Mitigation bank projects

We work in partnership with the U.S. Army Corps of Engineers and EPA to certify and regulate wetland mitigation banks in Washington. The map below shows the wetland mitigation banks approved by Ecology and those projects undergoing technical review.

Detailed information for each bank can be found using the interactive map or the links below the map.

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

Approved banks are those that have gone through the state certification process and are available for mitigation use. They include:

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

Banks under review

Banks under review include proposed wetland mitigation banks still undergoing technical review by the interagency review team.They include:

Clark County: Wapato Valley
King County: Keller Farm, Thom
Pierce County: Upper Clear Creek

Contact information

Wetland mitigation banking staff