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Grand Coulee Dam, Washington

Washington Projects

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, WashingtonAlthough 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  

Dawn Wiedmeier
Area Manager
(509) 575-5848 ext. 200

Columbia-Cascades Area Office
1917 Marsh Road
Yakima, WA 98901-2058

Coleman Smith
Power Manager
(509) 633-9507

Grand Coulee Power Office

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

Yakima Field Office
1910 Marsh Road
Yakima, WA 98901-2058
Boris Belchoff
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 Update: March 10, 2015 3:05 PM