Flood Hazard - 0.2% Annual Chance of Flood

The Federal Emergency Management Agency (FEMA) has developed the Advisory Limit of the 0.2% Flood Hazard Area to provide a geospatial limit to the Advisory Base Flood Elevations as well as an updated representation the 0.2% annual chance flood hazard area.美国联邦紧急事务管理局（Federal Emergency Management Agency, FEMA）制定了0.2%洪水危险区咨询限值（Advisory Limit of the 0.2% Flood Hazard Area），旨在为咨询性基准洪水水位（Advisory Base Flood Elevations）提供地理空间边界，并对年发生概率0.2%的洪水危险区进行更新表征。