What follows is a list of the fourteen reservoirs in the state of Washington, the United States, that contain at least 250,000 acre feet when at full capacity. In addition to in-stream reservoirs, the list includes enhanced natural lakes, such as Lake Chelan.

Key
† denotes reservoir not entirely in Washington

List edit

Name County(s) Coordinates Volume[n 1] (acre feet) Volume (km3) Surface area [n 2] Elevation[n 3] Inflow Dam Image
Franklin D. Roosevelt Lake Ferry, Stevens, Lincoln, Okanogan,Grant 9,562,000 11.7945 82,300 1,290[1] Columbia River Grand Coulee Dam  
Lake Umatilla Multnomah†, Hood River†, Wasco†, Skamania, Klickitat 2,530,000 3.1207 52,000 268[2] Columbia River John Day Dam  
Riffe Lake Lewis 1,790,000 2.2079 11,830 778[3] Cowlitz River Mossyrock Dam  
Ross Lake Whatcom 1,452,750 1.7920 11,678 1,602[4] Skagit River Ross Dam  
Lake Wallula Benton, Franklin, Walla Walla, Umatilla 1,350,000 1.6652 38,000 357[5] Columbia River McNary Dam  
Banks Lake Grant, Douglas 1,275,000 1.5727 27,000 1,570[6] Columbia Basin Project Dry Falls Dam  
Lake Chelan[n 4] Chelan 1,059,350 1.3067 33,000 1,100[7] Stehekin River Lake Chelan Dam  
Lake Wanapum Kittitas, Grant, Douglas, Chelan 796,000 0.9819 14,720 Columbia River Wanapum Dam  
Swift Reservoir Skamania 756,000 0.9325 4,620 1,012[8] Lewis River Swift Dam  
Lake Bryan Columbia, Whitman 565,200 0.6972 10,025 Columbia River Little Goose Dam  
Lake Bonneville Multnomah†, Hood River 537,000 0.6624 20,200 Columbia River Bonneville Dam
Lower Granite Lake Garfield, Whitman 485,000 0.5982 8,900 Snake River Lower Granite Dam  
Lake Cushman Mason 473,400 0.5839 4,010 North Fork Skokomish River Cushman Dam No. 1  
Lake Washington King 458,000 0.5650 25,000 Sammamish River Hiram M. Chittenden Locks  
Rock Island Pool Chelan, Douglas 131,000 0.1616 3,320 Columbia River Chief Joseph Dam  

See also edit

Notes edit

  1. ^ When available, volume given is the maximum flood pool, not the operational or live storage capacity.
  2. ^ Surface area given in acres.
  3. ^ Elevation given is the elevation of reservoir at full pool, measured in feet.
  4. ^ Natural lake raised by dam.

References edit

  1. ^ "Lake Roosevelt Water Level". United States Bureau of Reclamation. 2017-01-10. Retrieved 2017-01-18.
  2. ^ "John Day Dam and Lake Umatilla". United State Army Corps of Engineers. Retrieved 2017-01-18.
  3. ^ "River Flows and Lake Levels". Tacoma Public Utilities. Retrieved 2017-01-18.
  4. ^ "Lake and River Conditions". National Park Service. Retrieved 2017-01-18.
  5. ^ "McNary Dam and Lake Wallula". United States Army Corps of Engineers. Retrieved 2017-01-18.
  6. ^ "Banks Lake Drawdown: Final Environmental Impact Statement" (PDF). United States Bureau of Reclamation. May 2004. Retrieved 2017-01-18.
  7. ^ "Morphology of Lake Chelan" (PDF). Washington State Department of Ecology. January 1987. Retrieved 2017-01-18.
  8. ^ "Swift Reservoir". Washington Department of Fish & Wildlife. Retrieved 2017-01-08.