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Washington Flood Districts and Flood Control Zone Districts by County

This page lists the Flood Control Districts and Flood Control Zone Districts in Washington state that MRSC is aware of.

Chelan County

Columbia County

  • Columbia County Flood Control Zone District - Formed 2019 in cooperation with Dayton and Starbuck

Cowlitz County

  • Lexington Flood Control Zone District (Upper and Lower) - Elected Board of Elective Supervisors
  • Silver Lake Flood Control District (1965)
  • Inactive Districts
    • Cedarbrook Flood Control Zone District - Abolished 2002 (Cowlitz County Res. No. 02-098)

Jefferson County

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

King County

Kittitas County

Lewis County

  • Lewis County Flood District No. 1
  • Lewis County Flood District No. 2
  • Lewis County Flood Control Zone District - Resolution 97-15 created county-wide district in 1997
  • Inactive Districts
    • Lewis County Flood Control District No. 3

Mason County

  • Skokomish Flood Control Zone District - Abolished 2014

Okanogan County

  • Riverside Flood Control District

Pacific County

Pierce County

  • Pierce County Flood Control Zone District - Board of Supervisors is the Pierce County Council

Skagit County

  • Skagit County Flood Control Zone District - Board of Supervisors is Skagit County Board of County Commissioners
  • Skagit County Code Ch. 6.36 - Skagit County Flood Control Zone Districts - Creates countywide district
    • Sedro-Woolley Sub-Flood Control Zone
    • Dunbar Road Sub-Flood Control Zone
    • South Mount Vernon Sub-Flood Control Zone
    • Bryson Road Sub Flood Control Zone - Dissolved 2008
    • Dunbar Sub Flood Control Zone - Dissolved 2009

Snohomish County

  • French Slough Flood Control District
  • Marshland Flood Control District
  • Robe Valley Flood Control District - Formed 2004
  • Stillaguamish Flood Control District

Spokane County

Walla Walla County

  • Bolles-Prescott Flood Control District - Created at election of November 5, 1996. Operations suspended at the request of the district. There have been no flood control re related activities or operations in the district since its establishment, and the district did not own or purchase and flood control improvement, per Walla Walla County Resolution No. 10-350, passed 12/30/2010
  • Waitsburg-Coppei Flood District (Portions of Touchet River and Coppei Creek in Columbia and Walla Walla Counties) - no levies 2008
  • Walla Walla County Mill Creek Flood Control Zone - Board of Supervisors is the Walla Walla County Board of Commissioners

Whatcom County

Wahkiakum County

  • Upper Grays River Flood Control District

Yakima County


Last Modified: January 20, 2023