Washington Flood Districts and Flood Control Zone Districts by County

Information is from multiple sources. Jurisdictions are encouraged to assist in updating page by contacting MRSC.

Cowlitz County

• Silver Lake Flood Control District
• Lexington Flood Control Zone District (Upper and Lower)
• Cedarbrook Flood Control Zone District - Abolished 2002 (Cowlitz County Res. No. 02-098)
  

Jefferson County

• Flood Control Zone No. 1 (Dosewallips)
• Flood Control Zone No. 2 (Big Quilcene)
• Flood Control Zone No. 3 (Little Quilcene)
• Brinnon Flood Control Subzone
• Quilcene Flood Control Subzone

King County

• King County Flood Control Zone District - King County Ordinance No. 15728 ( 52 KB)created the district and dissolved all existing flood control zones in the county, passed 4-07 

Lewis County

• Lewis County Flood District No. 1
• Lewis County Flood District No. 2
• Lewis County Flood Control District No. 3
• Lewis County Flood Control Zone

Mason County

• Skokomish Flood Control Zone District

Okanogan County

• Flood Control District - Riverside Flood Control District

Pacific County

• Pacific County Flood Control Zone District No. 1 - has four active subzones

Skagit County 

• Blanchard Sub Flood Control Zone
• Britt Slough Sub Flood Control Zone
• Bryson Road Sub Flood Control Zone
• Dunbar Sub Flood Control Zone  
• Hanson CreekSub Flood Control Zone  
• Sedro-Woolley Lateral Sub Flood Control Zone
• Warner-Prairie Sub Flood Control Zone

Snohomish County

• French Slough Flood Control District
• Marshland Flood Control District
• Robe Valley Flood Control District, formed 9-04
• Stillquamish Flood Control District

Spokane County 

• Newman Lake Flood Control Zone District

Walla Walla County 

• Waitsburg-Coppei Flood District (Portions of Touchet River and Coppei Creek in Columbia and Walla Walla Counties)
• Mill Creek Flood Control Zone

Whatcom County

• Macaulay Creek Flood Control District  
• Whatcom County Flood Control Zone District (countywide)
  • Flood Control Zone District Advisory Committee
  • Flood Control Zone District Technical Assistance  

Wahkiakum County

• Upper Grays River Flood Control District

Yakima County

• Yakima County Flood Control Zone District