National Flood Docs

Your glossary for all things flood related.

Base Flood Elevation (BFE)

The elevation of surface water resulting from a flood that has a 1% chance of equaling or exceeding that level in any given year. The BFE is the computed elevation to which floodwater is anticipated to rise during the "base" flood. As it related to NFIP requirements, the "base" flood has a one percent chance of being equaled or exceeded in any given year and it's also known as the "100-year flood." The Base Flood is the standard in the United States used by the NFIP for new construction, which means that all new structures are to be built (or floodproofed) above this elevation).

The BFE is shown on the FIRM for zones AE, AH, A1–A30, AR, AR/A, AR/AE, AR/A1– A30, AR/AH, AR/A0, V1–V30 and VE.

Related Entries: