The intended audience for this article is Agents and Insureds/End Customers.

A: An area inundated by 100 year flooding, for which no BFEs have been established.

A1-A30: Areas subject to 1% annual chance of flood event.

AH: An area inundated by 100-year flooding (usually an area of ponding), for which BFEs have been determined; flood depths range from 1 to 3 feet.

AO: Areas subject to inundation by 1-percent-annual-chance shallow flooding (usually sheet flow on sloping terrain) where average depths are between one and three feet.

AR: An area inundated by flooding, for which BFEs or average depths have been determined.

A99: An area inundated by 100-year flooding, for which no BFEs have been determined. This is an area to be protected from the 100-year flood by a Federal flood protection system under construction.

D: An area of undetermined but possible flood hazards.

V: Areas along coasts subject to inundation by the 1-percent-annual-chance flood event with additional hazards associated with storm-induced waves.

VE: Areas subject to inundation by the 1-percent-annual-chance flood event with additional hazards due to storm-induced velocity wave action.

B: An area inundated by 500-year flooding; an area inundated by 100-year flooding with average depths of less than 1 foot or with drainage areas less than 1 square mile; or an area protected by levees from 100-year flooding.

C: A low-risk area above the 500-year flood level. This means that there is a 0.2% chance that an annual flood will occur.

X: An area that is determined to be outside the 100-year and 500-year floodplains.