This section briefly describes the purpose of the FIRM for flood insurance and floodplain management applications. The FIRM itself is a graphic representation of data summarized in the FIS.
For flood insurance applications, the FIRM designates flood insurance rate zones as described in Section 5.0 and, in the 1-percent-annual-chance floodplains studied by detailed methods, the FIRM will show selected whole-foot BFEs or average flood depths.
The Rounded BFE's on the FIRM should never be used when accurate BFEs are required for permitting development or insurance rating purposes.
Insurance agents use zones and BFEs in conjunction with information on structures and their contents to assign premium rates for flood insurance policies.
For floodplain management applications, the map shows by tints, screens, and symbols, the 1- and 0.2-percent-annual-chance floodplains, floodways, and the locations of selected cross sections used in the hydraulic analyses and floodway computations.