Wana Pa Koot Koot Cooperating Group
(Bonneville, The Dalles and John Day Dams & Reservoirs)
U.S. Army Corps of Engineers, Portland District
Bonneville Power Administration
Confederated Tribes and Bands of the Yakama Nation
Confederated Tribes of the Umatilla Indian Reservation
Confederated Tribes of the Warm Springs Reservation of Oregon
Nez Perce Tribe
Oregon State Historic Preservation Office
Washington Department of Archaeology and Historic Preservation
Bureau of Indian Affairs
Columbia River Gorge National Scenic Area (U.S. Forest Service)

Payos Kuus Cuukwe Cooperating Group
(McNary, Ice Harbor, Little Goose, Lower Granite, Lower Monumental and Dworshak Dams & Reservoirs)
U.S. Army Corps of Engineers, Walla Walla District
Bonneville Power Administration
Confederated Tribes and Bands of the Yakama Nation
Confederated Tribes of the Colville Reservation
Confederated Tribes of the Umatilla Indian Reservation
Nez Perce Tribe
Wanapum Band
Idaho State Historical Society
Oregon State Historic Preservation Office
Washington Department of Archaeology and Historic Preservation

Chief Joseph Cooperating Group
(Chief Joseph Dam & Reservoir)
U.S. Army Corps of Engineers, Seattle District
Bonneville Power Administration
Confederated Tribes of the Colville Reservation
Washington Department of Archaeology and Historic Preservation

Lake Roosevelt Mainstem Cooperating Group
(Grand Coulee Dam & Reservoir)
Bureau of Reclamation
Bonneville Power Administration
Confederated Tribes of the Colville Reservation
Washington Department of Archaeology and Historic Preservation
National Park Service, Lake Roosevelt National Recreation Area
 

Lake Roosevelt Spokane Arm Cooperating Group
(Grand Coulee Dam & Reservoir)
Bureau of Reclamation
Bonneville Power Administration
Spokane Tribe of Indians
Washington Department of Archaeology and Historic Preservation
National Park Service, Lake Roosevelt National Recreation Area

Albeni Falls Cooperating Group
(Albeni Falls Dam & Reservoir)
U.S. Army Corps of Engineers, Seattle District
Bonneville Power Administration
Coeur d'Alene Tribe
Confederated Salish and Kootenai Tribes
Kalispel Tribe
Kootenai Tribe of Idaho
Idaho State Historical Society
Idaho Panhandle National Forest

Libby Cooperating Group
(Libby Dam & Reservoir)
U.S. Army Corps of Engineers, Seattle District
Bonneville Power Administration
Confederated Salish and Kootenai Tribes
Montana State Historic Preservation Office
Kootenai National Forest

Hungry Horse Cooperating Group
(Hungry Horse Dam & Reservoir)
Bureau of Reclamation
Bonneville Power Administration
Confederated Salish and Kootenai Tribes
Montana State Historic Preservation Office
Flathead National Forest