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Gulf of Mexico Coastal Information

This page provides information about FEMA's ongoing floodplain mapping work in the coastal areas adjacent to the Gulf of Mexico. The primary audience for this page are communities and residents along the Gulf Coast, as well as others interested in coastal flood analysis along the Gulf.

Map of the Gulf of Mexico Coastal area, including the states of Texas and Louisiana in FEMA Region 5 and Mississippi, Alabama, Georgia, and Florida in FEMA Region 4.

Home to five States (Alabama, Florida, Louisiana, Mississippi, and Texas), the Gulf coast stretches to include 17,141 miles of tidal shoreline and various ecosystems. Due to its geographical location, natural weather patterns, rapid population growth, and urban development in low-lying areas, the Gulf coast is one of the most vulnerable flood areas in the U.S.

For the past decade, FEMA has been updating Flood Insurance Studies (FISs) and Flood Insurance Rate Maps (FIRMs) for the entire populated coastline of the country to provide improved flood hazard information to coastal communities.  In accordance with FEMA’s Guidelines and Standards for Coastal Flood Hazard Analysis and Mapping, FEMA is performing a detailed engineering analysis and mapping for coastal communities along the Gulf of Mexico. See the Coastal Flood Hazard Analysis and Mapping Guidance page for information on coastal study guidance resources. 

Using updated 1-percent-annual-chance coastal flood elevations, the new flood hazard analysis increases the understanding of local flood risk, encourages mitigation efforts, and improves Gulf coast communities’ resilience to flood losses (life, property, and business).

To obtain information on the status of flood studies in specific Gulf Coast areas, please visit FEMA’s Regional Coastal Analysis and Mapping Gulf Coast websites:

For general information about the FEMA Regional offices responsible for managing the Gulf coastal flood studies, please visit the following websites:

Additional technical information for the Gulf coast can be found at:

For More Information

  • Find answers to many of your questions by visiting our Coastal Frequently Asked Questions page.

  • The Coastal Flood Risk Resources page, organized by resource type, contains links to useful fact sheets, flyers, brochures and other helpful documents produced by FEMA, other federal agencies, state agencies, water management districts and other entities.

Last Updated: 
06/05/2020 - 08:49