Name | Capacity (MW) | Location | River | Status | PS | Operator | Ref |
Bonneville Dam | 1,093 | Skamania County, Washington (also OR) | Columbia River | Operational | No | United States Army Corps of Engineers | |
Boundary Dam | 1,024 | Metaline Falls, Washington | Pend Oreille River | Operational | No | Seattle City Light | |
Box Canyon Dam |
90 |
Ione, Washington |
Pend Oreille River |
Operational |
No |
Pend Oreille PUD |
|
Chief Joseph Dam | 2,620 | Douglas and Okanogan counties, WA | Columbia River | Operational | No | United States Army Corps of Engineers | |
Diablo Dam | 159 | Whatcom County, Washington | Skagit River | Operational | No | Seattle City Light | |
Electron Hydroelectric Project | 26 | Pierce County, Washington | Puyallup River | Operational | No | Electron Hydro, LLC. | |
Gorge Dam | 199 | Whatcom County, Washington | Skagit River | Operational | No | Seattle City Light | |
Grand Coulee Dam | 6,809 | Grant and Okanogan counties | Columbia River | Operational | Yes | United States Bureau of Reclamation | |
Ice Harbor Dam | 603 | Franklin and Walla Walla counties | Snake River | Operational | No | United States Army Corps of Engineers | |
Lake Chelan Dam | 59 | Chelan, Washington | Chelan River | Operational | No | Chelan County Public Utility District | |
Little Goose Dam | 932 | Columbia and Whitman counties | Snake River | Operational | No | United States Army Corps of Engineers | |
Lower Baker Dam | 79 | Skagit County, Washington | Baker River (Washington) | Operational | No | Puget Sound Energy | |
Lower Granite Dam | 932 | Garfield and Whitman counties | Snake River | Operational | No | United States Army Corps of Engineers | |
Lower Monumental Dam | 932 | Franklin and Walla Walla counties | Snake River | Operational | No | United States Army Corps of Engineers | |
Merwin Dam | 136 | Clark and Cowlitz counties | Lewis River (Washington) | Operational | No | PacifiCorp | |
Priest Rapids Dam | 955 | Grant and Yakima counties | Columbia River | Operational | No | Grant County Public Utility District | |
Rock Island Dam | 660 | Chelan and Douglas counties | Columbia River | Operational | No | Chelan County Public Utility District | |
Rocky Reach Dam | 1,300 | Chelan and Douglas counties | Columbia River | Operational | No | Chelan County Public Utility District | |
Ross Dam | 353 | Whatcom County, Washington | Skagit River | Operational | No | Seattle City Light | |
Snoqualmie Falls Hydroelectric Plant | 54 | Snoqualmie, Washington | Snoqualmie River | Operational | No | Puget Sound Energy | |
Swift Dam | 240 | Skamania County, Washington | Lewis River (Washington) | Operational | No | PacifiCorp | |
Upper Baker Dam | 91 | Whatcom County, Washington | Baker River (Washington) | Operational | No | Puget Sound Energy | |
Wells Dam | 851 | Chelan and Douglas counties | Columbia River | Operational | No | Douglas County Public Utility District | |
Wanapum Dam | 1,038 | Grant and Kittitas counties | Columbia River | Operational | No | Grant County Public Utility District | |
Yale Dam | 134 | Clark and Cowlitz counties | Lewis River (Washington) | Operational | No | PacifiCorp | |
Cushman No. 1 Dam |
43 |
Mason County |
North Fork/ Skokomish |
Operational |
|
Tacoma Public Utilities |
|
Cushman No. 2 Dam |
81 |
Mason County |
North Fork/ Skokomish |
Operational |
|
Tacoma Public Utilities |
|
Alder Dam |
50 |
Pierce County |
Nisqually |
Operational |
|
Tacoma Public Utilities |
|
La Grande Dam |
64 |
Pierce County |
Nisqually |
Operational |
|
Tacoma Public Utilities |
|
Mayfield Dam |
162 |
Lewis County |
Cowlitz |
Operational |
|
Tacoma Public Utilities |
|
Mossyrock Dam |
300 |
Lewis County |
Cowlitz |
Operational |
|
Tacoma Public Utilities |
|
Wynoochee Dam |
12.8 |
Grays Harbor County |
Wynoochee |
Operational |
|
Tacoma Public Utilities |
|