Hide Alert

Welcome to our new website. Learn more about what's new.

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.

  • Banks under review are proposed wetland mitigation banks that are undergoing technical review by the interagency review team.
  • Approved banks have gone through the state certification process and are available for mitigation.
Detailed information for each bank can be found using the links below the map.
State of Washington map showing locations of wetland mitigation banks under review and approved as of January 2018. The banks are listed in the text below this map.

Location of wetland banks in Washington. You can find detailed information for each mitigation bank by clicking the links to project-specific pages below.

Banks under review

Clark County: Wapato Valley King County: Keller Farm King County: Thom Pierce County: Port of Tacoma

Approved banks

Clark County: Columbia River Clark County: East Fork Lewis Clark County: Terrace Cowlitz County: Coweeman Grant County: Moses Lake Three Ponds Grays Harbor County: Weatherwax (Ocean Shores) King County: Springbrook Creek Lewis County: Chehalis Basin Lewis County: North Fork Newaukum Pacific County: Long Beach Skagit County: Nookachamps Skagit County: Skagit Environmental Snohomish County: Paine Field Snohomish County: Skykomish Habitat Snohomish County: Snohomish Basin Stevens County: Meadowcroft Whatcom County: Lummi