Mitigation bank projects

We work in partnership with the U.S. Army Corps of Engineers to certify and regulate wetland mitigation banks in Washington. Find bank-specific information in the interactive map or the "Approved banks" and "Banks under review" lists below.

Location of wetland mitigation banks in Washington. You can find detailed information for each bank by clicking either the symbols within the map or the links to project-specific pages below. (View the full size ArcGis online map.)

Approved banks

These banks have gone through the state certification process and are available for mitigation use:

Clark County: Columbia River, East Fork Lewis, Terrace
Cowlitz County: Coweeman
Grant County: Moses Lake
Grays Harbor County: Weatherwax
King County: Keller Farm, Springbrook
Lewis County: Chehalis, North Fork Newaukum
Pacific County: Long Beach
Pierce County: Upper Clear Creek
Skagit County: Nookachamps, Skagit
Snohomish County: Paine Field, Skykomish, Snohomish
Stevens County: Meadowcroft
Whatcom County: Lummi

Banks under review

These banks are undergoing technical review by the interagency review team and are not available for mitigation use at this time:

Clark County: Wapato Valley
King County: Thom, Port of Seattle
Pacific County: Shoalwater Bay
Snohomish County: Blue Heron Slough
Spokane County: Dragoon Lake
Whatcom County: City of Bellingham

Contact information

Wetland mitigation banking staff

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