Southeast Florida Compact Analyzes Sea Level Rise Risk

Southeast Florida Compact Analyzes Sea Level Rise Risk

Project Summary

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

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 (PDF) (84 pp, 4MB).

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 (PDF) (24 pp, 3.3 MB). 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.


The first step was to collaborate with neighboring jurisdictions to develop a vulnerability assessment. Rather than working independently, four neighboring counties collaborated to identify the best available geographic data and climate change information to assess vulnerability. The four counties analyzed and published the anticipated regional impact of sea level rise on water and wastewater utilities.* 

The group of collaborating counties encouraged and informed regional action. They developed regional recommendations for the South Florida Regional Climate Action Plan (PDF) (84 pp, 4MB) and developed implementation guidance on how to integrate climate change impacts (e.g., sea-level rise inundation, flooding or saltwater intrusion) within utility water supply planning. They also 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.

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

Applicable Tools

  • The 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, view the the USEPA Coastal Inundation Coastal Storm Surge Scenario, which illustrates hurricane strike frequency and worst-case coastal storm surge or inundation scenarios.
  • Adaptation Strategies Guide helps communities identify potential adaptation strategies and inform actions for infrastructure located in coastal areas.

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