After that, FEMA will finalize the flood map and send a Letter of Final Determination to each community, stating that the map will become effective in six months. For more information on these products and tools, visit FEMAs Map. Communities are encouraged to use this database to support mitigation efforts and raise awareness. The Flood Risk Database provides a wealth of data that may be used to analyze, communicate and visualize flood risk. Once all appeals are resolved, FEMA will send an appeal resolution letter to the community and all appellants and revise the preliminary flood map as appropriate. A Flood Risk Database (FRD) parallels the FIRM database. A comment, which points out changes needed for any other information related to the updated map (such as a street name or jurisdictional boundary).Īfter the appeal period, FEMA will evaluate the data in the appeals and comments and request additional data, as necessary.An appeal, which is a formal written objection to a new or modified BFE, Special Flood Hazard Area (SFHA), floodway, or flood zone This must be supported by an analysis or scientific evidence showing that the information on the preliminary map is scientifically or technically incorrect.Even if “it hasn’t flooded in a while (or ever),” technical analysis can show that the risk exists.ĭuring the 90-day appeal and comment period, you can submit:

However, the evidence must be scientifically or technically based. Members of the community have opportunities to submit evidence on why they believe their property has been improperly mapped. FEMA provides a 90-day appeal and comment period for new or revised Base Flood Elevations (BFEs), flood hazard zones, and or floodway boundaries. When a preliminary flood map becomes available, some residents, business owners, developers and others may disagree with the flood risk shown in certain areas.

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