Washington Projects

View of Grand Coulee Dam from John W. Keys Pump Generating Plant

The centerpiece of the Columbia Basin Project is Grand Coulee Dam which, in addition to providing storage water for irrigation, is one of the world's largest hydroelectric powerplants. Grand Coulee Dam also provides flood control, recreation, and benefits for fish and wildlife.

All other activities in Washington are administered through the Columbia-Cascades Area Office.


Cle Elum Dam

Although Washington has abundant annual precipitation compared to other Western states, most of it occurs during the winter. Water demand is greatest, however, during the summer growing season when rainfall is infrequent east of the Cascade Range.

Summertime water shortages and winter floods have plagued Washingtonians since settlers first arrived in the Columbia River Basin in the early 1840s. To combat the dry growing season conditions, settlers employed primitive irrigation techniques to bring water to thirsty croplands. Because these techniques resulted in lowering river levels, diversion facilities could no longer be used. This left Washington settlers with the same water shortage.

Following the creation of the Reclamation Service in 1902, construction began on Washington's first Reclamation constructed irrigation project. The Okanagan Project, begun in 1905, brought water to thousands of acres of croplands.

Construction began on Grand Coulee Dam in 1935 and was the first feature of the Columbia Basin Project to utilize the irrigation and hydropower potential of the Columbia River. Other projects developed by Reclamation, notably in the Yakima Valley, contributed to modern-day Washington's reputation as the ’fruitbowl’ of the nation.

Project Dam Powerplant
Columbia Basin Project Dry Falls Dam  
Grand Coulee Dam Grand Coulee Powerplant
North Dam  
O'Sullivan Dam
  Pinto Dam
Okanogan Project Conconully Dam  
  Salmon Lake Dam  
Spokane Valley Project  
Yakima Project Bumping Lake Dam  
Chandler Powerplant
  Cle Elum Dam  
Clear Creek Dam  
Easton Diversion Dam
French Canyon Dam  
Kachess Dam  
Roza Diversion Dam Roza Powerplant
  Tieton Dam
Columbia-Cascades Area    
Dawn Wiedmeier
Area Manager
(509) 575-5848 ext. 200

Columbia-Cascades Area Office
1917 Marsh Road
Yakima, Washington 98901-2058
Coleman Smith
Power Manager
(509) 633-9507

Grand Coulee Power Office
PO Box 620
Grand Coulee, WA 99133-0620
Chad Stuart
Field Office Manager
(509) 575-5848 ext. 213

Yakima Field Office
1910 Marsh Road
Yakima, WA 98901-2058
Field Office Manager
(509) 754-0261

Ephrata Field Office
PO Box 815
Ephrata WA, 98823

Related Links
Grand Coulee Dam
Yakima River Basin Water Operations
Washington Projects and Facilities
Washington Recreation
Tributary Habitat Program
Federal Columbia River Power System (FCRPS)
Columbia Basin Farm Unit Maps
Banks Lake Resource Management Plan
Potholes RMP
Yakima Integrated Water Resource Management Plan

Last Updated: 7/15/15