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Heavy rains, poor drainage, and even nearby construction projects can put you at risk for flood damage. Flood maps are one tool that communities use to know which areas have the highest risk of flooding. FEMA maintains and updates data through flood maps and risk assessments.
Flood Zones. Flood hazard areas identified on the Flood Insurance Rate Map are identified as a Special Flood Hazard Area (SFHA). SFHA are defined as the area that will be inundated by the flood event having a 1-percent chance of being equaled or exceeded in any given year.
Flood maps, known officially as Flood Insurance Rate Maps, show areas of high- and moderate- to low-flood risk. They are shown as a series of zones. Communities use the maps to set minimum building requirements for coastal areas and floodplains; lenders use them to determine flood insurance requirements.
The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National Flood Insurance Program. You can use the information to better understand your level of flood risk and type of flooding.
Use the MSC to find your official flood map, access a range of other flood hazard products, and take advantage of tools for better understanding flood risk. FEMA flood maps are continually updated through a variety of processes.
Flood zones are geographic areas that FEMA has defined according to varying levels of flood risk. Use the dropdown feature below to learn more about your flood zone designation.
The FEMA Flood Map Service Center (MSC) is the official source for National Flood Insurance Program flood hazard information. Use the MSC to find: Your official flood map. FIRM panels. FIS reports. Letter of Map Changes (LOMC) National Flood Hazard Layer data. View All MSC Tools.
This map is used by the National Flood Insurance Program (NFIP) for floodplain management, mitigation, and insurance purposes. The flood map is the official source for determining flood risk within a community. Commonly depicted on flood maps: Flood Zone Designations.
The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard information produced in support of the National Flood Insurance Program (NFIP). Use the MSC to find your official flood map, access a range of other flood hazard products, and take advantage of tools for better understanding flood risk.
Explore interactive story maps that help explain the Risk MAP process, coastal flood risk, use of FEMA mapping data, mitigation planning, and other programs.