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Island County > Planning > Frequently Flooded Areas

​What are Frequently Flooded Areas?

In contrast to other areas around Puget Sound, Island County does not have a major river system. Because of this, the County does not experience the magnitude or frequency of flooding as some communities do in neighboring counties. Frequently flooded areas are coastal areas subject to inundation by a depth, velocity, intensity and frequency of flood waters during major storm events that are of such a magnitude that they pose a significant risk to personal property. Development activities proposed within frequently flooded areas must mitigate for flood hazards and conform to the provisions of ICC 14.02A Flood Damage Prevention.


For more information regarding Frequently Flooded Areas, check out the following Development Information Bulletins(DIB's):

  •  DIB 513:  Developm​ent on Shorelines
  •  DIB 514:  Special Shoreline Setbacks and Buffers
  •  DIB 515:  Bulkheads
  •   DIB 519:  Floodplains

Is your property located in a Frequently Flooded Area? To find out, click on this link to view Island County's Flood Maps.