- City Club of Portland
- City of Portland
- Gallagher Fiduciary Advisors
- HeronPark LLC
- Multnomah County
- Oregon Department of Environmental Quality
- Oregon Department of State Lands
- Pasadena
- PORTLAND
- Portland Parks & Recreation
- R.B. Pamplin Corp.
- Ross Island Sand & Gravel
- Tetra Tech
- U.S. Army Corps of Engineers
- U.S. Department of Labor
- U.S. Environmental Protection Agency
- Urban Greenspaces Institute
- Vigor
- Willamette Riverkeeper





