Bonneville
- Bonneville Power Administration, U.S. Department of Energy
Bureau of Reclamation
- U.S. Department of the Interior, Bureau of Reclamation
Corps
- U.S. Department of the Army, Corps of Engineers
Federal Land Managers
- Bureau of Indian Affairs
- Bureau of Land Management
- National Park Service
- U.S. Forest Service
Federal Project Regulators
- Bonneville
- Bureau of Indian Affairs
- Bureau of Reclamation
- Corps of Engineers
- Federal Energy Regulatory Commission
FERC
- Federal Energy Regulatory Commission,
U.S. Department of Energy
Fish & Wildlife Management Agencies
- Fish and Wildlife Service, U.S. Department of the Interior
- National Marine Fisheries Service, U.S. Department of Commerce
- Oregon Department of Fish and Game
- Idaho Department of Fish and Game
- Montana Department of Fish, Wildlife and Parks
- Washington Department of Fish and Wildlife
State Land Managers
- Idaho Department of Labor
- Oregon Division of State Lands
- Montana Department of Natural Resources and Conservation
- Washington Department of Natural Resources
State Water Managers
- Idaho Department of Water Resources
- Montana Department of Natural Resources and Conservation
- Oregon Department of Water Resources
- Washington Department of Ecology
Columbia Basin Indian Tribes
- Burns-Paiute Indian Colony
- Coeur d’Alene Tribes
- Confederated Tribes of Colville Reservation
- Confederate Salish-Kootenai Tribes of the Flathead Reservation
- Confederated Tribes of the Umatilla Reservation of Oregon
- Confederated Tribes of the Warm Springs Reservation of Oregon
- Confederated Tribes and Bands of the Yakama Indian Nation
- Kalispel Indian Community
- Kootenai Tribe of Idaho
- Nez Pierce Tribe of Idaho
- Northwestern Band of the Shoshone Nation
- Shoshone-Paiute Tribes of the Duck Valley Reservation
- Shoshone-Bannock Tribes of the Fort Hall Reservation
- Spokane Tribe of Indians