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  Flood Zones

Explanation of Zone Designations

Zone Explanation
A Areas of 100-yr flood; base flood elevations and flood hazard factors not determined.
AO Areas of 100-yr shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined.
AH Areas of 100-yr shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined.
A1-A30 Areas of 100-yr flood; base flood elevations and flood hazard factors determined.
A99 Areas of 100-yr flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined.
B Areas between limits of the 100-yr flood and 500-yr flood; or certain areas subject to 100-yr flooding with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium Shading)
C Areas of minimal flooding. (No Shading)
D Areas of undetermined, but possible, flood hazards.
V Areas of 100-yr coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined.
V1-V30 Areas of 100-yr coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined.


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