Southeast Florida Compact Analyzes Sea Level Rise Risk

SSf epa .gov/arc-x/southeast-florida-compact-analyzes-sea-level-rise-risk

Southeast Florida, with a large population located at low elevation, is among the most
vulnerable regions of the country to climate change. The region is comprised of four
counties (Monroe, Miami-Dade, Broward, and Palm Beach) that share similar geographic
traits and coastal vulnerabilities to sea level rise. Rather than separately attempting to
identify climate projections and vulnerabilities, leaders of these counties recognized an
opportunity to collaborate and identify climate impacts and vulnerabilities across the
region.

A first step was to standardize projections and map sea level inundation. This single
region-wide effort brought core stakeholders from counties, regional water management
organizations, local universities and federal agencies together to create a regional
vulnerability assessment of inundation and flooding. The resulting regional map identified
vulnerable infrastructure, including drinking water and wastewater utilities from across the
region, and was instrumental in informing development of the South Florida Regional
Climate Action Plan. The Regional Action Plan "A Region Responds to a Changing
Climate" provides a comprehensive set of recommendations for local governments,
focusing on sectors such as transportation, natural resource management, emergency
management, and the water sector among others. The Regional Action Plan recommendations on water supply, management
and infrastructure protection efforts has since been supplemented by the implementation guidance on "Integrating Climate
Change & Water Supply Planning In Southeast Florida". The Compact counties, municipalities, and other organization
continue to collaborate on updates to climate projections, including a recent 2015 Sea Level Rise Update, and other common
adaptation resources.

How Did They Do It?	Applicable EPA Tools

Being Prepared For Climate Change Workbook outlines how
communities of any size can take appropriate steps to develop a
vulnerability assessment and risk-based climate change adaptation
plan. For more on illustrating vulnerability to a range of potential sea
level rise and storm surge scenarios sea level rise, view the EPA
Coastal Inundation Coastal Storm Surge Scenario illustrates hurricane
strike frequency and worst-case coastal storm surge or inundation
scenarios.

•	Being Prepared for Climate Change Workbook

•	EPA Coastal Inundation Coastal Storm Surge Scenario

publishing the data publicly, some
information on specific facilities were
excluded due to security concerns.

UNIFIED
SErt I.EVEL RrSF
PROJECTION

SOUTHEAST FLORIDA



Unified Sea Level Rise Projection (37 pp,
538 K,)

Collaborated with neighboring jurisdictions
to develop a vulnerability assessment

•	Four neighboring counties collaborated to
identify the best available geographic
data and climate change information to
assess vulnerability, rather than working
independently.

•	Analyzed and published the anticipated
regional impact of sea level rise on water
and wastewater utilities. Note: Prior to

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How Did They Do It?

Applicable EPA Tools

Encouraged and informed regional action

• Developed regional recommendations
(South Florida Regional Climate Action
Plan) and implementation guidance on
how to integrate climate change impacts
(e.g., sea-level rise inundation, flooding
or saltwater intrusion) within utility water
supply planning.

o South Florida Regional Climate
Action Plan (PDF) (84 pp, 4 MB)

Adaptation Strategies Guide helps communities identify potential
adaptation strategies and inform actions for infrastructure located in
coastal areas.

Adaptation Strategies Guide

•	Provided implementation guidance on
such topics as infrastructure siting and
design, quantifying reduction in drainage
capacity and natural resource
degradation in order to help reduce
climate vulnerabilities to the water supply,
water management services and drinking
water, wastewater and stormwater
management.

•	Municipal and local jurisdictions utilized
this data to inform and support their
adaptation actions, one such example is
Miami Beach's adaptation plans to protect
utility infrastructure from flooding.

Similar Cases and More Information

A community doesn't always have to develop new information, for an example of a community that used existing sources of
information to guide decision making, see Anacortes. Many communities in the southeast may have to deal with challenges to
their source water - whether it is saltwater intrusion, sea level rise, or threats to the facility infrastructure - to learn how a utility
is adapting to ensure source water availability, view Tampa Bay Water. To learn more about the South Florida Compact, view
the Climate Resiliency Toolkit's Collaboration Among Counties Improves Vulnerability Assessments case study.

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