Floodplains from 1985

The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP).洪水保险费率地图（Flood Insurance Rate Map，简称FIRM）是国家洪水保险计划（National Flood Insurance Program，简称NFIP）开展洪泛区管理、洪水减灾及保险相关业务的基础依据。