Notice of SEMA's Proposed Floodplain Mapping Change

St. Louis County in partnership with the Missouri State Emergency Management Agency (SEMA) and Federal Emergency Management Agency (FEMA), is updating the Flood Insurance Rate Maps (FIRMs) and the Flood Insurance Study (FIS) report within the City of Chesterfield under FEMA’s Risk Mapping, Assessment, and Planning (Risk MAP) program. Risk MAP is a FEMA program that helps communities identify, assess and reduce their flood risk.

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