The Durability Evaluation Form provides a link to floodplain maps: http://msc.fema.gov But this describes the flood risk of a zone with a lettered code (e.g., AE, A11, B, X) instead of the terminology used in LL 2 (e.g., 100-yr, 500-yr floodplain). Which lettered codes designate areas in the 100-yr floodplain?
All zones that begin with the letter A (e.g, A, AE, AO, A11) or the letter V (e.g., V, V1) are at or below the 100-yr floodplain; projects in zones that begin with A or V do not meet the requirement for LL 2(a).All zones designated with the letter B, C, or X are at or above the 500-yr floodplain (i.e., they are above the 100-yr floodplain); projects in zones B, C, or X meet the requirement for LL 2(a).Zone D designates an area with undetermined flooding risk; projects in zone D should use a different source of information to determine if the requirement of LL 2(a) is met.
Updated 10/1/13 for rating system applicability.