SFHAs are labeled as Zone A, AO, AH and VE Moderate flood hazard areas, labeled Zone X500 (shaded) are also shown on the FIRM, and are the areas between the limits of the base flood and the 0.2%-annual-chance (or 500-year) flood. The 1% annual chance flood is also referred to as the base flood or 100-year flood. SFHAs are defined as the area that will be inundated by the flood event having a 1% chance of being equaled or exceeded in any given year. ![]() Flood Hazardsįlood hazard areas identified on the Flood Insurance Rate Map as Special Flood Hazard Areas (SFHA). Documents include LOMAs found in the "Effective Products" and "LOMC" folders, as well as Revalidations (those LOMAs which are still considered to be effective after a map is revised). Relevant documents can be found for a particular community by choosing to "Search All Products," and finding the community by State and County. To be certain a particular LOMA is currently valid, please check relevant documentation online. This LOMA database may include LOMAs that are no longer effective. Click the LOMA point for a link to the letter (use the arrows at the top of the popup window to bring up the LOMA info, if needed). ![]() The location of the LOMA is referenced in the legal description of the letter itself. FEMA National Flood Hazard Layer Interactive MappingįEMA Flood Insurance Rate Map information can also be found on the Nassau County Property Appraiser's Interactive Mapping site.
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