Zones on the Flood Insurance Rate Map (FIRM) in which the risk premium insurance rates have been established by a Flood Insurance Study (FIS). The following flood hazard zone designations apply: (1) Flood Zone A: Area of special flood hazard without water surface elevation determination; (2) Flood Zones A1-30 & AE: Areas of special flood hazard with water surface elevations determined; (3) Flood Zone AO: Area of special flood hazard having shallow water depths and or unpredictable flow paths between one and three feet; (4) Flood Zone A-99: Area of special flood hazard where enough progress has been made on a protective system, such as dikes, dams, and levees, to consider it complete for insurance rating purposes; (5) Flood Zone AH: Area of special flood hazard having shallow water depths and or unpredictable flow paths between one and three feet and with water surface elevations determined; (6) Flood Zones B & Shaded X: Areas of moderate flood hazard; (7) Flood Zones C & Unshaded X: Areas of minimal hazard; (8) Flood Zone D: Area of undetermined but possible flood hazard; (9) Flood Zone E: Area of special flood-related erosion hazards; (10) Flood Zone M: Area of special mudslide or mudflow hazards.
FLOOD HAZARD ZONES (DEFINED)
Meaning of FLOOD HAZARD ZONES (DEFINED) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012