Snohomish County adopted the National Flood Insurance Program (NFIP) minimum floodplain management standards and regulations on March 15, 1984.
The county’s floodplain development regulations are meant to be consistent with the degree of flood hazard in specific areas of the floodplain. The intent of the regulations is to:
Snohomish County's floodplain development regulations are found in the following sections of Title 30 (Unified Development Code) of the Snohomish County Code:
If you have questions about floodplain development regulations, please contact Snohomish County Planning and Development Services (PDS) at 425-388-3311. Also see: