Hawaii - Flood Hazard Aeas (DFIRM) - Hawaii Statewide GIS Program

Digital Flood Insurance Rate Map (DFIRM). FEMA Special Flood Hazard Areas for Hawaii County. Source: Federal Emergency Management Agency (FEMA), 2017

Special Flood Hazard Areas Subject to inundation by the 1% annual chance flood: The 1% annual chance flood (100-year flood), also known as the base flood, is the flood that has a 1% chance of being equaled or exceeded in any given year. The Special Flood Hazard Area is the area subject to flooding by the 1% annual flood. Areas of Special Flood Hazard include Zones A, AE, AH, AO, AR, A99, D, V, VE, and X. The Base Flood Elevation (BFE) is the water-surface elevation of the 1% annual chance flood. Mandatory flood insurance purchase applies in these zones..