid Urban Interface,City of Marathon
Ago
Direct Exposure 507 9%
Indirect Exposure 0%
Critical Fireshed 17803 33%
Sources of Ember Load to Buildings 697 13%
Little to No Exposure 2,124 39%
Water 265 5%
Source:Southern Wildfire Risk Assessment
Figure E-10 depicts the Functional WUI for Marathon. Figure E-11 depicts Burn Probability based on
landscape conditions,percentile weather,historical ignition patterns, and historical prevention and
suppression efforts. Fire Intensity Scale,which indicates the potential severity of fire based on fuel loads,
topography, and other factors, is depicted in Figure E-12.
Much of the City of Marathon is within the Functional WUI; small areas of direct exposure are found
along the outer edge of the City with larger groups of critical ire shed being found on Fat Deer Key,
Long Point Key, and Boot Key. Where there is a rating for burn probability, scattered throughout the
City, it is low;however,there are some larger groupings of moderate to high burn probability located on
the eastern and western sides of the City. There are small areas of higher characteristic fire intensity
particularly in northeastern Marathon,but large swaths of the City are not rated on the characteristic fire
intensity scale. Areas outside of the Functional WUI are the largest areas rated for characteristic fire
intensity.
Table E.16 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to wildfire risk on the Functional WUI scale.
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 430
ANNEX E:CITY OF MARATHON
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Communications 0 $0
Energy 0 $0
Food, Hydration,Shelter 0 $0
Hazardous Materials 0 $0
Health and Medical 0 $0
Safety and Security 1 $1,548,250.00
Transportation 0 $0
Water Systems 1 $118,015.00
Total 2 $196669265.00
Source:Southern Wildfire Risk Assessment,Monroe County LMS Working Group
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The Islamorada Village of Islands and the LMS Working Group provided a local inventory of critical
facilities and community lifelines,which are a priority for mitigation planning and emergency
management. Lifelines are the most fundamental services in the community that,when stabilized, enable
all other aspects of society to function. Table F.I provides a count of critical facilities by FEMA lifeline
category in the Islamorada Village of Islands. Figure F-I shows the locations of all critical facilities in
Islamorada.
Table F.2 provides a detailed inventory of the critical facilities in Islamorada, indicating each facility's
FEMA lifeline category, flood zone, I%annual chance flood depth, sea level rise, storm surge, and
wildfire. More information on hazard vulnerability is provided in the hazard profiles.
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Facility Type Count of Facility Type Structure Value
Communications 0 $0
Energy 2 $17,839,784
Food,Hydration,Shelter 8 $89,810,667
Hazardous Materials 0 $0
Health and Medical 3 $1,877,977
Safety and Security 12 $57,334,259
Transportation 0 $0
Water Systems 7 $2,086,707
Total 32 $169,899,327
Source:LMS Working Group,GIS Analysis
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This section contains a summary of Islamorada's asset inventory as well as hazard profile and
vulnerability assessment for those hazards that are spatially defined and have variations in risk that could
be evaluated quantitatively on a jurisdictional level. The hazards included in this section are: Flood, Sea
Level Rise, Storm Surge, and Wildfire.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Table F.3 details the acreage of Islamorada's total area by flood zone on the effective DFIRM; it also
shows a comparison to the preliminary DFIRM released in December 2019.Nearly 93 percent of
Islamorada falls within the mapped 1%-annual-chance floodplains; this would drop to approximately 90
percent on the 2019 preliminary maps. The data in this risk assessment is based off FEMA's 2005
DFIRM. Figure F-2 reflects the effective mapped flood hazard zones for Islamorada while Figure F-3
displays the 2019 preliminary map.
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Effective DFIRM(2005) Preliminary DFIRM(2019) Change from
Flood Zone Percent of Percent of Effective
Acreage Total(%) Acreage Total(%) (acres)
AE 3,412.5 75.7% 3,538.3 78.5% 125.8
VE 755.6 16.8% 503.4 11.2% -252.2
AO 0.0 0.0% 0.0 0.0% 0.0
0.2%Annual 144.1 3.2% 357.0 7.9% 212.9
Chance Flood
Hazard
Unshaded X 194.4 4.3% 107.9 2.4% -86.5
Open Water 0.0 0.0% 0.0 0.0% 0.0
Total 4,506.6 100.0% 4,506.6 100.0% 0.0
SFHA Total 49168.1 92.5% 49041.8 89.7% -126.3
Source:FEMA Effective DFIRM
Note:The differences between the effective FIRM and the preliminary FIRM are significant will likely still change.These
details are provided here only as a comparison-all further flood analysis is based in the 2005 Effective DFIRM.
Table F.4 and Table F.5 provide building counts and estimated damages by occupancy type for the 1%
annual chance flood event using both the effective and preliminary DFIRM. Figure F-4 and Figure F-5
display the effective and preliminary depth of flooding estimated to occur in these areas during the 1%-
annual-chance flood.
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 600 $737,500,997 $14,927,694 $49,892,178 $64,819,872 9%
Educational 7 $11,854,160 $51,584 $311,423 $363,007 3%
Government 40 $138,199,770 $165,698 $1,009,905 $1,175,603 1%
Industrial 29 $23,295,509 $130,815 $378,057 $508,873 2%
Religious 13 $16,410,732 $23,214 $175,326 $198,539 1%
Residential 4,865 $3,478,873,862 $582,951,224 $289,259,509 $872,210,733 25%
Total 5,554 $4,406,135,030 $598,250,229 $341,026,397 $9391,276,627 21%
Source:HAZUS,FEMA Effective DFIRM
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Total Total Value Estimated
Occupancy Buildings (Building& BuildingEstimated Estimated Loss
Type g Content Loss Total Damage Ratio
with Loss Contents) Damage
Agriculture 0 $0 $0 $0 $0 0%
Commercial 10 $27,492,958 $102,883 $301,117 $404,001 1%
Educational 0 $0 $0 $0 $0 0%
Government 8 $5,092,002 $40,712 $250,685 $291,397 6%
Industrial 0 $0 $0 $0 $0 0%
Religious 0 $0 $0 $0 $0 0%
Residential 1,381 $982,326,817 $188,595,751 $94,362,208 $282,957,959 29%
Total 1,399 $1,014,911,777 $188,739,347 $9499149010 $2839653,357 28%
Source:HAZUS,FEMA Preliminary
Table F.6 provides building counts and values for critical facilities by flood zone in the Islamorada
Village of Islands.
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Flood Zone Critical Facility Count Structure Value
Zone AE 20 $107,843,434.72
Zone X(500-year) 3 $19,087,836.24
Zone X Unshaded 8 $42,968,056.98
Total 31 $169,899,327.95
Source:FEMA Effective DFIRM,LMS Working Group
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ANNEX F:ISLAMORADA VILLAGE OF ISLANDS
Islamorada Village of Islands joined the NFIP through regular entry in October 1998. The City is a
participant in the Community Rating System and is a Class 6 community. The following tables reflect
NFIP policy and claims data for the City categorized by structure type, flood zone, Pre-FIRM and Post-
FIRM.
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Number of Number of
Total Insurance in Total of Closed
Structure Type Policies in Closed Paid
Premium Force Paid Losses
Force Losses
Single Family 1,602 $2,585,928 $485,538,000 703 $20,072,802.70
2-4 Family 125 $145,102 $29,856,000 40 $959,902.14
All Other 1,062 $563,258 $243,383,000 85 $7,040,870.20
Residential
Non-Residential 256 $1,426,280 $122,993,000 253 $22,267,927.12
Total 3,045 $4,720,568 $881,770p000 1,081 $50,341,502.16
Source: FEMA Community Information System,accessed May 2025
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Number Number of
Insurance in Total of Closed
Flood Zone of Policies Total Premium Closed Paid
Force Paid Losses
in Force Losses
A01-30&AE Zones 2,730 $4,022,397 $787,930,000 934 $43,244,463.24
VO1-30&VE Zones 159 $471,875 $40,626,000 122 $6,569,007.93
B,C&XZone
Standard 156 $226,296 $53,214,000 12 $427,791.74
Preferred 0 $0 $0 13 $100,239.25
Total 3,045 $49720,568 $88197709000 19081 $50,341,502.16
Source: FEMA Community Information System,accessed May 2025
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Number of Tota I of
of Total I nsu ra nce i n
Flood Zone Closed Paid Closed Paid
Policies Premium Force
in Force Losses Losses
A01-30 &AE 635 $2,047,386 $185,003,000 579 $37,677,610.42
Zones
VO1-30 &VE 27 $158,698 $7,678,000 71 $4,195,599.48
Zones
B, C &X Zone 36 $63,930 $12,843,000 14 $275,984.56
Standard 36 $63,930 $12,843,000 9 $207,063.71
Preferred 0 $0 $0 5 $68,920.85
Total 698 $2r270p014 $2059524pOOO 664 $42,149,194.46
Source: FEMA Community Information System,accessed May 2025
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ANNEX F:ISLAMORADA VILLAGE OF ISLANDS
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Number of Number of
Total Insurance in Total of Closed
Flood Zone Policies in Closed Paid
Premium Force Paid Losses
Force Losses
A01-30&AE Zones 2,095 $1,975,011 $602,927,000 355 $5,566,852.82
VO1-30&VE Zones 132 $313,177 $32,948,000 51 $2,373,408.45
B,C&X Zone 120 $162,366 $40,371,000 11 $252,046.43
Standard 120 $162,366 $40,371,000 3 $220,728.03
Preferred 0 $0 $0 8 $31,318.40
Total 2,347 $2,450,554 $67692469000 417 $8,192,307.70
Source: FEMA Community Information System,accessed May 2025
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
CONTINUED NFIP COMPLIANCE
Islamorada entered the NFIP when it incorporated in 1997 by adoption of an ordinance that complies with
the requirement of the program. To continue compliance with the NFIP,the Village will:
— Enforce the adopted floodplain management ordinance, including reviewing all development
proposals in the SFHA and enforcing the requirements of the ordinance, and inspecting both
permitted development and unpermitted activities;
— Maintain records pertaining to floodplain development, including flood maps and Letters of Map
Change, which shall be available for public inspection;
— Notify the public when there are proposed changes to the ordinance or FIRMs;
— Implement activities recognized by the NFIPs CRS; and
— Promote the purchase of NFIP flood insurance policies as financial protection;
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ANNEX F:ISLAMORADA VILLAGE OF ISLANDS
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
F.2 SEA LEVEL S
Table F.I I details the number of all buildings affected by sea level rise in the Islamorada Village of
Islands following the NOAA sea level rise projections of intermediate low and intermediate high
scenarios.
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Estimated Estimated Content
Occupancy Building Structure Value Value Total Value
Count
2040 NIL 2,057 1,087,2859617 6059981,179 1,4951,980,796
Agriculture 0 $0 $0 $0
Commercial 139 $111,194,875 $111,194,875 $218,337,005
Education 0 $0 $0 $0
Government 7 $2,237,700 $2,237,700 $4,475,399
Industrial 9 $4,512,392 $6,768,587 $11,280,979
Religious 2 $2,219,383 $2,219,383 $4,438,766
Residential 1900 $967,121,267 $483,560,634 $1,257,448,646
2040 N I H 3,021 1,579,159,152 899,8829199 2,107,998,210
Agriculture 0 $0 $0 $0
Commercial 290 $204,316,757 $204,316,757 $346,912,272
Education 2 $1,487,904 $1,487,904 $2,975,807
Government 8 $2,321,746 $2,321,746 $4,643,491
Industrial 12 $4,721,989 $7,082,984 $11,804,973
Religious 5 $3,034,861 $3,034,861 $6,069,722
Residential 2704 $1,363,275,895 $681,637,948 $1,735,591,944
Source:HAZUS,NOAA,Monroe County Parcel Data
Figure F-6 and Figure F-7 display NOAA 2040 intermediate low and high sea level rise scenarios for the
Islamorada Village of Islands. Table F.12 provides building counts and values for critical facilities by
FEMA lifeline that are located in areas categorized with direct exposure to sea level rise based on NOAA
intermediate low and high scenarios.
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Highest Level of SLR Critical Facility Count Structure Value
2040 NIL 1 $1,613,267.00
NOAA aft 1 $20,857,424.00
2040 N I H 2 $191,204.00
Total 4 $22,661,895.00
Source:NOAA, Monroe County LMS Working Group
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ANNEX F:ISLAMORADA VILLAGE OF ISLANDS
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Table F.13 summarizes the number of buildings in Islamorada Village of Islands that will be impacted by
100-yr and 500-yr storm surge events. Figure F-8 shows potential storm surge inundation for a 100-yr
storm surge event and Figure F-9 shows inundation for the 500-yr storm surge event.
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Estimated Building Structure Value Estimated Content Total Value
Occupancy Count Value
100yr 5,620 $297609303,061 $19605,849,956 $4,366,153,017
Agriculture 0 $0 $0 $0
Commercial 629 $382,233,262 $382,233,262 $764,466,523
Education 7 $5,927,080 $5,927,080 $11,854,160
Government 37 $34,468,736 $34,468,736 $68,937,473
Industrial 30 $9,444,577 $14,166,865 $23,611,441
Religious 18 $9,878,619 $9,878,619 $19,757,238
Residential 4,899 $2,318,350,788 $1,159,175,394 $3,477,526,182
500yr 5,850 $298749455,468 $19688,5429374 $4,562,9979842
Agriculture 0 $0 $0 $0
Commercial 664 $391,945,667 $391,945,667 $783,891,334
Education 7 $5,927,080 $5,927,080 $11,854,160
Government 49 $75,988,762 $75,988,762 $151,977,524
Industrial 30 $9,444,577 $14,166,865 $23,611,441
Religious 18 $9,878,619 $9,878,619 $19,757,238
Residential 5,082 $2,381,270,764 $1,190,635,382 $3,571,906,146
Source:FEMA,NOAA,Monroe County Parcels
Table F.14 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to storm surge based on 100 and 500-year storm surge events.
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Storm Surge Category Critical Facility Count Structure Value
100-Year 17 $74,871,755.56
500-Year 10 $58,301,325.70
Total 27 $133,173,081.26
Source:FEMA,NOAA,Monroe County LMS Working Group
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ANNEX F:ISLAMORADA VILLAGE OF ISLANDS
F.2.4 WILDFIRE
Table F.15 summarizes the acreage in the Islamorada Village of Islands that falls within the Functional
Wildland Urban Interface(WLTI), categorized into zones that describe the wildfire risk mitigation
activities appropriate for each zone. Areas in the Functional WUI are those areas where development and
building structures may intermix with burnable land cover. Approximately, 14 percent of Islamorada is
categorized as having direct exposure to wildfire risk within the Functional WiJI.
Table F.75-Functional Wildland Urban Interface,Islamorada Village of Islands
Rill I"Mill 11111 11 rli iii I i=11 11111 rlil miicll� 1114111111
Direct Exposure 586 14%
Indirect Exposure
Critical Fireshed 848 20%
Sources of Ember Load to Buildings 727 17%
Little to No Exposure 1,975 46%
Water 130 3%
Source:Southern Wildfire Risk Assessment
Figure F-10 depicts the WUI for Islamorada. Figure F-11 depicts Burn Probability based on landscape
conditions,percentile weather,historical ignition patterns,and historical prevention and suppression
efforts. Fire Intensity Scale,which indicates the potential severity of fire based on fuel loads,topography,
and other factors, is depicted in Figure F-12.
Much of Islamorada is within the Functional WUI with some small clusters of direct exposure present
along the outer edge. Where there is a rating for burn probability, scattered throughout the Village with
WUI areas, it is very low; otherwise, much of the city is without a burn probability rating. There are small
areas of higher characteristic fire intensity throughout the Village,but large swaths of the Village are not
rated on the characteristic fire intensity scale.
Table F.16 provides building counts and values for critical facilities by FEMA lifeline that are located in
areas categorized with direct exposure to wildfire risk on the Functional WUI scale.
Table F.16-Critical Facilities Exposed to Wildfire,Islamorada Village of Islands
Type Critical Facility Count Structure Value
Communications 0 $0
Energy 0 $0
Food,Hydration,Shelter 1 $9,028,418.00
Hazardous Materials 0 $0
Health and Medical 0 $0
Safety and Security 0 $0
Transportation 0 $0
Water Systems 1 $0
Total 2 $9,028,418.00
Source:Southern Wildfire Risk Assessment,Monroe County LMS Working Group
Monroe County,FL WSP
Multi-Jurisdictional Local Mitigation Strategy January 2026
Page 458
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Meeting Title Meeting Topic Meeting Date Meeting Location
1) Introduction to DMA and CRS
LMSWG Mtg. requirements and the planning process January 30,2025
#1-Project 2) Review of LMSWG responsibilities and the 2 p.m. Microsoft Teams
Kick-Off project schedule.
3) Discuss local capability
1) Review Draft Hazard Identification &Risk Monroe County
LMSWG Mtg. Assessment(HIRA) March 26,2025 Emergency
#2 2) Review and update plan goals and 10 a.m. Operations Center&
objectives Microsoft Teams
1) Report on status of actions from the 2020
LMSWG Mtg. June 5,2025
#3 plan 3 m Microsoft Teams
2) Draft Mitigation Action Strategies p
LMSWG Mtg. 1) Review the Draft Local Mitigation Strategy Ju ly 1,2025
Microsoft Teams
P
#4 2) Solicit comments and feedback 2 m
Note:All LMSWG Meetings were open to the public.
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
LMSWG MEETING
1TE,,'-; AND ATTENDANCE
.,
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Jan a ary 30,2025,,2pm,M^ roso t Tea mis
There were 23 attendees.The following individuals were,in attendance:
— Brian'Shies,,,Planning Director,City of Marathon
— Julia Cheon,Planning and Environmental Resources,Monroe County
— Carla Fry,Florida.Department of Health
— Brittani Harden,Keys Energy
— ,Tames Johnson,Marathon Fire Rescue
— Kelcee Degraffenreid,Florida Keys Aqueduct Authority
— Karla Garcia,Florida KeysAqueduct Authority
— Melian Bosey-Keys Health Ready Coalition
— Mike Lslbachan,Monroe County Land Authority
— Elizabeth Luustberg,Monroe County Planning Department
— Dan Sabina,Keys Energy
— Cory Schwisow,Monroe County Emergency Management
— Shellie Ca alliere,City of Laytorn
— 'Terry Abel,Islamerada.Fire Chief
— , aye Porter,Ivey West Floodplain Manager
— Tama Harding,Key Colony Beach
— Heather Carruthers—K2M Design Architecture and.Engineering
— Mimi Young,City of Layton
— David Stroud,WSP
— Abby Moore,,WSP
— Ranger Ruffins,WSP
— Kimmy Hansen,WSP
— Lauri.Lelir,,Lehr LC"°P
AG 7 INllDA
— Welcome&Introductions
— Why Plan?
— PrQ j ect Overview
— Planning Process
— Project Schedule
— Next Steps
— Discussion
W IH"Y ICE III II l"'?
David Stroud and Abby Moore with WSP facilitated the nneeting following the agenda above.David
began the presentation with why we Plan in the first Place.David discussed that the Disaster Mitigation
ation
Act(DMA)of 2000 which is codified i:n CCFR 201.6 requires local govemments,to update their hazard.
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
mitigation plans every five years,to receive FEMA pre-and post-disaster mitigation Rinding t1irougli the
Hazard Mitigation Assistance ftinding programs.David reviewed some trends in disasters including that
we now have more frequent and intense hazard events and greater exposure to risk(people,property and
critical infrastructure).In 2024 there were 27 billion-dollar disasters.Hazard mitigation is a priority for
multiple reasons,including that the cost of doing nothing is too high,many events are predictable and
repetitive,loss reduction can be effective,cast-hen eficial,and enviro nine ntall y-sound,there are legal and
moral responsibilities to prevent disasters,and there are federal funds,available to support mitigation.The
average benefit-cost ratio for federally-funded projects is 6:1.
�IID-Z E C"T" V IV W IF V II E��W!
David explained that we must follow the DMA planning process and this plan will integrate Conu-n-unity
Rating System(CRS)Activity 5 1 lanning steps into the DMA four-plias,e planning process to meet the
requirements of both programs.The DMA process provides continued eligibility for initigation.ffinding,
guides initigation activities,in a coordinated.and economical manner,integrates hazard mitigation with
other planning mechanisms,directs future development in a safe manner,and helps make communities
more disaster resistant.The CRS program provides,policy holders,in participating communities with
flood insurance discounts,based on the number of CRS p ints the communities earn.The flood insurance
preinium reductions,are corninunity-wide.
Cory asked if there is an opportunity for communities to improve their CRS rating through this process.
David explained that it depends on the number of points each community has.While every point helps the
communities,it may not be enough points,to put them over a new rating threshold.
WSP will ensure that theupdated local mitigation strategy meets all FEMA planning requirements,
coordinates with the natural hazards in the updated State Hazard Mitigation Plan,includes natural and
hunian-caused hazards as identified by the LMSWG,incorporates local climate change data and findings,
and addresses equitable outcomes.
[D[A II'NJ Il'NJ JD Q
Abby described the planning process in more detail.
Phase 11-Orgianize Resources
Phase 1 is already underway.The LMSWG was reconvened with some new members and will be asked to
attend four meetings,provide input on risk and capability,update mitigation actions,and review plan
drafts.LMS,WG members,especially staff,were,also asked to consider ways to involve the public
throughout the planning process.Another priority is to,identify stakeholders that should be invited to
participate in the planning process,especially those that may be able to represent u n.derserveld
communities and/or vulnerable populations.To maximize CRS credit and support awareness of the plan,
30 outside stakeholders,must be invited to participate and provide input.Lori and David noted the
importance of jurisdictional representation at the working group,meetings to,ensure maximum CRS
credit.
Phase 2-Asse�ss Risks
Phase 2 covers,the risk assess Yu.ent,'which includes,the hazard identification,the vulnerability assessment,
and the capability assessment.The hazards that were addressed in the previous plan were presented and
are as follows,:tropical cyclones,flood,severe storms,(thunderstorm wind,lightning,and hail),tornadoes
and waterspouts,sea.level rise and climate change,drought,wildfire,coastal erosion,extreme heal,
radiological incident.,and cyber attack.Cory also asked if terror attacks should be included in this,plan.
Abby explained that this may be better covered in an emergency operation plan,but that it could be
included if the working group wants to include it.David further explained that it's only best to include if
there is an associated mitigation action to include in the plan.Cory mentioned that they have received
funding for barriers,in the past.Abby noted that the count has until March to decide if they want to
include this in the plan.
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
Mike,noted that the County lias,consi I dered sea walls and asked if this is�something that can be included in
the mitigation strategy.Abby confin-ried that it could be included.
Phase 3,-Develop a M[figation Strategy
Phase 3 involves developing a mitigation strategy by reviewing and updating the plan goals and
objectives,evaluating mitigation alternatives,,including existing and new projects,and drafting an action
plan with prioritized projects.Abby reviewed different approaches to mitigation,the six FE,MA/CRS
mitigation categories,and the count of actions,by category for each jurisdiction in the existing LMS,.In
the plan update communities must have at least one action for each natural hazard to meet FEMA
requirements and should include a�flood-related action for at least 5 of the 6 mitigation categories to
maximize CRS credit,.
Heather asked if one initigation action could cover multiple hazards.Abby explained that this is possible
but noted that we want to try and address all hazards,especially high and medium risk hazards.Abby also
highlighted that actions are only required for natural hazards—FEMA does not evaluate actions for
human-cased hazards.
Abby also explained that all existing projects included in the previous plan will need a status,update.
WSP will send an excel spreadsheet to every jurisdiction to provide updates and comments on their
actions.
Phase 4-Adoption and I mplementMilon
Phase 4 is where the communities must adopt and implement the plan.The communities and LMS,WG
Neill meet quarterly to review the action plan and look for funding and opportunities to implement
projects.The plan will continue to be updated every five years.
S I E D U1 L.
(IIII
Abby presented a tentative schedule for the planning process,which includes additional LMSWG
meetings around April,May,and June.The draft plan is due to FDEM in July.The plan must be approved
by FDEM and FEMA and adopted by all communities before the current plan expires,in January 20, .
l`J III,'X'T'STEIPS
Abby discussed public outreach efforts,which includes public meetings facilitated by WSP,a public
survey,and a plan website.Community staff were asked to post outreach on local websites and social
media and consider ways to advertise the plan and the survey at community events.Tile plan website used
for the previous,plan update will be rebooted and shared once it is available.
WSP will work with the County to sched-Lite a public meeting.This meeting will probably be held
virtually.WSP will provide publicity language for the survey and public meeting.
WSP will be reaching out to jurisdiction representatives to,schedule Community Data Collection
Meetings,to discuss,local hazard information,local capabilities,and mitigation action updates.WSP will
reach out with date and time options over the next few weeks.Any community staff or stakeholders that
can provide useful inforniation are welcome to join the calls.
Abby asked the LMSWG to begin reviewing the existing actions and thinking about status updates.They
can also begin considering new mitigation actions.The L,MSWG was,also,asked to look for opportunities
to support,public engagement and to document any publicity and engagement efforts.
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March 26,2025,110a n,Monroe County Emergency Operations center&Microsoft Teams
There were three attendees,in person and 15 online.The following individuals were in attendance:
— Cory Schwis,ow,Monroe County Emergency Management
— Liz Lu tb'erg,1'Monroe County Plantuing Department
— Alison Higgins,Key West Resiliency Manager
— Alyssa Panzer,Islaniorada Sustainability and Resiliency Coordinator
— Andrew Engels e er,Islamorada Public Works Director
— Brian Shea,'City of Marathon thon Planning Director
— Julie Cheon,Monroe County Planning and.Environmental Resources
— Carta Fry,Florida Department of Health in Monroe County
— Ke1cee,Degr ffenreid,Florida Keys queduct Authority
— Kristen Li err e' d,Monroe County Pi
— Dan Sabino,Keys Energy
— "Tour Harding,Key Colony Beach Commissioner
— Heather Carruthers—K2M Design ign rchiteet r'e and Engineering
— Marla ` elli,Marathon
— Sherrie Schwab,FL Domestic Abuse Shelter
— David Stroud,WSP
— Abby Moore,WF
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— Wellcome&Intreduetion
— Pr jeet Overview&Where we are in the planning process
— Hazard.Identification
— Asset Inventory
— ]People,Property,and Critical Facilities
— Hazard.Profiles:Risk&Vulnerability
— Summary of all natural hazards
— Remaining Data Needs
— Public Survey Update
— Next Steps
Cory Schwisow began the meeting with opening remarks thanking attendees for participating.He
acknowledged that recent weeks have been busy and disruptive in Monroe County due to nearby wildfires
and response activities.He asked that attendees provide as much feedback and infe►rnlation as possible t
WP to support the plan update.
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David Stroud.and Ranger Rufflins,with WSP facilitated the meeting following the agenda above.David
e ,plained that the planning process,is set by the Disaster Mitigation Act(DMA)of 2000 which is codified
in 44 CFR 201.6.WSP integrates the Community Rating System(CRS)Activity 5 10 planning steps into
the DMA four-phase planning process to meet the requirements of both programs.There are four phases
in the planning process:organize resources,assess risks,develop a mitigation strategy,and adopt&
implement.We are currently working in phase two,which encompasses the hazard identification and risk
assessment(HIRA).
There are four main steps,in the IRA:identify hazards,profile hazard events,inventory assets,and
estimate losses.Risk is a combination of a hazard,vulnerability,,and exposure.Each of these factors is
evaluated in the,risk assessment process.
To update the hazard identification,WS,P reviewed the hazards in the 2023,State Hazard Mitigation Plan
and the hazards in the 2021 Monroe County LMS.All existing hazards in the Monroe County LMS were
carried forward for re-evaluation.Cory asked if all State:hazards niust be included,and David clarified
that hazards in the State plan that aren't relevant to the planning area are not included in the LMS.For
example,winter storn,s and earthquakes are not evaluated in the LMS.
Looking at FEMA Major Disaster Declarations,,there have been 27 disaster declarations that included
Monroe County.Most of these events have been hurricanes and tropical storins.Heather Carruthers asked
if this plan includes the mainland portion of Monroe County,as this may explain why the County has
received declarations for freezes and fire.David confirmed that it does include the full extent,of Monroe
County,
David reviewed data,from NCEI Storin Events database,which is,compiled at a,county level and reports
hazard events,by type along,with.any reported property damages,crop damages,deaths,injuries,and
narrative descriptions,of the event.Reviewing past events from this database provides at least a basic
understanding,of the types of events and impacts that can occur in the county.
David concluded by listing the hazlards,that were identified for,inclusion in the plan update:
Flood Padidlogical Incidents
Tropical Cyclones Cyber,Attack
SQ,vere Storms&Tornadoes
WRdfi're
Coastal Erosion
Drought
Elxtr"enle Heat
I a Levei rise
Heather Carruthers asked about the omission of earthquake from the hazard list and whether the hazard
identification is only retrospective or if we also look forward at what can happen in the ftifure.She noted,
having felt are earthquake in Monroe County.David clarified that we are looking at retrospective data as
well as,future trends and projections.Ranger added that each hazard profiled will include a hazard
specific discussion of impacts of climate change.
Cory asked about the inclusion of transportation disruption and provided examples of how the Keys,have
experienced disruptions and econoinic losses as,a result of road and bridge closures.WSP will evaluate
this,further.
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A,SS E�1'�I IIIµJ ,J TO PY
David presented summary tables of the asset inventory.According to Census,data,the 2020,Monroe
County population was 82,874,which is a 13.4%increase since 2010.Based on county parcel and
assessor data and Microso,ft building footprint data,there are an estimated 42,625 buildings in the county
with a structure,value of over$18 billion.
There are 430 identified critical facilities countywide,which have been sununarizied by FENIA.lifeline
category.Critical facilities were identified using data from the existing L,MS,updates m community
staff collected at the community data meetings,and certain energy,water,wastewater,and government
facilities from the communities'Vulnerability Assessments.AJEngetmeyer asked if water systems,
include wastewater facilities.Ranger confirmed that it does include wastewater facilities,and the full
inventory will be provided so the LMSWG can confirin and add to the inventory if needed.
H A,Z A III IID III I IE-S,
David presented the Priority Risk Index(PRI),methodology which is used to rate each hazard on a set of
standard criteria.This provides an overall risk rating to summarize and rank the risk of each hazard.The
preliminary PRI ratings are,shown below:
Hazard III`Probab" t Wa I TIm e Spatial ming i Durat'j"on �PRI
y Impact
M D T Co
Scow Extent re
Less than 11 week laistiW ErosJon Likely L j rn,i t ed Sr"niall More than,24 hr's
or rought Likely Minor Large More than 24 hrs More thain I week
Extreme Heat Likely Lir-nited Large More than 24 hrs Less than 11 week
Flood Highly I ikely Criticall 11 argie 6 to 12,hours I ess than I week,
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Sea Level Rise HigNly Likely Critical Large
11 More than 24 hrs More than I week
Severe Storms& d jjg y I ely ILI
1 HJgNy Likely Lirnited Moderate Less than 6 hrs Less than 6 hrs
Tornadoles
Li v L I mit
Wildfire Likely Limited Small Less than 6,hirs, Less than 1 week,
R'a dogical inch lent! Unlikely Critical Moderate Less than 6firs f ore t h a,in,I wee,k
Cyber Attack Possible, Minor Small Less than 6,hr's More than 1 week
Note:Tropical cyclones,were missing from this list but are rated as a high risk hazard.
Cory asked if coastal erosion is based on long-term erosion or impacts from specific storm events,.He
noted that erosion is particularly a concern.in Key West around Higgs each and Martello.Alison
Higgins agreed that the coastal erosion rating seems low;the individual criteria fit but the hazard,should
be rated higher overall.Erosion has also been a major issue in Islarnorada,particularly when storni surge
washed across the island in the Matecumbe area.Dan Sabino,asked whether the erosion that occurs,with
severe stole s is covered under that hazard.
David and Ranger presented summary infolmiation on each of the identified natural hazards.See slides
21-34 for more detail.
Flood— Per the effective FIRM data,nearly 72%of the county is in Zone AE and over 22%,is in Zone VE;
this is skewed by the large mainland portion of Monroe County and surrounding water area that is
included in these acreages.Acreages will be provided by community in the plan which should
provide a better picture of flood zone acreage where people live.
— There are 3 5 244 buildings located in Zone AE and 2,716 in Zone VE.This is,Just exposure by flood
zone.WSP is working on developing loss,estimates,using FEMA's Hazus software.WSP will also
evaluate flood exposure and loss estimates using the preliminary FIRM.
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
Tropical Cyclones
— There are 29 named hurricanes and tropical storms recorded.in NCEI from 20 -2024.These stornis
caused$66.3 million in property damage and$149.9 million in crop damage,which likely includes
damages to all inipacted areas,not Just Monroe County.These events,also calased 5 deaths and 2 5
injuries in Monroe County.
— NCEI includes 15 records of sConn surge events,which caused$,2 million in property damage, 1
death,and I it1jury.
— Storin surge exposure was evaluated using data from the Vulnerability Assessments four the 100-year
event and the 500-yea,r event.
Severe Storms&Tornadoes
— There are 32 tornadoes reported in NCE,I from 2000-2024,which caused$5.3 million in property
damages.
— NCEI reports,12 damaging lightning strikes,causing$73k in property damage and 4 injuries,7 hail
incidents,with hail tip to 1.75"in diameter,and 53 thunderstorm wind records causing$147k in
damages.These events,are likely underreported but illustrate the type of damage that can and has
occurred.
Wildfire
— WUI is,where structures meet undeveloped wildland or vegetative ftiels.An estimated 15%of the
county' opulation lives within the critical fire shed,where fire can reach a significant number of
buildings within a single burning period.About 1%,of the population lives,in areas of direct exposure,
which is where burnable landcover is within 75m.of buildings.
— From 2000-2024,FDACS reports 167 fires which burned 186 acres.
— Bum probability is moderate to,high in over half of the county,but this is primarily in the mainland.
%of the county is not included in bum probability estimates.
— Current wildfire is in the Mianii-Dade side of Everglades.Monroe County's focus has been on fire
watches,in Big Pine area.
— In 20,17,after Irina there were issues with fires in Big Pine.
Coastal Erosion
— State Critically Eroded Beaches Report indicates 15.02 miles of Florida Key'36.3 miles of beaches
are critically eroded.This includes erosion from stornis,wave action,sea level rise,human activity.
— Dan Sabino noted there are areas where land around transmission poles eroded.Florida Keys Electric
Coop also has,this issue and has moved poles with HMGP,funding.
— Tom Harding indicated that a significant amount of work has been done at Sea Oats,Beach.Ranger
acknowledged that ongoing work will be addressed in the hazard profile.
Drought
From 2000-2024 Monroe County was in drought 42%of the time,mostly in abnormally dry
conditions.There is about a 10%chance of drought in any given week based on past occurrences.
Extreme Heat
— In 20,23,more people in the US died from Beat-related illness than arly year on record.Certain
populations have higher vulnerability.Climate change is,expected to make extreme,heat worse across
the southeast.
— Highest temperature on record for Key West is 96 OF,which occurred,in July and Aug�List 2024.
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Sea Level Rise
— Current trend is 2.64 ilun/year.Scenmios for the Key West tidal gage show up to 5+feet of sea level
rise by 2 100 under the inten-nediate-high scenario or 2+feet under the internied iate-low scenario.
— At the 2040 time horizon,there is,little difference between the interniediale-low and intermediate-
high scenarios.
— Sea level rise exposure was evaluated using data froni the Vulnerability Assessments.These exposure
estimates do not account for building elevation,,except where elevation certificate data was available.
— Cory noted that John Rizzo has very detailed report,on sea level rise inn act on specific keys.
Ranger indicated that we need to hold community data collection meetings,with Mo�nroe County and
Marathon.Representatives froin these cominunities are asked to let WSP know availability for a meeting.
We need to provide a count of repetitive loss,properties by Jurisdiction and indicate tile number that are
residential vs.conmiercial.We would also like to incorporate mapping of repetitive loss,areas into the
flood hazard profile.WSP can use FE.MA open data for repetitive loss property counts or communities
can provide this summarized data if they already have it.WSP cannot handle,raw repetitive loss data froin
FEMA unless we are in with third-party access oil your data sharing agreement.WSP will provide
request forms to each eon inunity which you can submit to.FEMA if you wish to request updated data to
share with us.
F)(J Ih IIL .°S LJ P VEY'tJ P D A]!-E
Ranger provided an update on the public survey,which has received 120,responses so far.Most
respondents have been impacted by past disasters,and many mentioned Hurricane Irma.Flood,tropical
cyclone,severe storms,and sea level rise were noted lias the highest risk hazards per public input.
N 1�
Ranger presented the schedule for the planning process,which iticludes additional LMSWG ineetings in
May andJune.Tile draft plan is due to FDEM in July.The plan inust be approved by FDEM and FEMA
and adopted by all communities before the current plan expires,in January 2026.
Ranger shared the following action iteiiis for WSP and the L,MSWG:
WSP will:
- Share the draft risk assessment for LMSNVG,,review
- Schedule community meetings with Monroe County and Marathon
- Provide ISAA request form templates for repetitive loss,data requests
Schedule the next LMSWG meeting for May
LMSWG members,were asked to:
- Provide summarized repetitive loss data,repetitive loss,area shapefiles,or submit ISAA requests
to FEMA
- Review the draft risk assessment
- Provide a status report on existing mitigation measures if you haven't already done so
- Support public engagement by proi noting,the public survey and the plan website.The QR code
for the public survey is provided below.The plan website,link is www.MonroK1'ountyFL-
LMS.coni.
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In addition to the cons,ulting tam there were 22 attendees who attlendied virtually through Microsoft
T ani .The following individuals were in attendance:
— Cory Schwisow,Monroe County Emergency Management
ement
— Liz Lu tberg,Monroe '+ nt P'lanning Department.
— Emily Scheniper,B4OCC Planning and.Environmental Services
— Alison Higgins,Key West Resiliency Manager
— Alyssa]panzer,Il lani rada Sus,tainability and.Resiliency Co rdinator
— Christie Martin,Florida Days Aqueduct Authority
— Megan Bosi,Keys Ready Healthcare Coalition
— Mike Lalba lian,Monroe t C
— Lori Lehr",BOCC Community Rating System
— Mimi'young;,Layton City Clary
— Shellie Cavalliere",Layton'Cody"Enforcement
— Robert 1' ather,Engineer in the lanning department
— Tony Hammon,Building official in Key Colony Beach
— Kevin Wilson,BOCC Assistant County Administrator
— Carla Fry,Florida Department of Health in Monroe Count
— Kelcee D graff nr id Florida Keys Aqueduct Authority
— Lauren Wells,Florida Keys,Aqueduct Authority
— Terry Abel,1,I lam rada Fire,Chief
— Dare Sabino,Keys Energy
— Torn]Harding,Ivey Colony Beach Commissioner
— Heather Carruthers—K2M Design n Architecture,and Engineering;
— Sha na Martin,Ovid Solutions,Stakeholder
— Kimmy Hansen,WSP
Ranger Ruffin ,WSJ'
— Abby Moore,,WSP
PrQject Overview&Where we are in the planning proicess
Capability Assessment
„1 New Capabilities
non Substantial Damage anagement Procedures
Mitigation Strategy
,1 Review Coals and Objectives
non Mitigation Action Updates
FEMA&CRS Action Requirements
. Action Prioritization
4. Discussion
Next Steps
Cory Schwisow began the meeting with opening remarks thanking attendees for their participation and
feedback throughout the plan update.Abby Moore,r and Ranger Ruffin with.WSP facilitated the meeting
following the agenda above.
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Abby Moore kicked off the meeting with a.review of the four phases of FEMA disaster mitigation
planning process and the 10 steps of the CRS planning process.We are currently working through Phase
Litigation'Strategy,which aligns with Step 6(Set Goals),�Step (Review Possible Activities),and.
Step 8(Draft rr Action n Plan)of the CRS planning process.Abby reminded the committee that there will
be one more,committee meeting and one more public meeting where WSP will present the draft plain.
fterwand ,the plain will be writ to FDEM for review.
CA IIPA II III III.III Y A°S IE S IM E IN F
capability assessment measures local resources,are.d tools available to upp rat or implement mitigation
projects.It identifies gaps,conflicts, rnd opportunities in existing local plains,policies,and programs.
Additionally,a capability assessment identifies mitigation measures already in place or underway.
Indicators,of capability in this plan-update include the following:
— Planning&Regulator —plans,programs,ordinances
— Administrative&Technical staff,training,expertise
— Fiscal Resources—bonds,fees,taxes,CIS,grants
— Education and Resources—engaged stakeholders,public outreach,warning¬ification
— Mitigation Resources—grants,past mitigation projects performance
— Political Willpublic and leadership support for mitigation,investments,,regulation enforcement
Charges Sirs 'the Lit Plain Update
Abby reviewed the changes in capability that have occurred since the last plan update,Capability update
were captLired during the individual community meetings,with WSP,with tine exception of Marathon and
Monroe County.
Abby ug,ge ted communities,think about the following changes are.d updates,over the past five years
when updating;their capability results.
— Additional finding
— New r updated plains
— New staff
— Updated flood or open space regulations
— New emergency warning systems or strategies
— Completed mitigation projects
Cory mentioned that open space management plans are difficult for all jurisdictions to,complete and
asked)if this would reflect negatively on the municipalities.Abby said that it doesn't,and they can
remove whatever isn't relevant to the comniu n.ities,The committee will discuss this topic further and
report their decision to,WSP
INew FEMA Requirements
Abby briefly noted that there is a new FEMA requirement for substantial damage estimate procedures.
The plan must include information on)now participating communities nities use the NFIP to reduce risk after a
disaster through substantial damage and substantial improvement SI /Sl procedures.Abby noted that
WSP has net yet received all the information on the community's unit 's post event procedures.These
procedures don't have to be reported in detail,but the plan must document that these post event
procedures exist within the community.
Cap4billty Vs.Mitigation
Abby emphasized the difference between capability and mitigation actions and gave examples of different
scenarios found on slide 12.Mitigation actions should be applicable to the next five years and should be
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specific actions that help achieve the plans;goals and objectives.It is important to focus on projects that.
reduce risk and vulnerability.Abby noted that status updates need to,be reported for each individual
action and to rinse actions that sped to the regular duties of departments.
The committee asked if it was possible to add mitigation actions n post plan approval.Abby responded that
it is possible but will require a plan amendment which can be a lengthy process,and it is,much easier t
turn in the mitigation actions new.Additionally,Abby noted that mitigation actions with pending or
u n.known ftunding;sources should still be included in the plan,.
mitigation strategy is meant to,reduce the impact of hazards on existing,development and ensure future,
development occurs in a way that minimizes vulnerability.
,Goals&Objectives
Ranger reviewed the existing goals and objectives from the previous,plan update and discussed potential
revisions to implement with the conu.-nittee for the current plan update.These revisions can be found on
slides 17 and 18 of the presentation,No fuurther comments or revisions were recommended by the FIMPC.
IMlitii ation Action IRequirements
Ranger informed the conuiiittee that FEMA requires at least one mitigation n action for each identified.
hazard in the plan update.All mitigation actions will need to be organized into the categories found
below.Abby noted that to maximize CRS credit they should include flood-related actions in at least five
of the six mitigation categories.
l, Prevention Gland development plans&zoning,freeboard requirements,)
a. Property Protection(acquisition,elevation,flodprefin ,backup generators)
Structural Projects(flood all,storniwater improvements,harden critical infrastructure)
Emergency Services N aming systems,response capacity&capability improvements)
Natural Resource Protection(dune or wetland restoration,'vegetative management,oplen space
preservation)
. Public Education mailings,websites,social media campaigns,interactive neap tools,hazard.
disclosure requirements,targetedoutreach and engagement)
Cuirr irrt Action Plans
Ranger reviewed a summary of the current action plans in ternis of what mitigation categories they cover
and what hazards they address—slides 20,and 21.The current action plan has 37 in-ulti-jurisdictional
actions,and some actions fall within multiple mitigation categories.WSP will provide a fell list of the
mitigation strategies for communities to review and provide status updates.
IPRI Summary Results
Flood
Ranger briefly reviewed the PRI suilnniary results u'u'u'u'u'u'u'u'u'u'u'u'u'u'u'u Sea Level Pise
with the coraiiiittee which can be found on slide 22. Trs.lpi al Cyra_I1l orter,
C"lo tai Erosj rl
Flood,sea level rise,and tropical cyclones were the
only luazard profiles to be rated a"High Risk""for Extiren,"o Heat,
seve i�e sto rr'nsN al Pod�oltar,„lloes
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hident
it is important to,consider addingmore mitigation � � Rad m� �call Attackk
actions for the high priority hazards, "
II ew Mitigation A talon IIdeas
Ranger discussed potential new mitigation action ideas that could be added into the plan update.She
reminded the committee that these are only ideas to help them think of new actions and have not been.
added to the plan update.The action ideas presented can be found on slides 24-26l.Loiri Lela-noted to the
committee that many corninunities are currently developing a watershed management plan with outside
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Rinding sources.Many of the projects occurring in the watershed management plan could be included as
new mitigation actions in the LMS plan update and it will be beneficial to have cohesion between the two
plans during updates in the future.
Survey Resu Its
Ranger reviewed results of the public survey which received a total of 126 responses.Abby Neill send a
copy of the survey responses,which can be sorted by jurisdiction to help give specific feedback to the
different communities regarding proposed mitigation action ideas.
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Ranger presented the schedule for the planning process,which includes final LMSWG and public
meetings in the end of June or early July.The draft plan is due to FILM in July.The plan must be
approved by FDE,M and adopted by all conun-unities before,the current plan expires in January 2026.
Ranger shared the following action items for WSP and the LMSWG.,,
WSP will:
- Share the draft plan for committee and public review
- Schedule final LMSWG meeting&public meetings
LMSWG members were asked to.,,
Send mitigation action status updates and new mitigation actions to,Ranger
(ratigenniffins L�i.'�NysL)xoqi)
Provide feedback on draft capability assessment
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
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In addition to the consulting tarsi there were 24 attendees ho attended virtually through Microsoft
Teams.The following individuals were in attendance:
— Cory Schwisow,Monroe r o t Emergency Management
— Liz Lu tberg,Monroe County Planning Department
— Alison]Higgins,Key West Resiliency Mana r
— Alyssa]panzer,I lane rada Sus,tainability and Resiliency Co r inat r
— Berea Lindenberg,College of the Florida Keys,Director,Institutional Effectiveness
— Brian Shea,, ""it f Marathon Planning Director
r
— Christie Martin,Florida a Days Aqueduct Authority
— Mimi'young;,,Layton City Clary
— Shellie Cavalliere",Layton Code Enforcement
— Mike Lalba han",Monroe County Mitigation Administrator
— Robert Mather,I lain ra a Engineer
— Kelcee D graff nr i t Florida Keys Aqueduct Authority
— Lauren Well,Florida Keys,Aqueduct Authority
Kristen Livengood,Monroe County PIED
— Maria Covelli,City of Marathon Grants Coordinator
— Matt William",Key West Utilities Director
r
— Megan Ruinbaugh,I lam raga Senior Fl plair/CR Coordinator
— Dare Sabino,Keys Energy
— Torn]Harding,Ivey Colony B,each Commissioner
— Zoe Porter",Ivey West Development Review Manager
— Sha na Martin,Ovid Solutions,Stakeholder
— 1 eghan Boni,Keys Health Ready Coalition
— Abby Moore,,WSP
t. PrQject Overview&Where are in the planning process
Draft Plan Leis
�1 Structure of the Plan
Review f Ivey Plan Components
,1 Planning Process
non Rik Ass,ess,nient
, Mitigation Strat gy
4. Plan Adoption&Iniplementation
Next Steps
6 Discussion/Feedback n Draft Plan
Cory Sch isow began the meeting with opening remarks thanking attendees f+r their participation and
feedback throughout the plan update.Abby Moore,and Ranger Ruffin with.W P facilitated the meeting
following the agenda above.
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Abby Moore with W E began the presentation by explaining where we are in the planning process.W
are nearing the end of the planning process as we have drafted the plan and now need to finalize it with
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
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any new or updated mitigation actions that the conuilurlities include.The plen will then need to be
adopted and the LMSWG andconnun ninitie Neill work-on inipleuuuent Lion for the next five years,
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Abby provided ail overview of the structure of the draft plan including g uunn.ma of each section of the
plan,as,follows.
- Section 1:introduction provides background irnforrnn tiorn on the plain,including context and
justification for planning and the scope of the plain.
- Section :Planning Process, unnnmarize' flow the planning process was conducted and know all
planning requirements were met,including how the coiuu.muunitie ,public,and stakeholders pl eloper were
involved in the plain.This section also documents implementation progress of the last plan in
terms of completed and deleted mitigation actions,.
- Section :Planning Area Profile for summary irnfornnnat on on the region and partic,ipatirng
connunuuu nit es,including geographic,climate,demographic,and economic characteristics of the
region.
- Section 4:Hazard Identificationand Risk .s essrurent contains the bulk lk of the plan.This
section presets the hazard identification and profiles each hazard with irnforinationn on the
location at risk,past occurrences,probability of future occurrence,any.d vuulnnera ilia of people,
property,and critical facilities.
Section :Capability As,ses,snient summarizes each community's existing tools,staff,and other
resources that can support the implementation ofmitigation projects.
- Section :INBti at on Strategy reviews the goals and oL jecti es of the plain and details how
mitigation actions,were identified,and prioritized.Abby explained that existing mitigation actions
from the previous,plan were reviewed,and project status updates are reported in the plan.Some
prQjects.were carried forward..
Section 7:INBti at on Action Plan presents the action plan tables for each community.
.
- Section :Plan ikla ntenance describes past plan integration,opportunities for fuutuure plan
integration,and the process for regular monitoring,maintenance,and implementation of the plan,
including ongoing responsibilities of the LMSW .
- Section :Plan Adoption will document each community's adoption of the plain update.
- Annexes are provided for each participating coinn iuunity.The annexes,provide an asset inventory
with a full critical facility list,,risk assessment data with vuulrnerability assessment results specific
to the community for spatially defined hazards,and the mitigation action plan.
Appendix fir.provides the Plain Review"fool,which documents for the plan reviewers where the
planning requirements were met.
- Appendix 1 provides planning process documentation dennnonstrating how the LMSWG,.public,
and stakeholders were involved and engaged in the planning process,.
- Appendix C provides mitigation alternatives analysis,documenting the review of mitigation
action options,which is important for the CRS program planning requirements.
- Appendix D describes the ounnty's nnnethod for HMA project prioritization.
- Appendix E lists data and resources that were,referenced in the plan.
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Planning Process
Abby reviewed key parts of this planning process,including this L SWG meetings,this public meetings,
and all this participating communities,'public outreach.efforts.She noted that Hoare,is one more
opportunity to get the public involved in the planning process with the review of this draft play..The plan
has been posted on this plan website.Conuilunities,can share this lire and encourage folks to,read and
comment on the plan.
Abby reviewed some high-level survey results, aloha were previously presented to the L1' SWG.There
Nvere 126 responses overall.Regarding past ha,zardl experiences,many responses reference past hurricanes,
and flooding;.Regarding recommended ende steps local govertinients,could take to reduce hazard impacts,
responses include suggestions for drainage improvements and regulations and guidelines for reduced risk
f future,dev l pm nt.
Abby presented the]priority Risk index results,as,a summaryof tine risk and vulnerability assessment.She
explained that this PRI is a methodology for compa,ring the hazards based on five categories:probability,
verity,spatial extent,warning time,and duration.Flood,Sea Leal Rise,and'T"ropi al Cyclone were
rated a "High Risk"for this County.This remaining hazards were rated has"Moderate"'risk*
Goals Objectives
Abby reviewed the updated,goals and objectives,discussed at the previous,meeting.WSP has not received
any additional comments since this last meeting,so Abbyasked for any additional feedback. f urth r
comments,or revisio�ns were recommended by the L]SWG.The plan,goals and objectives are as follows:
Goal :Protect and maintain the life,health,safety,and welfare of this community..
• Objective 1.1:Provide public education and outreach to inform residents and visitors,how to
protect theniselves,and their property.
• Objective 1.2:Improve preparedness,response,and recovery capabilities to minimize hazard
impacts.
• Objective 1. :Reduce losses from business interruption and support long term business viability.
Goal :Protect and pu°p s,ei°-e ppropeFty and assets,incInding the built nvii- pnm nt and natural
1'esouuu° .
• Objective .1:Retrofit or othenvise protect conunu pity infrastructure systems,including critical
facilities,utilities,water,sewer",communications,and transportation.
• Objective .2:Use planning and regulatory tools to protest future development and prevent
hazard risks from worsening.,
• Objective 2.3:Preserve and protect natural areas and resources,that provide hazard risk reduction
and other beneficial fiun Lion ,
• Objective .4:Pursue property protection and structural projects to reduce vulnerability of
existing
Goal :Build local capacity to enhance a°esili ncy and enable communities to quickly recover fi-oin
hazard impacts.
• Objective .1:Explore,develop,and implement new pre--disaster opportunities that build
conimuunity resilience.
• Objective .2:Ensure continuity and redundancy f critical local government pp r ti n and.
ytrrlr .
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
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0 Objective . :Strengthen regional connections and continue to foster inter-jurisdictional
coordination for risk reduction efforts.
IMitigation Strategy
Abby reviewed a sample of the mitigation action plan to explain the organization of the table and the
information included for each project,such as the lead agency,timeline for implementation,and potential
fending sources.
Abby asked the connittee to submit final mitigation actions to Ranger by Friday,July 11"'.This,include
mitigation action updates and new mitigation actions.She reinined the conlinittee to include any actions
that communities may want to pursue for grant handing in the nest five years.In order to receive federal
funding projects need to be included in this mitigation action plan.
Mike,asked ed if the mitigation action plan should include a.project for residential elevation in order to be
eligible for the State ffinding program,Cory noted that everything for the residential elevation program
will go directly to the State.Abby noted that we will review State guidelines to ensure the County does
not need to include a related action.Langer noted that a general elevation and acquisition project remains
in the action plan to ensure each projects are accounted for if funding streams were to charge over time.
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Abby explained that every cony nity will need to adopt the plan.Template language for the adoption
resolution from will be provided.Once FDEM approves the plan,communities can adopt the plan.
Moving,forward,the LMSWG should meet quarterly to report on progress toward implementation and
monitor funding opportunities and implementation of mitigation actions.The plan will continue to be
updated every five years.
III�XT S'T V IIV
The L SWG should send any final mitigation actions updates or new actions to Langer
rai ger.it,iffiils �WS,P.;o,ii by Friday,July 111h,WSP will submit the draft plan to FDEM for review and.
approval on July 1 'r1`
final publics meeting is scheduled for tonight,at Spin.Please send any screenshots of meeting publicity
to WSP so,documentation can be added into the plan.
The L" SWG was asked to review the draft plan which is available on the plan website
l tt s '/w° N r,ilo roecotit t fl-lms. ofil/.Any draft plan comments should be sent by Friday,.duly 1.1"'
Comments will be incorporated into the final approved version of the plan,
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
Per Florida Administrative Code Chapter 27P-22,annual meetings of the LMS working group are required. To
maximize CRS credit and support plan maintenance and implementation,the Monroe County LMSWG meets
quarterly.The table below summarizes the LMSWG meetings that have been held since the approval of the 2020
Local Mitigation Strategy in January 2021 until the start of this plan update in January 2025.Meetings have been
held virtually via Zoom or at the Monroe County Government Center.Additional documentation of these meetings
is maintained by Monroe County Emergency Management.
Date&Time Topics Covered
Elevate Florida, HMGP Update, Non-Disaster Grants Update,Watershed Planning
12/18/2024,1 pm Program, LMS Update-Guest Speaker WSP, Upcoming Training, New Projects
6/28/2024,1 p m Mitigation Bureau Updates, HMGP/FMA/PDM Update,Training Opportunities
National Weather Service, HMGP Update, Hurricane Idalia, New Projects-FKAA,
3/28/2024,llam Training Opportunities
9/20/2023,llam Hurricane Nicole HMGP, HMA BRIC/FMA, New Projects
8/9/2023,llam Hurricane Ian HMGP, project prioritization
4/28/2023,llam Hurricane Ian HMGP, project prioritization
National Weather Service, HMA programs, Hurricane Ian HMGP, My Safe Florida
3/28/2023,llam Home program,training
12/6/2021,llam NWS 2021 hurricane summary, project prioritization for Covid HMGP
Irma HMGP update,Covid HMGP, FDEM BRIC/FMA update,update on new LMS
10/20/2021,loam Board in WebEOC, NWS forecast
9/17/2021,3pm Hurricane Irma HMGP; NWS:tropical storm forecast
9/14/2021,3pm Hurricane Irma HMGP
Hurricane Irma update, BRIC/FMA update, LMS Board in WebEOC, NWS:Tropical
7/15/2021,loam Storm Elsa, Domestic Abuse Shelter mitigation initiative
LMS update approval, Key Colony Beach: mitigation initiatives to add, HMGP Irma
update, BRIC/FMA update,CDBG Irma update, Lori Lehr:CRS info, NWS: hurricane
3/23/2021,loam forecast products and information
Note:Documentation of LMSWG meetings held in 2022 was not available for this plan update.
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Meeting Meeting
Meeting Topic Meeting Date Title Location
1) Introduction to DMA,CRS,and FMA
Public requirements and the planning process March 13,2025
Microsoft Teams
Meeting#1 2) Review of HMPC responsibilities and the 5 P.M.
project schedule.
Pu bl is 1) Review Draft Local Mitigation Strategy Ju ly 1,2025
Microsoft Teams
Meeting#2 2) Solicit comments and feedback 5 P.M.
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PUBLIC
MEETING MINUTES, ATTENDANCE, AND ANNOUNCEMENTS
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There were eight attendees.The following individuals were in attendance:
— Iris Tebbets
— Tom Harding;
— Diane Smith
— Steve Russ
— Cory Sc,hwisow
— David Stroud,W' P
— Abby Poore,WP
— Ranger Ruffins,WSJ'
A(5II''llIJ11DA
— Welcome&Introductions
— Why Plan?
— P"r j ect Overview
— Planning Process
— Project Schedule
— Next Steps
— Discussion
114d°
David Stroud and Abby Moore with W P facilitated the meeting following the agenda above.David
began the presentation with why we plan in the first place.David discussed that the Disaster Mitigation
Act(DMA)of 2000 which is codified in 44 CFR 201.6 requires local governments to update their hazard.
mitigation plans every five years to receive FEMA Pre-and post-disaster mitigation Ri ndin.g through the
Hazard Mitigation Assistance funding programs.David reviewed some trends in disasters including that
we now have more frequent and intense hazard events and greater exposure to risk(people,property and
critical infrastructure).In 2024 there were 27 billion-dollar disasters.Hazard mitigation is a priority for
multiple reasons,,including that the cost of doing nothing is too high,many events are predictable and
repetitive,less reduction can be effective,cost-beneficial,and en ire mmientall -ound,there are legal and
moral responsibilities to prevent disasters,and there are federal funds available to support mitigation.The
average benefit-cost ratio for federally-Rinded projects is :1.
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David explained that we must follow tihe DMA planning process and this plan.will Integrate "onu i-Linity
Rating System(CRS)Activity 5 10 p,lanning steps into the DMA four-phase planning process to meet:the
requirements of both programs.The DMA process provides continued eligibility for mitigation frwunding,
guides snitigationn activities in a coordinated and economical manner,integrates hazard mitigation. with
other planning mechanisms,directs future development in a safe manner,and helps make communities
more disaster resistant.The CRS program provides policy holders in part
icipating communities with
flood,insuurance discounts,based on the number of CRS points the connnnuunities earn.The flood insurance
premium reductions,are coiuirnnnuunity-wide.
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
WSP will ensure that the updated local initigation strategy meets all FEMA planning requirements,
coordinates with the natural hazards in the updated State Hazard Mitigation Plan,includes natural and
huinan-caused hazards as identified by the LMSWG,incorporates local climate change data and findings,
and addresses equitable outcomes.
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Abby described the planning process in more detail.
Phase 11-Organize Reslources,
Phase I is already underway.The LMSWG was reconvened with soine new members and will be asked to
attend meetings,provide input on risk and capability,update mitigation actions,and review plan drafts.
The planning team will also,identify stakeholders that should be invited to participate in the planning
process,especially those that may be able to,represent underserved comin-unitiles and/or vulnerable
populations..Abby asked attendees to suggest any grollips,people,or stakeholders,that should be included.
Phase 2-Asse�ss R'I'sks
Phase 2 covers,the risk assessment,which includes,the hazard identification,the vulnerability assessment.,
and the capability assessment.The hazards that were addressed in the previous plan were presented and
are as follows:tropical cyclones,flood,severe storins,(thunderstorm wind,lightning,and hail),tornadoes
and waterspouts,sea.level rise and climate change,drought,wildfire,coastal erosion,extreme heal,
radiological incident,,and caber attack.
Phase 3,-Dievelop a M[figation Strategy
Phase 3 involves developing a.mitigation strategy by reviewing and updating the plan goals and
objectives,evaluating mitigation alternatives,,including existing and new projects,and drafting an action
plan with prioritized projects.Abby reviewed different approaches to mitigation,the six FE,MA/CRS
mitigation categories:property protection,stnictural projects,emergency services,natural resource
protection,and public education.In the plan update communities must have at least one action for each
natural hazard to meet FEMA requirements and should include a flood-related action for at least 5 of the 6
mitigation categories to maximize CRS credit.
Phase 4-Adapflion and I rnplementaltion
Phase 4 is where the conununities must adopt and implement the plan.The communities and LMS,WG
will meet quarterly to,review the action plan and look for Rinding and opportunities to implement
projects.The plan will continue to be updated every five years,.
� �IHEDUU�E"IID Q E-C"T S(I'�I Abby presented a tentative schedule for the planning process,which includes additional LMSWG
meetings around April,May,and June.The draft plan is due to FDEM in Judy,The plan must be approved
by FDEM and FEMA and adopted by all communities,before the current plan expires,in January 20, .
I1111J VF SIT IIV 11P S
Abby discussed public outreach efforts which include public meetings facilitated by WSP,a public
survey,and a plan web site.The plan web site will host the survey,meeting materials,and draft plans,for
review when made available.
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MONROE COUNTY Monroe CountV iS L11)(ILAtifIg the Loca.l Mitigation Strate P),to reduc:e
the risk,of loss from a.hurricane,flooding or other(fisaster.,
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Tot ,udk off'the planning proceSS"r avirtuall ptiblic meeting Will be held,on,Thuill-scilay, Mardi� 13 al 5 p.m.
e tl.,o pr,ovi��:de 'i'in��f"oril,nat,"ii"o,��n ,on,the plan update pracess, reeview hiazail-ds, and gathier f ,edlback
fr,om thie P'Libill"I'llicill.
'o rect ister"t,o receive ng the, meeti Link visit
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WNNPOE C MMU Y DEPARTMENTS SER RO 110ES,/PG RAMS O UR ONIT FIND IT FAST
C 0 u im I Y
F L 0 1)11 E)A................
Calendar
View aIll callendairs is the default Choose Se,lle,ct a Calendar to view a specific calendar.
Select the arrows on either side of the current mionth to change the month.
F hild it Facifity J12 INotify me if F�rint Subm,,rlbe to liu,allenidlm
jlijjjl 11 NINE 11
PAMurfl hcr Fliovii.)Ius
fll�li III ta I�s
Virtuall Pubilic Imeetiling:Locall Mitigation Strategy&Risk 1)a te Marchi 13,2025
11 liuirsdaor,Mairchll,".l,2f125 Tlirnw 5 00 PIA-7 010 PM
L ocaflom! For more informabori about tl"iie plan
Update and to register to receive the
lVIonroe County is updating the IAulti-Jw sdictional Locall lMitigation Strategy This plaln Update is required for the county and incorporated rneeting Iiink,visit
communifties to rnaintain eligibflity for pre-and post-disaster mitigation funding fioni IFIENIA This effort will also help alll comm unifies identify ljlvls(�'�onli
.......................................................I J...................................
hazard risks,understand vulnerabillity,and develop and pinontize proactivelly mitigating risk.
To kick Gff the p1lanning process,a virtual public meeting will be hrelld on Thursday,March 13 at 5 p.m.to provide information on the p1lan
uj;adate process,revuew the identified hazards,and gather feedback from the public.
For niGre information aloOLIt the pillain Update and to register to recewe the meeting link,vusitwv.,rvi L.1%1S ir,(,-.�inl.
...............................................v'y.........................................
What rs mjfigatron?Mitigafion means redLICIPig the risk of loss from any undesirable event,like IhulrriIcane,flooding,Gir other disasters.In short,niftigatiGn means to minimize loss ot harm.
M arvroe Courity,
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
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A'T'III III1,1 IIE)A III:
There were twelve attendees.The following individuals were in attendance:
— Cory Schwisow,Monroe County Emergency Management
— Liz Lust�berg,Monroe County Planning Department
— Toni Harding,Key Colony Beach Commissioner
— M'Liss B,ordelon
— Carlos,Javier
— Dave
— Harry Appel
— Janine Oliveria
— JW
— Rey
— Ranger Ruffins,WSP
— Abby Moore,,WSP
A(I IIE�)A
I Per qject Overview&Where,we are in the planning process
2 Draft Plan Review
Structure of the Plan
3 Review of Key Plan Components,
Planning Process
b Risk Assessinient
C, Mitigation Strategy
41 Plan Adoption&hilplementation
5 Next Steps
6 Discussion/Feedback on Draft Plan
PP E C''Tt,"'I")V IE IIR Nil III EV\1&V\11-41EI E VV[E A I' III`,JI T II III II IIL P OC III SS
Abby Moore with WSP began the presentation by explaining where we are in the planning process.We
are nearing the end of the planning process as we have drafted the plan and now need to finalize it with
any new or updated mitigation actions that the conuilunities include.The plan will then need to be
adopted and the LMSWG and communities Nvill work-on implementation for the next five years.
S'PR L.)C"'F LJ IF IIE F-Pi I [D[-A,NI
Abby provided ail overview of the structure of the draft plain including a sununary of each section of the
plan,as,follows.
- Section 1:introduction provides background inforniation on the plan,including context and
justification for planning and the scope of the plan.
- Section 2:Planning Proicess,suininarizies how the planning process Nvas conducted and how all
planning requirements were met,including how the coinmunities,public,and stakeholders were
involved in the plan.This section also documents implementation progress of the last plan in
terms of completed and deleted mitigation actions.
- Section 3:Plannhig Area Profile for suininary inforniation on the region and participat�ing
coinniunities,including geographic,climate,demographic,,and economic characteristics of the
region.
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
- Section 4:Hazard Identification and Risk Assessinent contains the bulk of the plan.This
section presents the hazard,identification and profiles each hazard with inforniation on the
location at risk,past occurrences,probability of future occurrence,and vulnerability of people,
property,and critical facilities.
- Section :Capability Assessnient summarizes each community's existing tools,staff,and other
resources that can support the implementation of mitigation projects.
- Section 6:INfitigaton Strategy reviews the goals and objectives of the plan and details how
mitigation actions,were identified and prioritized.Abby explained that existing mitigation actions
from the previous,plan were,reviewed,and pr9ject status updates are reported in the plan.Some
prQjects.were carried forward.
- Section 7:INfitigation Action Plan presents the action plan tables for each community.
- Section 8:Plan IN,laintenance describes past plan integration,opportunities,for future plan
integration,and the process for regular monitoring,maintenance,and implementation of the plan,
including ongoing responsibilities of the LMSWG.
- Section 9:Plan Adoption will document each community's adoption of the plan update.
- Annexes are provided for each participating collununity.The annexes,provide an asset inventory
with a full critical facility list,risk assessment data with vulnerability assessment results specific
to the community for spatially defined hazards,and the mitigation action plan.
- Appendix A provides the Plan Review Tool,which documents for the plan reviewers where the
planning requirements were met.
- Appendix B provides planning process documentation denions,trat�ing how the LMSWG,public,
and stakeholders were involved and engaged in the planning process,.
- Appendix C provides mitigation alternatives analysis,documenting the review of mitigatio�n
action options,which is important for the CRS program planning requirements.
- Appendix D describes the County' method)for HMA project prioritization.
- Appendix E lists data and resources that were,referenced in the plan.
KIEY II ll[-AI',J C"C""YM El NITS
Abby reviewed key parts of the planning process,including the LMSWG meetings,the public meetings,
and all the participating communities,'public o�utreach.efforts.She noted that there,is one more
opportunity to get the public involved in the planning process with the review of the draft plan.The plan
has been posted on the plan web site.Conuilunities,can share this link and encourage folks to,read and
comment on the plan.
Abby reviewed some high-level survey results,which were previously presented to the L,MSWG.There
were 126 responses overall.Regarding past hazard experiences,many responses,reference past hurricanes,
and flooding.Regarding recommended steps local governnients could take to reduce hazard impacts,
responses include suggestions for drainage improvements and regulations and guidelines for reduced risk
of future,development�.
Abby presented the Priority Risk index results,as,a summary of the risk and vulnerability ass,ess,nient.She
explained that the PRI is a methodology for comparing the hazards based on five categories:probability,
severity,spatial extent,warning time",and duration.Flood,Sea Level Ris,and Tropical Cyclone were
rated as,"High Risk"for the County.The remaining hazards were rated has"Moderate"'risk.
,Goals&Objectives
,,vic)i rc)e �I ic>cialI Stratego,U�ocjatie J 1G i way 2(),2 5
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
Abby reviewed the updated goals and objectives,discussed at tile previous,LMS,WG meeting.The plan
goals and objectives are as follows:
Goal 1:Pi-otect and maintain the life,,health,safety,and welfai-e of the community.
• Objective 1.1:Provide public education and outreach to inform residents and visitors,how to
protect themselves and their property.
• Objective 1.2:Improve preparedness,response,and recovery capabilities to minimize hazard
impacts.
• Objective 1.3:Reduce losses from,business interruption and support long term business viability.
Goal 2:Pi-otect and pi-esei-ve pi-opeFty and assets,including the built envii-onment and natui-al
Ilesoullces.
• Objective 2.1:Retrofit or otherwise protect conununity infrastructure systems,including critical
facilities, ifilities,water,sewer,communications,and transportation.
• Objective 2.2:Use planning and regulatory tools to protect future development and prevent
hazard risks from worsening.
• Objective 2.3:Preserve and protect natural areas and resources,that provide hazard risk reduction
and other beneficial function .
• Objective 2.4:Pursue property protection and structural projects to reduce vulnerability of
existing
Goal 3:Build local capacity to enhance resiliency and enable communities to quickly i-ecoveF fi-oin
hazai-d impacts.
• Objective 3.1:Explore,develop,and implement new pre-disaster opportunities that build
coniniunity resilience.
• Objective 3.2:Ensure continuity and redundancy of critical local government operations and
systenis.
• Objective 3.3:Strengthen regional connections and continue to foster inter-jurisdictional
coordination for risk reduction efforts.
Mitigation Strategy
Abby reviewed a sample of the mitigation action plan toexplain the organization of the table and the
information included for each project,such as the lead agency,timeline for implementation,and potential
founding sources.
Abby asked attendee to review the mitigation action plan and submit any questions or ideas for additional
actions to County"s,consultants,.Suggestions should be submitted by Friday,July 11th.The draft plan is
available for review on the County's L,MS plan website: httLis:/,,/`w,�N,��N,.,mo,iiroe!co,uiityfl-iiiis.coili'.
P[A A ID('11)P"PI,(D N A INII�"�III I'VI[D
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Abby explained that every coinniunity will adopt the plan once it has been approved by F] EM.Moving
forward,the LMSWG will.ineet quarterly to report on progress toward implementation and monitor
Rinding opportunities and iniplenientation of mitigation actions.The plan will continue to be updated
every five years.
I III�XT S'TIIV IIVD S
The draft plan is available f+ r review on the plan website:httl)s:,//NNTww,,moiiro,elc�o-Litityfl-iiiis.,coiii/.Any
draft plan coninients shouldth be sent by Friday,July 11 Cominients will be incorporated into the final
approved version of the plan.
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
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M' rm role County Local ii t i I t i l l S,tra,tegy UI dI ate—Virtual Public Meeting 07- 11- 10 ,1
,t 1 pincca,Att goriiz a I/By ii Clerk
IM01MR01 COUNTY PRIESS RELEASE:
Tlre M1cllinrlr�oe Cv„Jruinrtyr ILocal rrfirr,iclar ilcllinr Strategy update is innear�l.r'cr.,irq`ull.rlletw.„aurld we,ryant to near from yrsu.u..loiur r.,is for yi virtual n-ru,_urrli4c irnlleer,.unng on
Tuesday,Jlriy 11;at 5 n im W,Illeairni abOLA the diruaft l:'lan anid provide Yll a ry'"rdnmenrfLs to the pluairndrurrg tearn:Clio Il<he ire to irleigi isteir to attend.
Tl-rins 1pllainrl eva:Iruates,our corr�irrr.irrut4es Ihazard lusll,:s aIlwsn Vr,ulurleualkrulitues and rstalErplslres goals,oLyJgNr.tuvu.s,and actions,for ue._pu.uc:lurlg iuslk and l:ru.uil«Mfiu7sp IIoNwall
resuiluerrce.lfkrus Ilrlaiur LIlprrpatle i.,-dliso iuleA.ttr.uuuleA.p tsrl thlP CCuu,_ur7ty aiwrld lurlccvr{yo�rarterwi a_ualrr III Llunlitue_ro tcu malnttasluIl eIugl�trmllut,y tu-rir pre-and post d i sa sleir Irrlturpatlaarl
funding ffin m,IF C=MA.
R'ruis imeetung is a n alp pc)it.unity to:
Share YOW expleirpencies y nid ider-ut,.iffwy u-Errurr�uing uIslks
le Discuss Mitigation actIons that willlll errlh airIGlCle pw 011"ui is CIcuu.Inty's resdiency
le FIrcIlvIde fte,e 1p ack that is cru_udd ll ffiar a plan that tr�ruly rel ects and se rve�s or.u:r ccjv,umu.rrruity
Fcjlir iI rc-n e information an OLIt the Iplain rulprrndtle,visit
Key CoPony Beach Facebook Group IIII Join
NI III t'y t'::t ��II WF I.N NI icii III ul';;lu Ilhny B eac�`L II::III iil 1u L III ic Alt !:,1l t p
Vo r Aloe County L uca ll Wtll g tfbIlrm Strattigy U pd ate-Vli rkluu ll IIP a b Ill,c IlM eeetli r g 01"7- 1- . 2 E�w 0 P
M ONHROE,COUNTY'RRESS REIILE IIE,II
T e Monii-oeCourty LIII ca III Wtigafor St rate rategy update iss rmea Ally Ilco rmr Ilplllete, mrlc we want t°io hear from
YOU!J f rt ILIS fora v rtILu ll plub]illy meetjrg on T IIesdzy,,July 11 s�t at.5 pm to plll a ern
a nild piiro iiil le yo L r co nrmin iir m ents t,io the plll a n n°-iIl n°ig team®ICkck here tam nre,gpiiisteiir,to attend.
.
T rll S pll' t III f Gtl I� n III°� II n°I II tli� 111 HII� a rl rusk, n° II n�� r� lil'll iiitilu In,d,
bjlectives,a n d act lio rents fin ii-ed a ciii pug rlisk a r d bluu li IIId li nig I ca III press l JenIic"E.TN°i�iiis p an u p t.e lis II[;,
r 1p lU lilllred for t he cam muulnt a n d li nrn cam rpo rated Ico m iim uiirm lilt III s tlmo n° a lilllrnt ll rf,eII fii Ig a bTJty for,pre-,and p °t-
rfl salter lilt�u atu�o mr f°Iu rtd lil rn g fro rrn FIE°M A.
This m ee'tli rn g is an°i Ilopiportu nII to:
• 'S hh a rle°oum r experiiiencles an,d II de nt li fy nrec u rriiiiirving rll s k s
• DSCrLU-575 iim fii"t�ig at�iorf,actions that Ml ll ue n Haan°ice Monroe Co a n°it°IIIs,,r�e;,hill Ilue�,rtcy
• provfiil e feeldbaiick,that II sI Icrmu c lilalll for„a pll a n•rJ tiliat tr°um Illy Ilr,ef lects a rfd sle ry s IIIou r IIr�llm n�I
�
For miore iiinfll llru° ation4 about t1lie plow update,vIllsp't
IIP ����III,IIIro County, WS
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APPENDIX B:PLANNING PROCESS DOCUMENTATION
City,of Key Colony Beach,FlloIirlidla
at
%,aiiir'oe Co`Unt� Local Mit:Igation SDrat e,gy,Upd-ate-Virtull"`&l',Puiblhr"','Ic
Me,etfiag 0701-20115-5! IIM
MVim NROE COUNTY PRE"I'SS RELEASIE:
Th,e Mionroe-Cou-in-t ILcc&III M'Ibigat'JIM St'ra-teg,update,is IIru ear-ly
com pletell&nd we waInt,t IIII ear froilin you I,Jal n US,far a vlirt!'U&�I P'Li bli�i!C�
mee,tl ii)q an Tuesday",'Jdllly 1 st at,5 III In to le,,a r n,abous t, the,d raft IIplanI 11)d
p teaim,,,Click he,re t, r,egi.,stevto,,e r 'd olvi , you Ir commen:t t1li jp�l sto e, lanan iii q, 'o
e'att nd.
This,,pIIIII&n era luate,ss ouill,cO M IM ILI nd,,"t iies 11' hazaard risk2ciauIrad,
a n 0 ud establ is lili e,s go&��sll objec, a'dIn-d, ac t[ansf r Ire,dL1C_'1'dn,,q IrIIIIIs k,a Ili d
b 'e,q,U I red, fo r�t:111i e,coau n't,U I ld Eng hac&ll reesi I leence,.T11)is plan U pdaIte i,,.-;aals,�a IIr Y,
for-pre..-a illid p,ast-
aa n 6d I)acorpoxated to maii1itaiii)eeliq I its
d[MI s t e r rni"t gati"on fundlilig fmm FlEtvd,A.
This meet i,`�ia IiI a I°)oppartunity, c:
Share,YO>"Llllr',exp,er"i,,,,en c:,es a illid ld"entif reCIL[rn illig risks
Dhill"SCILJS.S,MIAigation actio n,,,,s,that,wflll iih&nce II V ac na.,rao,e C,ou nty''s r,esiJ1ien,,cy
Pmvldle,fee dback that:is.crILIC'1a[for a plan th.,at tr&III, zan r�efle,ctsd series.Y
0 U r co,illin Iim, u I n,,I by
Fc,r m fc,re� a boaut the p.,IIIII&In uipdate,,vi's it,
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J III iry i e n"t
County IILocal Mitigation Strai'tegy IMeetimg-July 1
The Monroe County ILocall Mibgafion Strategy,update,lis Inearly completle,and we iant to heiar fromi
you!]loIn LIS,for a�virtuai pub[ic Imeetiing on,Tuesday,'Juiy I at 5pm t�o learn abotitAllie cli-aft Iplain
and Iplrlovideyour cOmments to,the planning team,Click,Ion the button belowto registeir to,aftend.
This Iplan evalbates our clommunities"Ihazardll risks and vulnerabiiffies,aind estabtishies go4ls,objec
tiVes,and actions for reducing risk and buildnig local IresiIiience.,Thils,pian updaite lis als,,o required fair
the Irounty and incorporated communities to,maii ntain el igibfl[ty for pre-and post-6saster mitigation
ftinding from FEMA.
Thiis Immieeting is Ian IIopportwtity to:
Share yo,ur Iexpei"Winceis and Iid Intlify recurring risks
Discuss mibgauoni aictiiioniis that will enhance Ilmonrne Colunty's resifiency
Provide feledbaick thzt is cruicial for a plan that truly reflects,and seIrves,lour r��nllrmllrUnity
For mo,re illniformabon about the Iplllain update,visft,
II oIII,vroe Cownty, WS
oc�)III III itigadoIII'l SUrategy 3 a u a Iy 2,0 2,6
f:��)age .........z b,
APPENDIX B:PLANNING PROCESS DOCUMENTATION
a City of Mlaratlhilon,Florida
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The p" �mnr urm °it Local Miti ati n Strategy Urpid te I's rillearl
ir-nlllalll t , inrl the pity of r thou and rrro-e COL[inty warit your,.
p rti c i iii:.
W mar Monroe Counit, B CFloridaKeys
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The Monroe Col nit °Loicall Miligiation,Strategy Lf,lpdate iris nearly
rl-np111 t , ind we want to hear fromyou!J irr a for ; irtu ll'pmir lk
meeting ors,Tiuesdayl,July`l at5pm to III r'n abli.the d it a ft:p p n,
and provide OUTcomments t the p1lailj tearn.
Thils pp ri,evaktates ,uur co ni�nii!uri,i tie l"h r-dl il and
v"ullln ,rabi�lliit"l'les,ainid tablishesi 111 ,objectilves,and actiotisfor
reducing,riskand buillding I I res"Hierice This Ip 111 ri u llpdalt i l
required i for the ! nilit an iii rn rp rr t d �m it rr Un iit i t rn ii rm t iii rm
Il iu i ii l i t°for pre-and post-d ii' aii e r rni'Itlgatlbn furl l i iiri l fr,l F E
Thils mileeting is an ppomtuniit°to:
D Sbare yolur exIperiences andidient"ifyrecurrilng risks
D Discuss r�miiiiti tali ri L�� ti rmi tit sill r��p�anc III I�rirr e unt i
re iriI lip r
0 Pr ovidefeedback,that i T i l fi1
r a plan that truly reflect-sand
serves GUr c m muiiit°
For rnore irrf rmabo n aboutthe plasm update n to,ii t r for
meeting,visil vvww IM lu,n roeCo u!,n ty F III.-L IM Si.cloiim
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i°i�iiroe Couilityl LocaI lif'i'gatlon Strat,Egyupdate is iii,early com pill et-E,lla,,,,iii�d we want to hem r f m
yotit! mum°i� s,fm iir a virtual LI 11 1 iii t-n: on Tuie,siday'rJuly I at,l5piiii to ar about t t lilt r-aft ptan
andII I'd of iir o rrmu iii ent t t 111i parr ill"i,°i team.
This, le m°i� i rd and s II IIIII s Ill IIIIISI
and actlion.,sifor r n ;n risk and b n I "i'l local rep I n mm-n ®"This,II IIIII n ulpidate lis also
r u ii iu iir the cc,unty aii'lidnor ated co�iiiiimuiiiiities to miaiiui iit n n eligibl Ay for Ilr `-and pill
diislaster iiiiiin I
Ilnit- t,i n f!L,ii n i n f r RE MA.
"Thisrieti iius a pprtu its to:
® Discuss mitigatlion,actin lis,that WIHIenhan,ce II 0,nr, m u 's iir� i l iiu�non
® Provi'de ifeedbackth,at its crul for,a p l n ,hat tr,ulyl refillects, oe vex r' M MILii, i t
For re-'iim nf"' rn iautio, about tIllie ptan upclate and tc re i ter for the,iiii ting,vis,rt
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Intro Post .20,IFli tier
This is the official government page of Monroe County,Bogard of
County Coarrnrnaissican,ers°° /Y � Monroe COunty BOCC-Florida Ke's
22h
Page.Govenimeant organ,ization The Manroe.County LocaA Mitigation Strategy update is nearly complete,and we want to hear from
you;l Jomra us fora virtual public raeetin-g on Tuesday,July 1 at rpm to learn about the draft plan
µ, M ICti RC�E,CCsLIMaiTy OF and provide your corrrr-n,ents to the planning)team,
us re I.fa:nn dbIr�f�°,r tK;Pa,,-:;re
This;plan evaluates our communities'hazard rusks and vulnerabilities and establishes goals,
4; (305) 92-441 objectives„and actions for reducing risk and bui[ding local resilience,This plasi update is also
required for the county and incorporated 1'rIMU noities to rnarritain eligibility for pre-and post-
r�1 pio rnonr-oaecounty-fl°gray^ disaster mitigation funding from FEM A.
This meeting is an opportunity toa°,
1�„r P,11c,nwrc:-reco,lurrryfty fll cicr,,- ®Share-your experiences,and identify recurring risks
®Discuss mitigation actions that will enhance Monroe County's resiliency
Open now 11 Pro vide feedback that is cruclial fcor a plan that truly reflects and server's our community
For more infern'raticon about the plan update and to register formeeting,visit
pp sir nrsroer�a�ar°rinty°ML f,. °rrwr7n,.
Photos See all I,IIIQrottl;s ll t6 aIYa11re
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F kr tlt,20 5, Multi-Jurisdlc'tlonall Loc i M111:11gatlion Strategy
The lone+e COUnty Local Mitigation Strategy update is nearly complete,and ire want to.hear from you!Join us for a"virtual public meeting on Tuesday,
July 1 st at dprn to learn about the draft plan and provide your comments to the planning team,.Cllllbk here to register to attend.
Ti his playa evaluates crur°communities'Ihrazard risks and sYuInerabiIities sand Istablulshes goals,,lobiectives,,and actions for reducing rislk and building local
resilience-This plan update is also required for the col-mmrty and incorporated aomrau.inities to maintain eligibility for pre and post-disaster rnitigatiioan
funding frorn FEM,..
This rneeting is an opportearr1mty to.:
Share your experiences ant identify recurring risks,
Discuss mitigation actions that will enhance Monroe County's resiliency
Provide feedl)aolk that iiis crucial for a plan tl,uat trLtly reflects and s,&w'ves Cl Ur community
For more information about the plan Update,Osit �w.Minionirl-oeCold-uraty"IFL.-LM ..com . i
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Join us,for a virtual I ]i c m eetin on Tiu day,July 1 st t 5 pm,to Il ,ern albout the draft plain and I provide u r co comme ntsto the Ip lIan n i ng,
t arn.',,,°,,,,; fe re to register to atte n d.
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Sent:.Tuesday,July 1,20H 5:52 RM
subject:ISM oiru rope County LOCH l Mitigation Strategy F°inalll Pi a bluir IMeeting
r'eeti rrs,
This immess::age,iir.biaingsent oun behalllllf of Beiren L�iin e�nllber,g,Senio,r Director Sp, nso,u•'ec:l Pro r uni s..
Foi,r a�iii t: �ees;th-a t e r;e&kYe:�rTfs f Moiw oe to mmN FL,Vtr is behrig s h•��a rep"with yov apri,behalf of 6w e,r,LbraciaribeF,Sar),ior irez tor Pro,g1ravis,in h er rofe as
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Th m;r eair°„���• r� �°� r� �� �� te fs-u� rW" w��� i1ip1e•� ,��r�wd`� r�r � t d° �� v l����i r. w���.�� e-u�,,�.� r�l �'� c)D,I�Jtai �;� tilieti,� �r���� ?,�,r�a� °� � ,� �� ,� rr� ���.�o�Ewa M•a.ft piairi
to the lamihn ream ClicA:+her no efrfistarto attefid.
This pi"ari zard risksain,d,vufne%rb�fft:ires io-td asfabUs.,,hes g'ots,objectives, i,,itt actioris fm rerk.icr:ing irsk iri b_,r:�rvAc.YA�j:,,focal ieskreilze.This
pfia,prz opctate irs afso i ecJra "for,Vie c m.;ei ty c oe7.i�:�r ��i:�rt:r e to,imah7ta.,47 etr;r: tir y for
aye irz p,,ms t iis s rai inlifti•ia tim tr„av7dra frar mFT .
This,i°ai,eet•ir?g is aii,oppoit tr?ty t o:-
® Share�,m;r expi eri�ee'ca ar?d r• eint f
- isc� j s i,,iiirtr;'i tiaa-,a,ctiiaimsthat will eti):i pmas r401r?r ie `OILIM 's
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T h a cik,s,
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The CoFleg�e of the Florida,IlKeys
5901 Ea,Hege Road epy Weat°,FL'330340
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Visit iut Key Wiest Llve,,WbrIk&Relocate TIhie hIi&mber
PUBLIC, INPUT REQUESTED REGARDING LOCAL HAZ ARD RISKSAIN�D
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NE WN**2 5.Mlultijuaris,dictionall Local Mitigation Strategy 5 year Update.For more information about the plan update,visi,t the project
�. ebsite at htt 1...)roe c or4urity-L-lr:r) c,,g:���, In the site you will find inform tion, knout upcornin l land past Local it d atio,n
Strategy Working Group rneetin s and public rneetin s,a link for.the public survey,abaft documents,and other ni tir altion planning
resources.
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Bridge.Traffic delays are e peeted northbonuidand,sonahbound,prom,xl the area vi,,-hile work is
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Updates
he `ompr heiisl.v a Plan,proces Vi °East has
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�»,.w ... after l rstination for pnerations,to come.'To loam,niore,about tl e
Coxm�wehensiTkie"Plan,Click here
Free CanceiScreening-with,,Syl st r ,ancer Center-:Februauarly 128,
liar ster Co y°Lpr hensive,Caiwer ` ntef's 't'1 t L tte ;1 n..Engageni nt helps
u miiiiuiu i s,:i�n,,South,,Florida,id trust:may,not have a cew� to he lth re.They"vi gut t help people,
" p by pr t k hig,flee caner screetilng� d,
' .���n at �:r,��ta :a��t � �� � :..�
Lei-kicew,,„as viellas education on ways to prey gut anddetect a nc r earl.
The Sylvester bit,will beat Centelunial Ban:in Is"l ni ra (IMIl l; l),on Friday,:February,2 ..
The teani will be them to to about cancer pre euition aixil T
le in more and tt ri -ar ti v llle're�,ve can.offer these screenings.,call 3 .-43-112 or v isit
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un. Launches Local Mitigalion Strafep7 Update,
Nif,oilroe,Coiuit�r is updatin.g the Loca mitug to n Stratepr.:Local:
ar l�u t :ut r uIred,to prt-parezaid,update these pleas to e eligible,for FEMA hazard.
mitigation,assistwice,grants.Public mput�is critical to the planning process."P'lease,take afeili,,-
iu p l to pro,,�ide yone input o l ris
ks sks ai l miti ti r1
options Cilick,heye, or the si:ur ey
For ni r the plan update, the project,vi eb it,at
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mid past L 1.1�Mitigation,S tr to °°W,or° ing oup ineefirz�. d,public n tin .,a,,link for the
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pul lu gun e p p p
IIMoirvroeCowrity, WSIII:
III t.t III ill t t.,t iii iii ..lii ii iii III Ill oc�III III iii t iii atiii oii°m S U,a to g a iii".m u a ili a
IIC:)i t.m
APPENDIX B:PLANNING PROCESS DOCUMENTATION
Public Survey
Monroe County distributed and publicized a public survey, shown below,that requested public input into the Local
Mitigation Strategy planning process and the identification of mitigation activities that could lessen the risk and
impact of future flood hazard events. The survey was announced at the first public meeting,provided via a link on
participating jurisdictions web and social media accounts, and made available online on the plan website.
uni'incarporated monrae COUrIt
d
5
w ey Vke't
��'4•<..����^ryU IMaratholl
ISI,imcrad
....:° II CLASt Kie of!%Ab sir e Courtwy bUt work ar i e eate,iii11 l%A,011r Em C01111ty"
VJ ry �q
2 Have u ever experleticad ar been Impacted by a Ihazard or disaster En Monroe o unt
Ye
No
IIIf you answered"Yes"two qu tlon ,please explain,your mmli) riienice an,d where it,acc u;rr
IIP ����iii iiiro Co miii WSIII:����
IIL..�.ou III III iii t iii a t iii aiir.''m S Ui,a tog a iiir.''m m a 2 2,
APPENDIX B:PLANNING PROCESS DOCUMENTATION
4 -nmunity berng impact On a scalle,of 1-5,how conce rn ed are youabout the,possib llit iy of your i co ted bya hiazard event?
"1 2 3 4 5
Not at a I I conceeniued Vfany conc,emped
5 IPlease review the Il iii'st of hazards below atid irate each Ihazard based&n Ihow,much,rii'sk,you th�'ink,lit ploses to your c&rnimunlity
No,risk Lav,,Irisk Moderate Irisl High Ilrilisk.
Caasta�l�Erlc&�'011
Droug ht
Extreme Heat
Flood
Sea Level Rl se, C 11 mate
C") CD C")
Change
Severe Storms(Thlunderst0riii
Wind,Itrql1nincl,Hail)
Tornado&VVatl&rsp0LftS
Tropical Cyclones
Wididfire
Cyber Attack
CI
Rad'dlcqlical�ncjjrdeint
6IIV your Ihome located'In a floodpllalti?
Ye's
Niol,Iblft 1I still expe-rillence floloding
d0nit know
7 Igo yoti Ihave flood rnsuratice for your hiornle,and/&r personall property?
t�lo
d cn't now
Moiriiroe County, WS
ouflI III itigadoiii-'l SU,a tee y 3 a iii.mu a ili y 2,0 2,6
C:)lage Ll.8
APPENDIX B:PLANNING PROCESS DOCUMENTATION
8m Ilffyou da NOT hiave flo,ad inisurance,What Is the reasain?
-t expeasive
t
S
never ireally caasidlered it
d on't iced'It beCaUSe,imy home ellevated lar other wlise pratected
11 1)t II Ill!f
9. Have you take nanyactlions to Ipratect yaur ham r ineigliborlhood from Ihazards?
............
ye'S
...............
No
10 Ill fyou answered"Yes"two,quiestil,on 9,what c t ii in Ihave you Implemenited?
E.Dr(lier"rOLH'
11 Do you Irma^ what goverri[rnent off ice to contact to learn rn,ore aboult your hazard irisks and how to reduce vdlnerablIlllty uim1 yotir area
y is
No
12 What are some ste ui III, caI governirnent,could take W reducethie rIsk,of future hazard damages in your,neigliborhood?
M arvroe Courity, WS
ouflI Mitigatiar''i Surategy 3 a r''i u a i��y 2,0 2,6
C)lage Ll.9
APPENDIX B:PLANNING PROCESS DOCUMENTATION
13 IMany,c,om� muln�lt,y-w,llde,actlivlitii can redulce cm ;u irisk fi'orn hiaz&rds.These activitiesgien i-atly falill int'o one of the fdllowungi six bi'oad
categories:
• Prevention: u urictu' tu° n ir latoi-yactllons,plans,po]'Ic lies,atid oirdlniances that unfl uic Ihow IIan us deveIloped an�d
b ul 11 d'I'ng s errs bu'1'lt.Exa,mples,include ptgnm"17g at?,d zoning,buddr'ng codess,open sp Grce p,resew tioi�7,lat?,d use,Gu7 d floodpfain
regutgt�bns
• Property ProUction:actl,ms that'1'nvollve the imodu"uficat.uoiii[,of,exiistu'u'r�g buHdlings to Iprtct them frot'n a hazard or i'�emove thiern
from a Iliazai"dous area.,Examptes�,'i7,dude Grcqu,�'s4trbn,retocal�bn,elevafl'ot?,,structu ral retrofits,andstorm shutters.
• -ve oi"restore the ftmctiotisof natu�41,systerns.,N atu ral Resou rc e Pro U c :actl tion ,ms th at mun itniz e h azai'd losses r alnd pesei, 11
Examples,r'ndude floodplain protectrbn,habitat preservgtioi�7,slope staN',L'Zgtrbn,streGun buffers,vlettand Grt?,d marst?protectio 7,and
fdrest mai7,ogemei'7t.
• Strudurai!IProjects:act lions that liessen the iimp ct:of Ihazai-d Iliy rn wed lifyitig the natural Ipu,ogi"es&lon of a hazai'd.Examples,
include darns,fevees,,floc walls,berms,dra 1 t?,age�"i7frostructure,d,ete t�'ot°71re°t,et7t,r',o,n,b,astt°7s,chant?,ef modffrcalr',ons,retainit?,g waffs,
Gu7d storm sewers'.
• Emergency Servilces:actions that pi'ote,ct IpecmpIlVe an�d pi"operty,duiling atid'Immedlatelly after a hazai'd evetit.,Examptes�"txlude
warm,'t7g SySteMS,,eVG,CU,9tio,i'7 plat?u�7,�'ngl emergei'7,c�v respot?,se train,�'t?,91 Grnd prot ecfll'ot?,off`critr',caf einergency fdc�"h'tiesor systemls.
• IPur blll[c IEducafl,on and Awareness:actlions to ln1o]'rn the public albouit hazairds an�d techniquies they can use to protect themselves
an�d thie'h'property.Examples�,'ndude out reach proj"ects,sd?ool edtllcalrbn programs,library-mlaterl`,afs,c7t?,cl,demon stro,°t,r',o,n,ev ts.
ac 'd&r pui'sui
IP l ran t ease k he se categiorles,by h ow li rnpo rt anl you th lnk'eh,m i for e s youl',commulnIt y to cotls i 1111 g.,
"I-IMost II im ort:ant 2 3 4 5 6�:-Least Imputant
Prevent ian
Property Protection
NatUral IReSOUrce Protection
StrU,CtUral Projects J, J,
Emergency Services
PUblilc Educatian
Moiii,vme County, WS
M t�'j III Ill ouflI III itigadoiii,''l SU,ategy 3 a iii.m u a iii. 2,0 2,6
C:�)age
APPENDIX B:PLANNING PROCESS DOCUMENTATION
14 Whal'I's the best way for you to r-ecelive ation about the irn pacts afhazalrdls and Ihow,t. Ipr tect your hioi-ne o f inelig hborhood'?
Pleaseselect your tqj.)three choices.
P"IESEve
Ne%v spaper
TV Ads/Programming
Radlic)Ads/Programming
Ptl�bli'c�Hlbil-aily
PUI.)l I C wiarkshop/nieetings
113c,holial meetn'ligs
.................... rll�ail;
Eniail
text illn le,ssagle
....................
Loca I ic jover,nment socla I mied 13
Moirvroe County, WS
ouflI III itigatiar''I Strategy 3 a iiir.m u a iii.y 2,02,6
g e
APPENDIX B:PLANNING PROCESS DOCUMENTATION
The County received 126 responses to the survey. Questions and responses are detailed in Figure B.I through Figure
B.14.
...... su���vey ofIII IIIIIII°�
1 W h ere d o yo iFivie'? o,r e it a-"1d[L,-,-,
.....................................................................................................
Micnrce COUnty 51
Key Colony Beach 4
Key West, 20 I III
Lay tan I
Marathian 14,
if islamorada 2.4
1I fiVP-1 CtItSiCIP-1 of monroe County Ib twork or 4
recreate liiin hkicnrce COUrity
r) 20 49, 60
Siiurvey
2 -i'iii/e YOU eviei"'expei'ie-,,ti�ced o1i" by a 1-iaz,&i �o1i"diisast'&ir 1'i-i Moiii nty?
Hic
14%
Yes '11019
No I
Marvroe Cc)urity,IIIIIIIIll r
ouflI III itigatiar''I SU,ategy 3 a iiir.m u a iii. 2,0 2,6
C)iage
APPENDIX B:PLANNING PROCESS DOCUMENTATION
IIIIIIIe "111.3,11, SU��llllvely
ff youariswered 1111"Ves"-to qtiest"lori,2, 1,.-flleaslee,xp��lai I in your experierice and whierleil't OCCUrried, _ray delals,
.....................................................................................................
zte,Sft Res;.Dx(,D nses
'106 "llmia aind IIIIan,-lll
"'2017 Irmal"
Respionses, F Hood i n g 1 n nn yl 110 Use
34 ir-espondelnt;s(32%)answered Hurricane 11'rna foir this,question.
lHolactfing darrvage,Mhr�rwi,,:i an,cill I m,,ua damage,to hame cllar�rtiage tci Tly rllOIpll�p..,,drty
I�xrojp,arty dariaage Big Pine
hurricane Andrew, Hurricane Irma loodiing 114-iniaAllhe latest,-alill hur"rJuani
q5tarfn
l,nsrflca,ne Georges f]oladl Key" n,g Irrvia,and lotheir�lwvrrfcanes,
Pine, wi in da mage ��Key�West I ir -a- inzll I-a irl
Floo-d dainagie, dainru"i-tge Illl rima
Su���lllvey�����?es��po se,Co��ri ce A��boulllt
4,.Ors a sca Il e of 1 5, h0W ClOnclerinved &irel Y'0Ll abOL,lt tlii Ipossibllity of your c amp i-nun"'ItY bleing ii-nj,,aactlecl Iby a Ilhazarld event"?
I ev 1 72
4.40 �i 4 33,
J Ii ev,cc.dI 3 IMENIMVI '17
Ii ev,cc.dl 2,
III
Ii eveIII I III
Marvroe Courity, WS
ouflI III itigatiar''I S lira tegy 3 a iiir.m u a iii.y
C)lage
APPENDIX B:PLANNING PROCESS DOCUMENTATION
e su��,,Rvely
5 Please revilew t1hie IIIist c)"f hazards Ibellcm and iratie eath lh�azarld IIIasield on hlolw nitilch r'i'iisk,you thirdk i'"t posies,tilD Y1011.1riCOMIM
tmity.
0,N iirisk �tl//;!Low irriiiis I uilll,Moderate iirisk 9 High ilislk,
CaastaIIIG E rri siloll
Driought
Ext"T'lee e.HiLmat",
FIIIbod
Sea Leve l R�'s,e.&Climatie Change.
se.,4ier"p.,Storms(Thunclersti sir m W"ii'id,Lightning Hall)
Tor rya ldo,&-Waterspoluts,
Tropical C, bbnes
Cyber Attack
incidien't
1111111.6 Sulllvey III e IIIIIIIo rl se,
6., �s hiornie lblcatecl "hin, afliolloildpla"Fin?
N ic) 22
N ic), [),jut III still experience flooding 6
ill, 11 dian"t know, "'15 6%
Marvroe Courity, WS
our III itigatiar''I Strategy 3 a iiir.m u a iii. 2,0 2,6
C:)lage 51111
APPENDIX B:PLANNING PROCESS DOCUMENTATION
e IIIII1111111.11117 SuIII1111,vely
7 D o yic)u h a vie fl o o d i n s u Ira ri ce f lor ViouIt, hic mle Irbil r 1,-iersoii4III III-qj,-i&rt,Y'-.l-`
lill'as 3,0%
No --3 7"
11 dian"t no 7"
65%
.8 Su��llllllvelly ��Molllt
ff you do IINOT have fliolli 'I risu ra ncle,,,oiliiat"Is t Il i Ireasion?
2
10, It" too expen&'ve 25
11 never reaHy cansi�clerlecht 11
11 dian't neecl It'becalLISEI my hame.'�"s el,eva-tecl lar
112 lotherwilse protectied
lother 11 1
24�:111%
1111111.9 Sulllvey Acllfl�Illo�ns
9 H ave YO L�l t: II an y a icti'lo n s tic, protect yo,u r,horny o ir n e"i I171Ibolrwl7u o o cl, frern Ihaza rd s?
27%
10, lill'eis 91
40 N lo 31 31
73%
M arvroe Courity,
ouflI III itigatiar''I Strategy 3 a r''i u a I�,y 2,0 2,6
C:)lage
APPENDIX B:PLANNING PROCESS DOCUMENTATION
puue ......��V Suiii vey Actiiiaiiris I d�ke�iiri faiii,�M'�i[tiiiiga tiiiaiii%
10. If YOU ansoielrled "'Yes''ll to IglLrestilAD,n ° hatactli'loris Ilhave you impliernented?
.....................................................................................................
at&c"I't Respanses
89 "Mernbi'ane roof,htirricaine window's"ll
Responses Ult pgraded my horn e willh hlUrril�canel Frnpact windows,and doors."ll
20 res,ponidie,ints,(22%)ainswered w[ndbws,a�nd doors fbr this questibill.,
e s��i sta��ilt wii ndb:ws windows,w�lid nwtal
urt i te iryin s i 'Y
in, my� a r,d "hers ,for�all ind
wbws
hLlirr ic&ine dic),,oirs huirricaine shutters sto,rm sh gull tter's
lt'nellta 1 �rolof
db,o,rs,,ancJ'wfrid[ows �ld�ows, anjd� d�%Amjx%.rsc wi�n cl
i ew roof [��'lood n
flO IIev&l IIh t,,j irri ca n e wi ndl ow's Fioi�yile Impact windows, -Storrr,wiFin dows
hI lhirnpact doors
'ica u rr in e tiree roof impact
Suiirvey IIIII'��� IIIIIIIpo iiiii se, 111�,CiiiioWIIIII edge olllfWIII,io to Caiii1illitacilit faiiio IIIIII IIIIe
�o [earn in�icreab,out ya,ur hazard ri�sk,'s and how to redUce vulnerab,Hl 1 1. Do,you know whatgovel,rn�ment,office to ccnt'c':i'c.t't,
ty"in YCIP11",ar"ea?
'Yes 61
5,1196 49%
IN ic, 613
ilftirvroe Cownty, WS
i oufli III itigatiar''I Strategy 3 a iiir.m u a iii. 2,0 2,6
i)lage ill'13,56
APPENDIX B:PLANNING PROCESS DOCUMENTATION
e ......III2 Su����,,vey Suggested
1,2.What are some steIjas YOUr llocal gov&rn imam e,iit cot III d take to reduce the r.ii[sk,of f ut u i, Ihazard daimages iiiin your neilg III
bor
hood? .....................................................................................................
'111:IlR,ebu"ilid/eIlII,eva,te-f'ii",iiendlly city codes""
Responses
1 17%),,ainswered wateir,fair t'hilisquestioni.116 relspondents
stop [xddiing tees llh u It,iri c a lin es 1�1�e ed s Moivroe,County woiHldot,ce 1,iiotjsirlg
hazairdlis ' tICounty
buli'Id"ing cer hiame
roads �h el
treet p, peo p 11 e water drains
s I�d
property owners stoirin water Stop develop,ment
Moirvroe County, WS
M t.1 ouflI III itigatiar''I Strategy 3 a iiir.m u a iii.y
..........
C:)lage Z3 7
APPENDIX B:PLANNING PROCESS DOCUMENTATION
������� ������ �� '������� ��
e ......��3 Su����vey
11 Vi coili mL,i n i-t`y` 'Nic-le ac-,,tivit.iiesi caii ii-edl�.,,ice ctiii-r"I"sk fIroIil These activitiels',gei�)&-A[y fall l OftllP-1 f0]10,
NA"i''r)g 11:11"I'x"',bIIrc),a d c a t,e o Ir i i el,S%,
-q- nd&rcfiria�nces thot� ���h�ow ��and Is de.,"Veta- nd regadllat,cmi,y act'iloIns,.pIIIIIansj, pd�..... ......
lvelqpecl and ai-e inct cie ul pto,yi,,niing anictzoini!'ng,builig codes�,
lar.)Id "Notu',
thp le 11 11 1� P- im f I-c,m,a hla z a r d
Prop irty,PilrotelcbOini:act"icns t��hat-I'��"���"��iivo,,�l�"l���,e"the,mictli"I caticll�n of ex'stinig bL]'�'']�biings"to,prat'tct
or rerrilove them frcm,a b7chAl"CIE"GCZ71,fisitioin re.,torctn" e�esvc tio in, 're-, t 1. a
Na
43
ind s b:i,
11 11 1Z Z Nalurial Res4o,urce,Prjolectio,n:act,J&ns th,at e,h,azia�rcl �bsses.&ncl presei-live rjest o�rje t,he funC',li"Ons of nia�t
tot pres&-vri,tfot -s
Exomp 11 es f'in c�u LJ'e flo otlploi'tT P lr-13,,1i�:77'b l!" r 7 71opi-7,s tob�' vvet
lar-)id morsh q,,c,7.,emetTt,.cr-)d fo i-es,t,m ar L
-ogress"Ibn of a hazar Striuict�u�iml�Pill rlofj"�,ts�� actioiis tIlliat �eslise,n ti,i,,e iIlij,,,)act,of a haza�rd[Dy mod"�"fy'Mng tlie n,atlira��pi
d, dam's".l!'evee.5 bcsin,�.,ch.c;,rzr7tn1
ez7ccli C or-0,stO'rrz?se`w'111I11PFrs.
r a hiaza�rd le ve ri E E,llmerigency Servillicels:actiilclli�,7sthcq't pielol"Die ar)d durilrig la��ncl �aftp
r.)gsys'tems' emeqgeti,c., 'sporzse e
9 Pub�11111c�Ediluical:110inii a�ini�ild inf olrni thim- hazards'lai,,id t c&n LISe to
projaefty. L -l' pr scimi,ol ed,'L,rcat i -L p rotH,e c,'t'th�emselvies ai,id t"I'lleiii 71o��c 7 qj'��71 im,in urroc
7,,r 7rris", ll,,n,,7i
Gt`P-i?'101,�.. l,"ir.femot7stiz7t.io n eve-ints,
pLursstiirg P��k-maslvLm rarik thes"Se cate,gor'lles, laY you thlink ea6li ic,),�ne fc�r�Juotll`C,&Mi I'll L11 rdil"Ju'"to cc�nissil
le 1 .- s Il,rr PC Arta,nt 9 2 oeir 3 4,, 0 5 .6 I-ieast IIIm part:,&nt
1:,"r,event"'an minim loop I
1:,`r,operty IlPriatection
P�,eSOLJHrce,P"rotection
Structul raII Pri t Jilects
�y
1:"Ub1 iic IlF-I'd1ij caton
0`6
marvroe Courity, WS
ouflI III itigatiar''I Strategy 3 a iiir.,m u a ilia,. 2,0 2,6
APPENDIX B:PLANNING PROCESS DOCUMENTATION
IIIIIIIe ...... Su����,,vey Of I c a tiiQIII11111u
icf�hazards and how to pricotect,y,,-)L.J1- lionileor,ni
-le.cei've,11 nf'icc�rni atio in.3 13,01LI t"t�-Iie 11 lip plaic"I's"14 What", t1-Iie,bes,"t''%may,far yo,uto i
e
llllllllllllllluN ewspaper 31
101
IIIUIIIIIUIIIui
Rad"i s,/IPra iiram m I'l n119- 21 II IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
P I Il'i Illiibracy 5
,chid&I meetings, 3
Ile maid 29
10, "Text.rriiess s.age 45
II_ocIII giInes rnnien t.webs'ite 53
�iilllllllll�lllli� II_ III giinve r n i ein,t sioc,11'all iimecilla 6114,
4
cii 20 40 6 5-111,01 s lo,
Marvroe Courity,III:III III:
ouflI III itigatiar''I Strategy Jar'ivai�'y 2,02,6
C)iage
APPENDIX B:PLANNING PROCESS DOCUMENTATION
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
'I�j G
uulll���� uuum"""' �'uuuuuuuuuum
uuuuuuuuu uuuuuuuuum. um Vo, uuuuuuuu uuuuuuuuuuuum
3: COO
This planning step credits the incorporation of other plans and other agencies' efforts into the development of the
Hazard Mitigation Plan. Other agencies and organizations must be contacted to determine if they have studies,plans
and information pertinent to the Hazard Mitigation Plan,to determine if their programs or initiatives may affect the
community's program,and to see if they could support the community's efforts. To incorporate stakeholder input
into the plan,a variety of stakeholders were identified by the LMSWG and sent an email inviting them to attend a
public meeting,review the draft plan,and provide feedback and comments. The coordination letter sent via email is
provided below.A list of stakeholders detailing their involvement is provided in Table B.3.
Stakeholders were also involved through specific requests for data to support the development of the plan.
Monroe County Ws Update to-Pl,ul l c Meeting Invitation
ation
...... .........
Rep, Rep Al
Ruffin-5,IR�ain eir
��y6 II Ir,�l
Thu P,,,)2; b)2 5 4 15 L:alIl�w�u
^C Schvvisevni-Cory,10 Moore,Abigail
C.0 jcsett,valclez2�, redcros„org; ex:eIcuit:ivechrectorl, ke(s;clivlcovery,com; nialtha0:'�RE.EF org;
tiff ani.,nie7sch@n.V11C 011 i U-Iceys.,org; coiccclheacl@fkcc,mrg; Ivanci lermcleni@fIcc,m-g;+24 others
IBIL611Fs and External
Good afternoon,
!y Ir anie!is Ranger Ruffin andlI II'm a cons ultaint orkling for Monroe o,umiity
Iominoe ounty and!its imlcou laoi ated coimmllumiltiles,have developed am update to theur 020 Multu dun Irsictgcunal Loc�ai PNIllututioinl Strategy.To asslistwiIth this Rrcuc�ess�,tl'ne oulmllty,,imllcor,poited comlmiumllutuesM
sand the ILo,c,a1 IhMitiig;,atiioii �trate yWorf.img, roue are seekiinn stakeholder imll[)Ut an expertise to support the pt anniinn�,effoirt®
, a a i s ��Wrod:�� .�.
We im'vut�� �rul to,attenci a w�ilrt�uaR.I���ulR�luc rn�lfmrrmatir�n�l r�eetimll; m the draft I���lan t �e 1171Ie1cJ on Tuesday,J�uldU<y"1st�It p.m.�vil��C�lu�.ro��o1ft Tean?1:��.YOU can register foi tlme r��eti n;usim tlmi fumll�„II Ru� n�P�ltu n,f�,
r
r
P �ti,
IR�I� u..�t.u�.,n�.li,.ilr�.�ddutu'mm�ll after t1171�n�r�tun ,�fulldr,�ft�ftll7l� u�lrrlauurnR.0 lay����t�df�n n��i� �tlllu���,..m��''uuu.�urin.�_..�_�..�i.,A.11�u�.,,�ifl. F�l,����.nrr�iL�Irrl ��r�u�m�nt:��Irf��dllam�ll��nt:ha�r�ft. lint me at
I'�. �� �� Ifs I f.... '�' R�
u olT�� u�ll°uWwiiliullul�:���u��mou u, uw, .Weappreclia7te anyi�iin put youl Ii�-nay 1f71aveii.
ThankYou fur YOUr assist,nce I n tlhiis effort to,mmanke Mo nroe co mimulrrllitIes safer aiiidl mrure resiiilient!,
Ranger Ruff ins
Hazard Miti atibin&Resi$ience Plllaniner
5helHer
+1 352-2D-8501
IImarvroe Courity, WSIII
III t.0 III II l t.0 III iii lii Ali III III Ill ou III III III t iii atiii aII°m Strategy 3 a IIIr°m u a Iy 2
APPENDIX B:PLANNING PROCESS DOCUMENTATION
"""'"""" IIIIIII"' IIIIIII IIIIIIII����� ""'�"'"""'°°°°°°° t'�IIIIIII: ^Illlllh"' IIIIIII IIIIIII Illlllllllillls"'�'���
First Name Last Name Organization,Title
Non-Profit Organizations
Josett Valdez Regional CEO,South Florida Region of American Red cross
Deborah Koch Executive Director,Greater Miami and the Keys,American Red Cross
Bonnie Barnes Executive Director,Florida Keys History and Discovery Center
Martha Klitzkie Co-Executive Director, Reef Environmental Education Foundation
Tiffani Mensch President/CEO, United Way of the Florida Keys
Carolyn Woodhead Executive Director,Florida Keys Outreach Coalition for the Homeless
Lenny Molen Neece Program Assistant, Florida Keys Outreach Coalition for the Homeless
Jessica Pierce Florida National Parks Association, Executive Director
Educational Institutions
Tamrah Salazar Hill Executive Director,Facilities,College of the Florida Keys
Rachel Oropeza Director, President's Office,College of the Florida Keys
Theresa Axford Superintendent, Monroe County School District
Surrounding Municipalities
Jerry Bell Miami-Dade Assistant Director of Planning
Pete Gomez Miami-Dade County Emergency Management Director
Dan Summers Director,Collier County Bureau of Emergency Services
Amy Howard Emergency Management Coordinator,Collier Emergency Management
Isabel Cosio Carballo Executive Director,South Florida Regional Planning Council
Federal Government
Roy McClure FEMA NFIP/CRS Specialist
David Holcomb ISO/CRS Specialist
Mike Bratcher ISO/CRS Specialist
Sherry Harper ISO/CRS Technical Coordinator
Dr. Dorothy Sifuentes USGS-Caribbean-Florida Water Science Center Director
State Government
Laura Dhuwe Bureau Chief, FDEM Mitigation Bureau
Jillian Kraynak State NFIP Coordinator/State Floodplain Manager,Office of Floodplain
Management
Heidi Hoffman
Environmental Consultant, Florida Department of Environmental
Protection Emergency Response Planning Consultant
Elizabeth Sweigert Director of South District Management, Florida Department of
Environmental Protection
M'Liss Bordelon Environmental Administrator,Southeast District Branch Office Florida
Department of Emergency Management
Business Community
Kerry Baker Executive Director, Key West Chamber of Commerce
Judy Hull Director,Islamorada Chamber of Commerce
Daniel Samess CEO,Greater Marathon Chamber of Commerce
Williams-
Karen President, Florida Keys Board of Realtors
DeCastro
Jodi Weinhofer President and CEO,The Lodging Association of the Florida Keys
III (:)ri roe co u n ty,
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APPENDIX Q MITIGATION ALTERNATIVES
'114
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44 CFR Subsection D §201.6(c)(3)(ii): [The mitigation strategy section shall include] a section that
identifies and analyzes a comprehensive range of specific mitigation actions and projects being
considered to reduce the effects of each hazard,with particular emphasis on new buildings and
infrastructure.All plans approved by FEMA after October 1,2008,must also address the jurisdiction's
participation in the NFIP,and continued compliance with NFIP requirements,as appropriate.
As part of the process of developing the mitigation action plans found in Section 7,the LMSWG
reviewed and considered a comprehensive range of mitigation options before selecting the actions
identified for implementation. This section summarizes the full range of mitigation measures evaluated
and considered by the LMSWG, including a review of the categories of mitigation measures outlined in
the 2017 CRS Coordinator's Manual, a discussion of current local implementation and CRS credits
earned for those measures, and a list of the specific mitigation projects considered and recommended for
implementation.
Mitigation alternatives identified for implementation by the LMSWG were evaluated and prioritized
using the criteria discussed in Section 6 of this plan.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
���������� CA
�����������������������������M�S�II����������� ����������� �������������������������� ������������������������ ������������������������������ ������������������������������ �������������������������� IIIIIIIIIIIIIIIIIIIII ������������������������� IIIIIIIIIIIIIIII
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Once it was determined which flood hazards warranted the development of specific mitigation actions,
the LMSWG analyzed viable mitigation options that supported the identified goals and objectives. The
LMSWG was provided with the following list of mitigation categories which are utilized as part of the
CRS planning process.
— Prevention
— Property Protection
— Natural Resource Protection
— Structural Projects
— Emergency Services
— Public Education and Awareness
Action ideas within each of these categories were discussed and considered for inclusion in the plan. The
LMSWG was encouraged to select actions to pursue within most if not all of these categories so as to
develop a comprehensive approach to hazard mitigation.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
C.
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This section presents a summary review of the mitigation measures that were considered by the LMSWG.
The CRS Credit Sections are based on the 2017 CRS Coordinator's Manual and the 2021 Addendum.
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APPENDIX Q MITIGATION ALTERNATIVES
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
S
Preventative measures are designed to keep a problem- such as flooding- from occurring or from getting
worse. The objective of preventative measures is to ensure that future development is not exposed to
damage and does not cause an increase in damages to other properties. Building, zoning,planning and
code enforcement offices usually administer preventative measures. Some examples of types of
preventative measures include:
— Building codes
— Zoning ordinance
— Comprehensive or land use plan
— Open space preservation
— Floodplain regulations
— Subdivision regulations
Stormwater management regulations
IJ
Building codes provide one of the best methods for addressing natural hazards. When properly designed
and constructed according to code,the average building can withstand many of the impacts of natural
hazards. Hazard protection standards for all new and improved or repaired buildings can be incorporated
into the local building code. Building codes can ensure that the first floors of new buildings are
constructed to be higher than the elevation of the 100-year flood(the flood that is expected to have a one
percent chance of occurring in any given year). This is shown in Figure C.1.
Just as important as having code standards is the enforcement of the code. Adequate inspections are
needed during the course of construction to ensure that the builder understands the requirements and is
following them. Making sure a structure is properly elevated and anchored requires site inspections at
each step.
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APPENDIX Q MITIGATION ALTERNATIVES
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Source: FEMA Publication: Above the Flood: Elevating Your Floodprone House,2000
ASCE 24 is a referenced standard in the International Building Code. Any building or structure that falls
within the scope of the IBC that is proposed in a flood hazard area is to be designed in accordance with
ASCE 24. Freeboard is required as a function of the nature of occupancy and the flood zone. Dwellings
and most other buildings have 1-foot of freeboard; certain essential facilities have 2-3 feet; only
agricultural facilities,temporary facilities and minor storage facilities are allowed to have their lowest
floors at the BFE.
Building codes provide guidance on how to build in hazardous areas. Planning and zoning activities
direct development away from these areas,particularly floodplains and wetlands. They do this by
designating land uses that are compatible with the natural conditions of land that is prone to flooding,
such as open space or recreation.
Keeping the floodplain and other hazardous areas open and free from development is the best approach to
preventing damage to new developments. Open space can be maintained in agricultural use or can serve
as parks, greenway corridors and golf courses.
Comprehensive and capital improvement plans should identify areas to be preserved by acquisition and
other means, such as purchasing an easement. With an easement,the owner is free to develop and use
private property,but property taxes are reduced or a payment is made to the owner if the owner agrees to
not build on the part set aside in the easement.
Although there are some federal programs that can help acquire or reserve open lands, open space lands
and easements do not always have to be purchased. Developers can be encouraged to dedicate park land
and required to dedicate easements for drainage and maintenance purposes.
IIN4oiii,vroe Cownty, WSIII:
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APPENDIX Q MITIGATION ALTERNATIVES
Zoning enables a community to designate what uses are acceptable on a given parcel. Zoning can ensure
compatibility of land use with the land's level of suitability for development. Planning and zoning
activities can also provide benefits by allowing developers more flexibility in arranging improvements on
a parcel of land through the planned development approach. Zoning regulations describe what type of
land use and specific activities are permitted in each district, and how to regulate how buildings, signs,
parking, and other construction may be placed on a lot. Zoning regulations also provide procedures for
rezoning and other planning applications. The zoning map and zoning regulations provide properties with
certain rights to development.
a p
3
A Flood Damage Prevention Ordinance sets development standards for Special Flood Hazard Areas
(SFHAs). Communities participating in the National Flood Insurance Program(NFIP) are required to
adopt a flood damage prevention ordinance that meets at least the minimum standards of the NFIP;
however, a community can incorporate higher standards for increased protection. For example,
communities can adopt higher regulatory freeboard requirements, cumulative substantial damage
definitions, fill restrictions, and other standards.
Another important consideration in floodplain regulations is the protection of natural and beneficial
functions and the preservation of natural barriers such as vegetation. Vegetation along a stream bank is
extremely beneficial for the health of the stream. Trees and other plants have an extensive root system
that strengthen stream banks and help prevent erosion. Vegetation that has sprouted up near streams
should remain undisturbed unless removing it will significantly reduce a threat of flooding or further
destruction of the stream channel.
Stormwater runoff is increased when natural ground cover is replaced by urban development.
Development in the watershed that drains to a river can aggravate downstream flooding, overload the
community's drainage system, cause erosion, and impair water quality. There are three ways to prevent
flooding problems caused by stormwater runoff:
Regulating development in the floodplain to ensure that it will be protected from flooding and that it
won't divert floodwaters onto other properties;
Regulating all development to ensure that the post-development peak runoff will not be greater than it
was under pre-development conditions; and
Set construction standards so buildings are protected from shallow water.
Zoning and comprehensive planning can work together to reduce future flood losses by directing
development away from hazard prone areas. Creating or maintaining open space is the primary way to
reduce future flood losses.
Planning for open space must also be supplemented with development regulations to ensure that
stormwater runoff is managed and that development is protected from flooding. Enforcement of the flood
damage prevention ordinance and the flood protection elevation requirement provides an extra level of
protection for buildings constructed in the planning area.
Stormwater management and the requirement that post-development runoff cannot exceed pre-
development conditions is one way to prevent future flood losses. Retention and detention requirements
also help to reduce future flood losses.
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APPENDIX Q MITIGATION ALTERNATIVES
The CRS encourages strong building codes. It provides credit in two ways: points are awarded based on
the community's Building Code Effectiveness Grading Schedule (BCEGS) classification and points are
awarded for adopting the International Code series. In North Carolina, communities are limited by the
State Building Code Council which has not implemented the most current version of the International
Building Code.
CRS credits are available for regulations that encourage developers to preserve floodplains or other
hazardous areas away from development. There is no credit for a plan, only for the enforceable
regulations that are adopted pursuant to a plan. Communities in Monroe County could receive credit for
Activity 430—Higher Regulatory Standards and for Activity 420—Open Space Preservation for
preserving parcels within the SFHA as open space. Preserving flood prone areas as open space is one of
the highest priorities of the Community Rating System. The credits in the 2017 manual have doubled for
OSP (Open Space Preservation). The participating communities could also receive credit for Activity 450
—Stormwater Management for enforcing regulations for stormwater management and soil and erosion
control. Several prevention actions considered by the LMSWG are detailed below.
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Action# Mitigation Action Reason for Pursuing/Not Pursuing Funding
Prevention Measures Considered by LMSWG and Not Recommended
Continue enforcement of state The County and municipalities all utilize the
building codes and more Florida Building Code;they have enforcement
- stringent local building of such as an ongoing policy and do not need n/a
requirements to commit additional resources through this
plan update process to complete this activity.
Continued enforcement of The LMSWG has established this is an ongoing
policy and is unlikely to need additional
- zoning and development n/a
regulations resources to continue pursuing this
preventative measure
Prevention Measures and Funding Recommended for Implementation
Post-Disaster(Flood) Recovery This plan will help the City bounce back post
Plan
flood event and better able residents to Local,State
rebuild property and mitigate future flood.
Exceeding minimum floodplain regulations
CRS Group to work together will further protect property within the City
on Beyond Minimum and increase potential points gained in the Local
requirements CRS program and reduce flood insurance
premiums.
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Property protection measures are used to modify buildings or property subject to damage. Property
protection measures fall under three approaches:
— Modify the site to keep the hazard from reaching the building;
— Modify the building(retrofit) so it can withstand the impacts of the hazard; and
— Insure the property to provide financial relief after the damage occurs.
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APPENDIX Q MITIGATION ALTERNATIVES
Property protection measures are normally implemented by the �
property although cases technical and financial
p y owner, g in many
assistance can be provided by a government agency.
E
AZA AWAY
Generally,natural hazards do not damage vacant areas. As noted
earlier,the major impact of hazards is to people and improved
property. In some cases,properties can be modified so the hazard
does not reach the damage-prone improvements. For example, a �
berm can be built to prevent floodwaters from reaching a house. This low fill oil all has landscaping to
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
inim izethe adverse li mpact ors the
There are five common methods to keep a flood from reaching
and damaging a building:
.w
— Erect a barrier between the building and the source of the
flooding.
— Move the building out of the flood-prone area.
Elevate the building above the flood level. ,
— Demolish the building. smal ill,wood fame buildings are
the easiest,to relocate
— Replace the building with a new one that is elevated above B aca:: Kennedy HOUS&Movers,HUnt,viHe,,,AL
the flood level.
The latter three approaches are the most effective
types to consider for the planning area.
...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
BARRIERS
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undierseepage and
floodprotection barrier can be built of dirt Or SO1 a driiiiiage � � �m
"berm")or concrete or steel(a "floodwall"). Careful Berg
design is needed so as not to create flooding or
rm alI Ibarriers can be effelctive against:shalI ow f1 o,odin .
drainage problems on neighboring properties.
Depending on how porous the ground is, if floodwaters will stay up for more than an hour or two, the
design needs to account for leaks, seepage of water underneath, and rainwater that will fall inside the
perimeter. This is usually done with a sump or drain to collect the internal groundwater and surface water
and a pump and pipe to pump the internal drainage over the barrier. Barriers can only be built so high.
They can be overtopped by a flood higher than expected. Barriers made of earth are susceptible to erosion
from rain and floodwaters if not properly sloped, covered with grass, and properly maintained.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
RELOCATION
Moving a building out of a flood prone area to higher ground is the surest and safest way to protect it
from flooding. While almost any building can be moved,the cost increases for heavier structures, such as
those with exterior brick and stone walls, and for large or irregularly shaped buildings. Relocation is also
preferred for large lots that include buildable areas outside the floodplain or where the owner has a new
flood-free lot(or portion of the existing lot) available.
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APPENDIX Q MITIGATION ALTERNATIVES
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JILDING ELEVA
Raising a building above the flood level can be almost as effective as moving it out of the floodplain.
Water flows under the building, causing little or no damage to the structure or its contents. Raising a
building above the flood level is cheaper than moving it and can be less disruptive to a neighborhood.
Elevation has proven to be an acceptable and reasonable means of complying with floodplain regulations
that require new, substantially improved, and substantially damaged buildings to be elevated above the
base flood elevation.
DEMOLITION
n`' IWJ
Some buildings, especially heavily damaged or
repetitively flooded ones are not worth the expense to
protect them from future damages. It is cheaper to � w
demolish them and either replace them with new, flood
protected structures, or relocate the occupants to a safer
site. Demolition is also appropriate for buildings that are
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,:..„ �Ju4ui o,�oIDJ'NWuN o^P,ir,�rvjNd4ui4��1V,
difficult to move—such as larger, slab foundation or
rua
-
masonry structures and for dilapidated structures that
are not cost-beneficial to protect.
Demollshing a repetitively flooded home
PILOT RECONSTRUC O
If a building is not in good shape, elevating it may not be worthwhile or it may even be dangerous. An
alternative is to demolish the structure and build a new one on the site that meets or exceeds all flood
protection codes. FEMA funding programs refer to this approach as "pilot reconstruction." It is still a
pilot program, and not a regularly funded option. Certain rules must be followed to qualify for federal
funds for pilot reconstruction.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
RETROFITTING
An alternative to keeping the hazard away from a building is to modify or retrofit the site or building to
minimize or prevent damage. There are a variety of techniques to do this, as described below.
Dry Floodproofing
Dry floodproofing means making all areas below the flood protection level watertight. Walls are coated
with waterproofing compounds or plastic sheeting. Openings, such as doors,windows and vents, are
closed, either permanently,with removable shields, or with sandbags. Dry floodproofing of new and
existing nonresidential buildings in the regulatory floodplain is permitted under state,FEMA and local
regulations. Dry floodproofing of existing residential buildings in the floodplain is also permitted as long
as the building is not substantially damaged or being substantially improved. Owners of buildings located
outside the regulatory floodplain can always use dry floodproofing techniques.
Dry floodproofing is only effective for shallow flooding, such as repetitive drainage problems. It does not
protect from the deep flooding along lakes and larger rivers caused by hurricanes or other storms.
Wet Floodproofing
The alternative to dry floodproofing is wet floodproofing: water is let in and everything that could be
damaged by a flood is removed or elevated above the flood level. Structural components below the flood
level are replaced with materials that are not subject to water damage. For example, concrete block walls
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APPENDIX Q MITIGATION ALTERNATIVES
are used instead of wooden studs and gypsum wallboard. The furnace, water heater and laundry facilities
are permanently relocated to a higher floor. Where the flooding is not deep,these appliances can be
raised on blocks or platforms.
Technically, insurance does not mitigate damage caused by a natural hazard. However, it does help the
owner repair,rebuild, and hopefully afford to incorporate some of the other property protection measures
in the process. Insurance offers the advantage of protecting the property, so long as the policy is in force,
without requiring human intervention for the measure to work.
Private Property
Although most homeowner's insurance policies do not cover a property for flood damage, an owner can
insure a building for damage by surface flooding through the NFIP. Flood insurance coverage is provided
for buildings and their contents damaged by a"general condition of surface flooding" in the area. Most
people purchase flood insurance because it is required by the bank when they get a mortgage or home
improvement loan. Usually these policies just cover the building's structure and not the contents.
Contents coverage can be purchased separately. Renters can buy contents coverage, even if the owner
does not buy structural coverage on the building. Most people don't realize that there is a 30-day waiting
period to purchase a flood insurance policy and there are limits on coverage.
Public Property
Governments can purchase commercial insurance policies. Larger local governments often self-insure
and absorb the cost of damage to one facility,but if many properties are exposed to damage, self-
insurance can drain the government's budget. Communities cannot expect federal disaster assistance to
make up the difference after a flood.
The CRS provides the most credit points for acquisition and relocation under Activity 520,because this
measure permanently removes insurable buildings from the floodplain. Communities in Monroe County
could receive credit for Activity 520—Acquisition and Relocation, for acquiring and relocating buildings
from the SFHA. The LMSWG recommended that communities pursue the purchase buildings which are
subject to flood damage in order to return this land to open space.
The CRS also credits barriers and elevating existing buildings under Activity 530. The credit for Activity
530 is based on the combination of flood protection techniques used and the level of flood protection
provided. Points are calculated for each protected building. Bonus points are provided for the protection
of repetitive loss buildings and critical facilities. Communities could receive credit for Activity 360—
Flood Protection Assistance by providing advice and assistance to homeowners who may want to flood
proof their home or business. Advice is provided both on property protection techniques and on financial
assistance programs to help fund mitigation.
Flood insurance information for each community is provided in Section 5 and in greater detail in each
community's annex. There is no credit for purchasing flood insurance,but the CRS does provide credit
for local public information programs that, among other topics, explain flood insurance to property
owners. The CRS also reduces the premiums for those people who do buy NFIP coverage. Communities
in Monroe County could receive credit for Activity 330—Outreach Projects. Property protection
mitigation options considered by the LMSWG are described below.
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Action# Mitigation Action Reason for Pursuing/Not Pursuing Funding
Property Protection Measures Considered by LMSWG and Not Recommended
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Action# Mitigation Action Reason for Pursuing/Not Pursuing Funding
This project was deleted because of a
Islamorada:Acquisition and delay in funding-the included homes
- Demolition of Residential had already mitigated the problem or n/a
Structures sold the home to new owners who
mitigated on their own.
Property Protection Measures and Funding Recommended for Implementation
Monroe Elevate Buildings Located This effort will help the County and Cities Local,
County and within Flood prone Areas protect properties that are regularly State,
Municipalities flooded. Federal
This effort will help the Village protect its Local,
Emergency Back-up power
Islamorada critical facilities to provide continuity of State,
for Critical Facilities
operations during a flood or other event. Federal
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Resource protection activities are generally aimed at preserving(or in some cases restoring)natural areas.
These activities enable the naturally beneficial functions of fields, floodplains,wetlands, and other natural
lands to operate more effectively. Natural and beneficial functions of watersheds, floodplains and
wetlands include:
— Reduction in runoff from rainwater and stormwater in pervious areas
— Infiltration that absorbs overland flood flow
— Removal and filtering of excess nutrients,pollutants and sediments
— Storage of floodwaters
— Absorption of flood energy and reduction in flood scour
— Water quality improvement
— Groundwater recharge
— Habitat for flora and fauna
— Recreational and aesthetic opportunities
As development occurs, many of the above benefits can be achieved through regulatory steps for
protecting natural areas or natural functions. This section covers the resource protection programs and
standards that can help mitigate the impact of natural hazards, while they improve the overall
environment. Six areas were reviewed: ��
�Fh II 'Nuu
— Wetland protection
— Erosion and sedimentation control
— Stream/River restoration
— Best management practices
— Dumping regulations
— Farmland protection
Wetlands are often found in floodplains and topographically depressed areas of a watershed. Many
wetlands receive and store floodwaters, thus slowing and reducing downstream flows. They also serve as
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APPENDIX Q MITIGATION ALTERNATIVES
a natural filter,which helps to improve water quality, and they provide habitat for many species of fish,
wildlife and plants.
Farmlands and construction sites typically contain large areas of bare exposed soil. Surface water runoff
can erode soil from these sites, sending sediment into downstream waterways. Erosion also occurs along
stream banks and shorelines as the volume and velocity of flow or wave action destabilize and wash away
the soil. Sediment suspended in the water tends to settle out where flowing water slows down. This can
clog storm drains, drain tiles, culverts and ditches and reduce the water transport and storage capacity of
river and stream channels, lakes and wetlands.
There are two principal strategies to address these problems: minimize erosion and control sedimentation.
Techniques to minimize erosion include phased construction,minimal land clearing, and stabilizing bare
ground as soon as possible with vegetation and other soil stabilizing practices.
�.
There is a growing movement that has several names, such as "stream conservation," "bioengineering," or
"riparian corridor restoration." The objective of these approaches is to return streams, stream banks and
adjacent land to a more natural condition,including the natural meanders. Another term is "ecological
restoration," which restores native indigenous plants and animals to an area.
A key component of these efforts is to use appropriate native plantings along the banks that resist erosion.
This may involve retrofitting the shoreline with willow cuttings,wetland plants, or rolls of landscape
material covered with a natural fabric that decomposes after the banks are stabilized with plant roots.
In all,restoring the right vegetation to a stream has the following advantages:
— Reduces the amount of sediment and pollutants entering the water
— Enhances aquatic habitat by cooling water temperature
— Provides food and shelter for both aquatic and terrestrial wildlife
— Can reduce flood damage by slowing the velocity of water
— Increases the beauty of the land and its property value
— Prevents property loss due to erosion
— Provides recreational opportunities, such as hunting, fishing and bird watching
— Reduces long-term maintenance costs
Communities are required by state and federal regulations to monitor storm water drainage outfalls and
control storm water runoff.
Point source pollutants come from pipes such as the outfall of a municipal wastewater treatment plant.
They are regulated by the US EPA. Nonpoint source pollutants come from non-specific locations and
harder to regulate. Examples of nonpoint source pollutants are lawn fertilizers,pesticides, other
chemicals, animal wastes, oils from street surfaces and industrial areas, and sediment from agriculture,
construction,mining and forestry. These pollutants are washed off the ground's surface by stormwater
and flushed into receiving storm sewers, ditches and streams.
The term "best management practices" (BMPs)refers to design, construction and maintenance practices
and criteria that minimize the impact of stormwater runoff rates and volumes,prevent erosion,protect
natural resources and capture nonpoint source pollutants (including sediment). They can prevent
increases in downstream flooding by attenuating runoff and enhancing infiltration of stormwater. They
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APPENDIX Q MITIGATION ALTERNATIVES
also minimize water quality degradation,preserve beneficial natural features onsite,maintain natural base
flows,minimize habitat loss, and provide multiple usages of drainage and storage facilities.
BMPs usually address pollutants that are liquids or are suspended in water that are washed into a lake or
stream. Dumping regulations address solid matter, such as shopping carts, appliances and landscape
waste that can be accidentally or intentionally thrown into channels or wetlands. Such materials may not
pollute the water, but they can obstruct even low flows and reduce the channels' and wetlands' abilities to
convey or clean stormwater.
Many cities have nuisance ordinances that prohibit dumping garbage or other"objectionable waste" on
public or private property. Waterway dumping regulations need to also apply to "non-objectionable"
materials, such as grass clippings or tree branches,which can kill ground cover or cause obstructions in
channels. Regular inspections to catch violations should be scheduled.
Many people do not realize the consequences of their actions. They may, for example, fill in the ditch in
their front yard without realizing that is needed to drain street runoff. They may not understand how re-
grading their yard, filling a wetland, or discarding leaves or branches in a watercourse can cause a
problem to themselves and others. Therefore, a dumping enforcement program should include public
information materials that explain the reasons for the rules as well as the penalties.
Farmland protection is an important piece of comprehensive planning and zoning throughout the United
States. The purpose of farmland protection is to provide mechanisms for prime,unique, or important
agricultural land to remain as such, and to be protected from conversion to nonagricultural uses.
Frequently, farm owners sell their land to residential or commercial developers and the property is
converted to non-agricultural land uses. With development comes more buildings, roads and other
infrastructure. Urban sprawl occurs,which can lead to additional stormwater runoff and emergency
management difficulties.
Farms on the edge of cities are often appraised based on the price they could be sold for to urban
developers. This may drive farmers to sell to developers because their marginal farm operations cannot
afford to be taxed as urban land. The Farmland Protection Program in the United States Department of
Agriculture's 2002 Farm Bill (Part 519) allows for funds to go to state, tribal, and local governments as
well as nonprofit organizations to help purchase easements on agricultural land to protect against the
development of the land.
There is credit for preserving open space in its natural condition or restored to a state approximating its
natural condition. The credit is based on the percentage of the floodplain that can be documented as
wetlands protected from development by ownership or local regulations. Communities in Monroe
County could receive credit for Activity 420—Open Space Preservation for preserving a portion of the
SFHA as open space.
Additionally, credit is available for Activity 540—Drainage System Maintenance. Having a portion of
the drainage system inspected regularly throughout the year and maintenance performed as needed would
earn a community credit. Communities could also get credit under this activity for providing a listing of
problem sites that are inspected more frequently, and for implementing an ongoing Capital Improvements
Program.
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APPENDIX Q MITIGATION ALTERNATIVES
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Action# Mitigation Action Reason for Pursuing/Not Pursuing Funding
Natural Resource Protection Measures Considered by LMSWG and Not Recommended
Continued enforcement
All incorporated jurisdictions currently have
of soil erosion and
- sedimentation control ordinances in place,additional funding is not n/a
ordinance. needed for continued enforcement.
The County is prioritizing preservation of open
Acquire land to preserve space through the acquisition of repetitive
- n/a
as open space loss properties in order to achieve multiple
benefits through additional losses avoided.
Natural Resource Protection Measures and Funding Recommended for Implementation
Creation of a natural resources adaptation
Monroe Natural Resources plan ensures the County and its municipalities Local,
County and Adaptation Plan preserve their abundant natural resources that State,
Municipalities serve protective,cultural,and recreational Federal
ro I es.
Add culverts to canals
Monroe Local,
on the East side of the This action will help manage potential water
County and State,
city to improve water backup and protect water quality.
Municipalities Federal
flow and water quality.
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Emergency services measures protect people during and after a disaster. A good emergency management
program addresses all hazards, and it involves all local government departments. This section reviews
emergency services measures following a chronological order of responding to an emergency. It starts
with identifying an impending problem(threat recognition) and continues through post-disaster activities.
I4-011
The first step in responding to a flood is to know when weather conditions are such that an event could
occur. With a proper and timely threat recognition system, adequate warnings can be disseminated.
The National Weather Service(NWS)is the prime agency for detecting meteorological threats. Severe
weather warnings are transmitted through NOAA's Weather Radio System. Local emergency managers
can then provide more site-specific and timely recognition after the Weather Service issues a watch or a
warning. A flood threat recognition system predicts the time and height of a flood crest. This can be
done by measuring rainfall, soil moisture, and stream flows upstream of the community and calculating
the subsequent flood levels.
On smaller rivers and streams, locally established rainfall and river gauges are needed to establish a flood
threat recognition system. The NWS may issue a"flash flood watch." This is issued to indicate current
or developing hydrologic conditions that are favorable for flash flooding in and close to the watch area,
but the occurrence is neither certain nor imminent. These events are so localized and so rapid that a
"flash flood warning"may not be issued, especially if no remote threat recognition equipment is
available. In the absence of a gauging system on small streams,the best threat recognition system is to
have local personnel monitor rainfall and stream conditions. While specific flood crests and times will
not be predicted, this approach will provide advance notice of potential local or flash flooding.
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The next step in emergency response following threat recognition is to notify the public and staff of other
agencies and critical facilities. More people can implement protection measures if warnings are early and
include specific detail.
The NWS issues notices to the public using two levels of notification:
— Watch: conditions are right for flooding,thunderstorms, tornadoes or winter storms.
— Warning: a flood,tornado, etc.,has started or been observed.
A more specific warning may be disseminated by the community in a variety of ways. The following are
the more common methods:
— CodeRED countywide mass telephone emergency communication system
— Commercial or public radio or TV stations
— The Weather Channel
— Cable TV emergency news inserts
— Telephone trees/mass telephone notification
— NOAA Weather Radio
— Tone activated receivers in key facilities
— Outdoor warning sirens
— Sirens on public safety vehicles
— Door-to-door contact
— Mobile public address systems
— Email notifications
Just as important as issuing a warning is telling people what to do in case of an emergency. A warning
program should include a public information component.
The National Weather Service(NWS) established the StormReady
program to help local governments improve the timeliness and cl
effectiveness of hazardous weather-related warnings for the public. To 4?1ormRea
be officiallyStormRead a community must:
Y Y
— Establish a 24-hour warning point and emergency operations center
— Have more than one way to receive severe weather warnings and forecasts and to alert the public
— Create a system that monitors weather conditions locally
— Promote the importance of public readiness through community seminars
— Develop a formal hazardous weather plan,which includes training severe weather spotters and
holding emergency exercises
Being designated a NWS StormReady community is a good measure of a community's emergency
warning program for weather hazards.
S
The protection of life and property is the most important task of emergency responders. Concurrent with
threat recognition and issuing warnings, a community should respond with actions that can prevent or
reduce damage and injuries. Typical actions and responding parties include the following:
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APPENDIX Q MITIGATION ALTERNATIVES
— Activating the emergency operations center(emergency preparedness)
— Closing streets or bridges (police or public works)
— Shutting off power to threatened areas (utility company)
— Passing out sand and sandbags (public works)
— Holding children at school or releasing children from school(school superintendent)
— Opening evacuation shelters (the American Red Cross)
— Monitoring water levels (public works)
— Establishing security and other protection measures (police)
An emergency action plan ensures that all bases are covered and that the response activities are
appropriate for the expected threat. These plans are developed in coordination with the agencies or
offices that are given various responsibilities.
Emergency response plans should be updated annually to keep contact names and telephone numbers
current and to ensure that supplies and equipment that will be needed are still available. They should be
critiqued and revised after disasters and exercises to take advantage of the lessons learned and of
changing conditions. The end result is a coordinated effort implemented by people who have experience
working together so that available resources will be used in the most efficient manner possible.
There are six key components to a successful evacuation:
— Adequate warning
— Adequate routes
— Proper timing to ensure the routes are clear
— Traffic control
— Knowledgeable travelers
— Care for special populations (e.g., disabled persons,prisoners,hospital patients, schoolchildren)
Those who cannot get out of harm's way need shelter. Typically,the American Red Cross will staff a
shelter and ensure that there is adequate food,bedding, and wash facilities. Shelter management is a
specialized skill. Managers must deal with problems like scared children, families that want to bring in
their pets, and the potential for an overcrowded facility.
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Flash flood warnings are issued by National Weather Service Offices, which have the local and county
warning responsibility. Flood warnings are forecasts of coming floods, are distributed to the public by
the NOAA Weather Radio, commercial radio and television, and through local emergency agencies. The
warning message tells the expected degree of flooding,the affected river,when and where flooding will
begin, and the expected maximum river level at specific forecast points during flood crest.
Communities in Monroe County could receive credit for Activity 610—Flood Warning Program for
maintaining a program that provides timely identification of impending flood threats, disseminates
warnings to appropriate floodplain residents, and coordinates flood response activities. Community
Rating System credits are based on the number and types of warning media that can reach the
community's flood prone population. Depending on the location, communities can receive credit for the
telephone calling system and more credits for additional measures, like telephone trees. Being designated
as a StormReady community also provides additional credits.
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Action
Mitigation Action Reason for Pursuing/Not Pursuing Funding
Emergency Services Measures Considered by LMSWG and Not Recommended
Improve Satellite This activity was completed with the
- Communication implementation of Starlink and purchase of n/a
satellite phones for senior management.
Currently post-event rebuilding is regulated
Develop s post-disaster by the floodplain management regulations.
Additional higher regulatory standards will be
- recovery plan to regulate n/a
reconstruction
considered for the floodplain management
regulations that could support mitigation in
reconstruction.
Emergency Services Measures and Funding Recommended for Implementation
Layton/ This certification will improve Layton and
Monroe Become/Recertify as a Monroe County's ability to swiftly disseminate Local,
County StormReady Community information regarding hazardous weather State
events
Planning/Development of
Sister City EOC: Develop a plan Key West maintains records outside of the
Loca I,
Key and implement a Sister City City, however maintaining a Sister City EOC
State,
West Emergency Operations Center will ensure effective continuity of operations
Federal
for large scale pre&post in the event the City is physically inaccessible
disaster situations
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C.2,5 S TR Lii,
Four general types of flood control projects are reviewed here: levees, reservoirs, diversions, and
dredging. These projects have three advantages not provided by other mitigation measures:
— They can stop most flooding,protecting streets and landscaping in addition to buildings.
— Many projects can be built without disrupting citizens'homes and businesses.
— They are constructed and maintained by a government agency, a more dependable long-term
management arrangement than depending on many individual private property owners.
However, as shown below, structural measures also have shortcomings. The appropriateness of using
flood control depends on individual project area circumstances.
Advantages
— They may provide the greatest amount of protection for land area used
— Because of land limitations,they may be the only practical solution in some circumstances
— They can incorporate other benefits into structural project design, such as water supply and
recreational uses
— Regional detention may be more cost-efficient and effective than requiring numerous small detention
basins
Disadvantages
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APPENDIX Q MITIGATION ALTERNATIVES
— They can disturb the land and disrupt the natural water flows, often destroying wildlife habitat
— They require regular maintenance
— They are built to a certain flood protection level that can be exceeded by larger floods
— They can create a false sense of security
— They promote more intensive land use and development in the floodplain
Probably the best-known flood control measure is a barrier of earth(levee)or concrete (floodwall) erected
between the watercourse and the property to be protected. Levees and floodwalls confine water to the
stream channel by raising its banks. They must be well designed to account for large floods,underground
seepage,pumping of internal drainage, and erosion and scour.
Reservoirs reduce flooding by temporarily storing
i Sri r�rl ri �)19f%JJJ' ��
flood waters behind dams or in storage or detention
basins. Reservoirs lower flood heights by holding
back or detaining runoff before it can flow
l r ivli Flo �f Ytt V O
downstream. Flood waters are detained until the flood
has subsided and then the water in the reservoir or
detention basin is released or pumped out slowly a at
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rate that the river can accommodate downstream.
Reservoirs an r an r main idle until a large rain c be dry d e d e u ge
event occurs. Or they may be designed so that a lake
or pond is created. The lake may provide recreational A
benefits or water supply(which could also help Retention pond
mitigate a drought).
Flood control reservoirs are most commonly built for one of two purposes. Large reservoirs are
constructed to protect property from existing flood problems. Smaller reservoirs, or detention basins, are
built to protect property from the stormwater runoff impacts of new development.
A diversion is a new channel that sends floodwaters to a different location, thereby reducing flooding
along an existing watercourse. Diversions can be surface channels, overflow weirs, or tunnels. During
normal flows, the water stays in the old channel. During floods,the floodwaters spill over to the
diversion channel or tunnel,which carries the excess water to a receiving lake or river.
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Structural flood control projects that provide at least 100-year flood protection and that result in revisions
to the Flood Insurance Rate Map are not credited by the CRS so as not to duplicate the larger premium
reduction provided by removing properties from the mapped floodplain. Other flood control projects can
be accepted by offering a 25-year flood protection.
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Action# Mitigation Action Reason for Pursuing/Not Pursuing Funding
Structural Project Measures Considered by LMSWC and Not Recommended
Construction of outfalls, Key West has completed 17 such projects;
- gravity wells,and exfiltration continued maintenance is necessary, but n/a
trenches no further funds are being sought
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APPENDIX Q MITIGATION ALTERNATIVES
Action# Mitigation Action Reason for Pursuing/Not Pursuing Funding
Structural Project Measures and Funding Recommended for Implementation
Monroe County-wide Road Elevation Structural improvements to City and Local,
County and and Drainage Improvements County streets will mitigate impacts from State,
Municipalities (Phase 1 of 2) flooding and aide evacuation procedures. Federal
Improving the seawall will further
Loca I,
701 Palm Seawall:Seawall resilience to flooding,tropical cyclones,
Key West State,
replacement and sea level rise in its immediate
Federal
g
surroundin s
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6 PUBLIC INFORMATION
.
Outreach projects are the first step in the process of orienting property owners to the hazards they face
and to the concept of property protection. They are designed to encourage people to seek out more
information in order to take steps to protect themselves and their properties.
Awareness of the hazard is not enough; people need to be told what they can do about the hazard. Thus,
projects should include information on safety,health and property protection measures. Research has
shown that a properly run local information program is more effective than national advertising or
publicity campaigns. Therefore, outreach projects should be locally designed and tailored to meet local
conditions.
Community newsletters/direct mailings: The most effective types of outreach projects are mailed or
distributed to everyone in the community. In the case of floods,they can be sent only to floodplain
property owners.
News media: Local newspapers can be strong allies in efforts to inform the public. Local radio stations
and cable TV channels can also help. These media offer interview formats and cable TV may be willing
to broadcast videos on the hazards.
��::3sS
The two previous activities tell people that they are exposed to a hazard. The next step is to provide
information to those who want to know more. The community library and local websites are obvious
places for residents to seek information on hazards,hazard protection, and protecting natural resources.
Books and pamphlets on hazard mitigation can be given to libraries, and many of these can be obtained
for free from state and federal agencies. Libraries also have their own public information campaigns with
displays, lectures and other projects,which can augment the activities of the local government. Today,
websites are commonly used as research tools. They provide fast access to a wealth of public and private
sites for information. Through links to other websites,there is almost no limit to the amount of up to date
information that can be accessed on the Internet.
In addition to online floodplain maps,websites can link to information for homeowners on how to retrofit
for floods or a website about floods for children.
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HAZARD
FC)
Residents and business owners that are aware of the potential hazards can take steps to avoid problems or
reduce their exposure to flooding. Communities can easily provide map information from FEMA's
FIRMs and Flood Insurance Studies. They may also assist residents in submitting requests for map
amendments and revisions when they are needed to show that a building is located outside the mapped
floodplain.
Some communities supplement what is shown on the FIRM with information on additional hazards,
flooding outside mapped areas and zoning. When the map information is provided, community staff can
explain insurance,property protection measures and mitigation options that are available to property
owners. They should also remind inquirers that being outside the mapped floodplain is no guarantee that
a property will never flood.
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PROPERTY
T 0
While general information provided by outreach projects or the library is beneficial,most property
owners do not feel ready to retrofit their buildings without more specific guidance. Local building
department staffs are experts in construction. They can provide free advice,not necessarily to design a
protection measure,but to steer the owner onto the right track. Building or public works department
staffs can provide the following types of assistance:
— Visit properties and offer protection suggestions
— Recommend or identify qualified or licensed contractors
— Inspect homes for anchoring of roofing and the home to the foundation
— Explain when building permits are needed for home improvements.
A Program for Public Information(PPI) is a document that receives CRS credit. It is a review of local
conditions, local public information needs, and a recommended plan of activities. A PPI consists of the
following parts,which are incorporated into this plan:
The local flood hazard
— The property protection measures appropriate for the flood hazard
— Flood safety measures appropriate for the local situation
— The public information activities currently being implemented within the community,including those
being carried out by non-government agencies
— Goals for the community's public information program
— The outreach projects that will be done each year to reach the goals
— The process that will be followed to monitor and evaluate the projects
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Communities in Monroe County could receive credit under Activity 330—Outreach Projects as well as
Activity 350—Flood Protection Information. Credit is available for targeted and general outreach
projects. Credit is also provided for making publications relating to floodplain management available in
the reference section of the local library.
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APPENDIX Q MITIGATION ALTERNATIVES
Action
Mitigation Action Reason for Pursuing/Not Pursuing Funding
Public Information and Outreach Measures Considered by LMSWG and Not Recommended
A PPI has been developed which
Promote hurricane and flood distributes outreach materials that
- awareness to residents and businesses. provide hurricane and flood protection n/a
and preparedness information.
Comprehensive hazard mitigation
(prevention) education and outreach Public outreach material has been
- program targeted to government created, published and distributed n/a
employees,the construction industry, throughout county.
and trades,and the general public.
Public Information and Outreach Measures and Funding Recommended for Implementation
Expand Public Outreach: Mapping, The City will expand on its existing
Key outreach,floodproofing,windproofing, public outreach capabilities to provide
Loca I
West individual mitigation actions, information on a wider range of hazards
disclosures,financing,etc. and mitigation opportunities.
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Florida's Administrative Code 27P-22 delegates authority to the LMS Working Group to set priorities
and identify projects. FDEM encourages the LMS to pre-identify(and"bank")projects and gather initial
data to facilitate the priority setting process and aid in more rapid consideration in the post-disaster
period. The LMS allows submissions from jurisdictions,utility agencies, and non-profit organizations,
among others. It is expected that initiatives "banked"into the Mitigation Strategy(found in Section 7) are
identified based on information and data contained within this plan and other relevant resources.
Initiatives are expected to be consistent with current policies and regulations,technically feasible, likely
to have high political and social acceptance, and be achievable using existing authorities and staff. These
details are identified in the preliminary enhanced STAPLEE prioritization introduced in Section 6.
This appendix further details the County's prioritization process for the projects prioritized for HMA
grant consideration.
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Monroe County maintains an evolving list of project initiatives that includes many site-specific
initiatives. This list may be modified periodically. The creation of this list results from three distinct steps
in the process. The timeline for these steps is contained in the table below and each step is defined in
more detail in the sections that follow:
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Timeframe Steps
Quarterly Step 1:Accept NOls to"bank" projects; LMSWG Coordinator updates Mitigation
Action Plan from Section 7.
Post-
Step 2: Entities electing to move projects from the Mitigation Action Plan to
Disaster/When
the prioritized list submit characterization forms; Ranking subcommittee
NOFA is Issued reviews and completed prioritization forms; LMSWG Coordinator updates
prioritization
Step 3: Entities asked to review lists(Mitigation Action Plan and HMA
Annually Prioritized List)to identified projects that are completed,deleted,or to be
carried forward.
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Initiatives may be placed on the Mitigation Action Plan list by any eligible entity that provides minimum
information. New additions to the Mitigation Action Plan during this cycle are considered part of the
"bank"moving forward. The Working Group allows submissions on a quarterly basis, so that eligible
entities are not constrained by an annual opportunity to identify and pursue projects and funding. When
an initiative submits a new project outside of the 5 year LMS update cycle, they are to do so by
submitting a Notice of Intent(NOI) form,which may be obtained from the LMS Coordinator through the
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Monroe County Emergency Management Department. Submission of NOIs require the following
minimum information:
— Name of owner/entity;
— Name and brief description of initiative/project;
— "Best estimate"of project costs; and
— Identification of mitigation category,mitigation goal(s), and hazards addressed.
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
TEP
D.7.2 w TWO: PRIORI .................u�ED MITIGATION INITIATIVES'
Implementation of the identified mitigation actions from Step One, especially site-specific initiatives, is
usually dependent upon the availability of funding. A project that is on the Step One(Mitigation Action
Plan)list is moved to the Step Two (Prioritized) list when the owner/entity anticipates developing and
submitting the formal application to FDEM and FEMA; at this point,the LMSWG is charged with
prioritizing projects for available funding.Notices of Funding Availability(NOFA)may be issued
annually(i.e. for FEMA's FMA and BRIC programs)or after disasters that yield HMGP funds, in which
case NOFAs are usually issued within 90 days. Whether on an annual basis or post-disaster,the LMSWG
members would be notified and eligible entities would then decide whether they are prepared to submit
the applicable information to formalize initiatives from Step One.
The LMS working group is charged with developing a prioritized list of initiatives pursuant to State
requirements (Chapter 27P-22.006); at any given time,priorities may change due to various factors such
as recent damage, availability of non-federal cost share, or changes in priorities of the funding agency.
When a NOFA is anticipated or received,the LMS Coordinator will notify entities that have initiatives in
the Mitigation Action Plan. In order to have an initiative forwarded to the funding agency, detailed data
specified in the Characterization Form,which can be obtained from the LMS Coordinator and will be sent
out with the announcement of a NOFA, are required so that the LMSWG's Ranking Subcommittee can
process and determine priorities—thus creating a Prioritized Initiative (Step Two)list. The most up to
date Prioritized List can be found on the following page. The following minimum information will be
required:
— Name of owner/entity and the point of contact responsible for providing the detailed information;
— Initiative/project title, description of the project, whether it benefits a critical facility, and whether the
applicant has the legal authority to undertake the project;
— Estimate of how quickly the project could be started and how long it would take to complete;
— The LMS goals/objectives addressed, a scope of work and need, and the hazard(s) and problem(s) it
would address;
— Description of the general benefits, including number of people impacted, economic benefits, social
benefits, environmental benefits, and whether historic resources are affected;
— Estimated total project costs and whether a formal Benefit-Cost Analysis has been prepared or if the
estimated benefits are based on the worksheet to approximate a Benefit-to-Cost Ratio;
— Statements regarding feasibility; consistency with other plans,policies, codes and ordinances;permits
and approvals necessary; level of effort to implement; and likely reception by the public; and
— An attachment to approximate benefits and costs.
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In order to maintain records that demonstrate progress toward the mitigation goals, such as the details
found in Section 2.9,the LMSWG recognizes that is important to track completed initiatives as well as
initiatives that are deleted from the list, including those for which sufficient information was not provided
to retain on one of the other lists. At least once a year, entities that have initiatives on either list
(regardless of source of funding)will report whether these initiatives have been completed, deleted, or are
carried forward—subsequently remaining on the appropriate list. At any time, entities may request that an
initiative be deleted. The LMS Coordinator will maintain a list of such action.
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APPENDIX E: REFERENCES
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— Brink,Uri ten; David Twichell; Patrick Lynett; Eric Geist; Jason Chaytor; Homa Lee; Brian
Buczkowski; and Claudia Flores. Regional Assessment of Tsunami Potential in the Gulf of
Mexico: U.S. Geological Survey Administrative Report.National Tsunami Hazard Mitigation
Program. 2009.
— Climate Central Surging Seas Risk Finder,Accessed February 2025
— FEMA Disaster Declarations Summary,Updated March 2025.
— FEMA Mitigation Ideas: A Resource for Reducing Risk to Natural Hazards. 2013.
— FEMA. Monroe County and Incorporated Areas Flood Insurance Study. Revised May 16,2012.
— FEMA. Community Information System, 2025.
— FEMA, ISO. Monroe County Repetitive Loss Data. August 2024.
— Florida Department of Business and Professional Regulation,Florida Building Commission.
Florida Building Code, 8'Edition. 2023.
— Florida Department of Environmental Protection, Division of Water Resource Management.
Critically Eroded Beaches in Florida. Updated August 2024
— Florida Department of Environmental Protection, Office of Resilience and Coastal Protection.
Strategic Beach Management Plan: Florida Keys Region. May 2023.
— Florida Department of Transportation. Florida Bridge Inventory, 2019.
— Florida TaxWatch,Updated April 2020.
— IPCC, 2007. Climate Change 2007: The Physical Science Basis, Contribution of Working Group I
to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. (Solomon, S.,
D. Qin, M. Manning, Z. Chen, M. Marquis, K. B. Averyt, M. Tignor, and H. L. A-2 EC 1165-2-
212 1 Oct 11 Miller, eds.). Cambridge University Press, Cambridge,United Kingdom and New
York,NY,USA.
— IPCC, 2014. Climate Change 2014: Impacts,Adaptation, and Vulnerability. Contribution of
Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate
Change.
— IPCC, 2018: Global warming of 1.5°C. An IPCC Special Report on the impacts of global warming
of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways,in the
context of strengthening the global response to the threat of climate change, sustainable
development, and efforts to eradicate poverty [V. Masson-Delmotte,P. Zhai, H. O. Portner, D.
Roberts, J. Skea,P.R. Shukla, A. Pirani,W. Moufouma-Okla, C. Pean,R. Pidcock, S. Connors, J.
B. R. Matthews, Y. Chen,X. Zhou, M. I. Gomis, E. Lonnoy, T. Maycock, M. Tignor, T.Waterfield
(eds.)]. In Press.
— IPCC, 2023: Climate Change 2023: Synthesis Report. Contribution of Working Groups I, II and III
to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing
Team, H. Lee and J. Romero (eds.)]. IPCC, Geneva, Switzerland,pp. 35-115, doi:
10.59327/IPCC/AR6-9789291691647.
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III .III ill .iii iii ..lii ii iii III IIL...ou III III iii t iii atiii aii°m Strategy Jaiir'iu ai'
APPENDIX E: REFERENCES
— James B. Elsner, Svetoslava C. Elsner, and Thomas H. Jagger. The increasing efficiency of
tornadoes in the United States. Climate Dynamics/vol.45 issue 3-4,pp 651-659.
— Mazzei, Patricia. 82 Days Underwater: The Tide is High but They're Holding On. November 24,
2019.New York Times. https-://www.nytimes.com/2019/11/24/ /florida-keys-flooding-king-
tide.html
— Mentaschi, L. et al. Global long-term observations of coastal erosion and accretion. August 27,
2018. Scientific Reports. https://doi.org/10.1038/s4l598-018-30904-w
— Monroe County local GIS data(parcels, LOMCs, critical facilities). 2024.
— Monroe County Emergency Management Department. Monroe County Comprehensive Emergency
Management Plan. Updated July 2022.
— Monroe County Local Mitigation Strategy, 2020.
— Monroe County Ordinance 006-2020, February 10,2020.
— Monroe County Post-Disaster Recovery Strategy Operational Framework,January 2020.
— Monroe County Rate of Growth Ordinance, 1992.
— Monroe County Recovery Plan, October 2009.
— Monroe County Tax Parcels, 2024.
— National Climate Assessment, 2014.
— Fifth National Climate Assessment, 2023.
— National Drought Mitigation Center, Drought Impact Reporter.
— National Integrated Drought Information System,U.S. Drought Portal.
— National Weather Service.
— NOAA, Coastal Change Analysis Program(C-CAP).
https://coast.noaa.gov/digitalcoast/data/ccapregional.html
— NOAA,National Centers for Environmental Information, Storm Events Database.
— NOAA,National Hurricane Center.
— NOAA, Office of Coastal Management.
— NOAA, Tides and Currents
— North Carolina State Climate Office. Climate Tools.
— Southeast Florida Regional Climate Change Compact.Unified Sea Level Rise Projection. Updated
2019. Accessed February 2025.
— Southern Wildfire Risk Assessment, 2025.
— State of Florida. Enhanced Hazard Mitigation Plan. 2023.
— U.S. Census Bureau. American Community Survey 2019-2023 5-Year Estimates.
— U.S. Census Bureau. 2010 Decennial Census.
— U.S. Census Bureau. 2000 Decennial Census.
— U.S. Coast Guard National Response Center.
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III .III ill .iii iii ..lii ii iii III IIL...ou III III iii t iii atiii aii°m Strategy Jaiir'iu ai a 2,02,6
APPENDIX E: REFERENCES
— U.S. Department of Agriculture, Risk Management Agency, Cause of Loss Historical Data Files,
2007-2023.
— U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration
— U.S. Drought Monitor. February 2025.
— U.S. Environmental Protection Agency Toxic Release Inventory.
— U.S. Forest Service,Wildland Fire Assessment System.
— U.S. Geological Survey Coastal Change Hazards Portal.
— U.S. Global Change Research Program, 2016: The Impacts of Climate Change on Human Health in
the United States: A Scientific Assessment. http://dx.doi.org/10.7930/JOR49NQX
— USGCRP, 2017: Climate Science Special Report: Fourth National Climate Assessment,Volume I
[Wuebbles, D.J.,D.W. Fahey, K.A. Hibbard, D.J. Dokken, B.C. Stewart, and T.K. Maycock
(eds.)]. U.S. Global Change Research Program, Washington, DC, USA,470 pp., doi:
10.7930/JOJ964J6.
— VAISALA,National Lightning Detection Network.
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III .III ill .iii iii ..lii ii iii III IIL...ou III III iii t iii atiii aii°m Strategy Jaiir'iu ai'