My Basin photo identifier

My Basin

Green-Duwamish River Resources

Project and Resource Links

Projects in the Green/Duwamish River Watershed

Middle Green River by the mouth of Soos Creek.  Photo courtesy of Joan Nolan, WA Department of Ecology.

Green/Duwamish Watershed Pollutant Loading Assessment

Howard Hanson Dam:

Green River System-Wide Improvement Framework (King County)

Urban Waters Initiative (Ecology)

Salmon Conservation and Restoration in Green-Duwamish and Puget Sound:


Contaminated Site Cleanup Activities

Lower Duwamish Waterway Superfund Site (EPA)

Lower Duwamish Waterway Contaminated Sites & Source Control (Ecology)

Resource Conservation and Recovery Act Corrective Action Sites (Ecology)

Health Impact Assessment: Duwamish Cleanup Plan

Water Cleanup Plans in the Green River Watershed Duwamish

Green River Ammonia-Nitrogen TMDL (1992)

Green River-Newaukum Creek Temperature & Dissolved Oxygen TMDL (2011)

Soos Creek Multi-Parameter TMDL (Under Development)

Water Quality Discharge Permits (state-wide)

'This is a River not a waterway' rock, Lower Duwamish Waterway.  Photo courtesy of Joan Nolan, WA Department of Ecology.

Permit and Reporting Information System (Ecology)

General Stormwater Permits (Washington State)

Federal Permits (EPA)

Lower Duwamish Waterway Source Control Partners

City of Seattle

King County

Port of Seattle


Last updated April 2015