For part (a), if the city or region is not mapped by FEMA, can maps provided by local or regional authorities substitute?
If the project site is not identified on a FEMA floodplain map, local or state flood maps may be used on the following conditions: 1) the map characterizes the floodplain for a 100-year (or greater) flood; and 2) the map shows natural floodplains, not accounting for engineered flood management systems (e.g. levees). Projects may not earn this credit if they are located under the 100-year floodplain, even if the flood risks are mitigated.