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You can download detailed maps by clicking on the highligted squares in the grid below. Flood Zone Classification Legend is below the image.

FEMA Grid C0259G C0266G C0267G C0267G

Flood Zone Classification Legend

SPECIAL FLOOD HAZARD AREAS SUBJECT TO INUNDATION BY THE 1% ANNUAL CHANCE FLOOD

The 1% annual 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 F lood Hazard Area is the area subject to flooding by the 1% annual chance flood. Areas of Special Flood Hazard include Zones A, AE, AH, AO, AR, A99, V, and VE. The Base Flood Elevation is the water-surface elevation of the 1% annual chance flood.

  • ZONE A No Base Flood Elevations determined.
  • ZONE AE Base Flood Elevations determined.
  • ZONE AH Flood depths of 1 to 3 feet (usually areas of ponding); Base Flood Elevations determined.
  • ZONE AO Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); averagedepths determined. For areas of alluvial fan flooding, velocities alsodetermined.
  • ZONE AR Special Flood Hazard Area formerly protected from the 1% annual chanceflood by a flood control system that wassubsequently decertified. Zone A Rindicates that the former flood control system is being restored to provide protection from the 1% annual chance or greater flood.
  • ZONE A99 Area to be protected from 1% annual chance flood by a Federal floodprotection system under construction; no Base Flood Elevations determined.
  • ZONE V Coastal flood zone with velocity hazard (wave action); no Base Flood Elevations determined.
  • ZONE VE Coastal flood zone with velocity hazard (wave action); Base FloodElevations determined.

FLOODWAY AREAS IN ZONE AE

The floodway is the channel of a stream plus any adjacent floodplain areas that must be kept free of encroachment so that the 1% annual chance flood can be carried without substantial increases in flood heights.

OTHER FLOOD AREAS

  • ZONE X Areas of 0.2% annual chance flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 1% annual chance flood.

OTHER AREAS

  • ZONE X Areas determined to be outside the 0.2% annual chance floodplain.
  • ZONE D Areas in which flood hazards are undetermined, but possible.