A program administered by FEMA that provides flood insurance premium discounts to residents of communities that implement floodplain management practices beyond NFIP minimum requirements. Communities earn points through activities in four categories: public information, mapping and regulations, flood damage reduction, and warning and response. Points determine the community's CRS class (1-10), with each class providing a 5% premium discount in Special Flood Hazard Areas. Class 1 communities receive a 45% discount. The program encourages communities to reduce flood risk, protect natural floodplain functions, and facilitate accurate insurance rating. CRS communities must recertify annually and undergo detailed verification every few years.