Chelan County Unincorporated
City Zoning Code

Those areas located within the one percent chance floodplain, also known as the one-hundred-year floodplain and the special flood hazard area, as defined by the Federal Emergency Management Agency and adopted by the board of county commissioners, are classified as frequently flooded areas. These areas are specified in Section 3.20.090, Flood hazard areas established.

When base flood elevation data is not available from the above information to designate frequently flooded areas, the administrator shall review and reasonably utilize any base flood elevation data and floodway data available from federal and state governmental agencies or other sources including but not limited to historical data, high water marks or photographs of past flooding to make the appropriate designations.

If any question exists regarding whether a development is within the frequently flooded area, the applicant shall have the floodplain delineated by a licensed professional land surveyor and the delineation and ground elevations shall be shown on the site plan.

All development standards within Chapter 3.20, Flood Hazard Development, as amended, shall be complied with.