Box Canyon Dam is a gravity-type hydroelectric

Hydroelectricity

Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy...

 dam

Dam

A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

 on the Pend Oreille River

Pend Oreille River

The Pend Oreille River is a tributary of the Columbia River, approximately long, in northern Idaho and northeastern Washington in the United States, as well as southeastern British Columbia in Canada. In its passage through British Columbia its name is spelled Pend-d'Oreille River...

, in northeast part of the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Washington.

Capacity: 69MW
Expected Production: 52MW average
Reservoir Length: 55 miles (88.5 km)
Length of Dam: 160 feet (48.8 m)
Height of Dam: 62.4 feet (19 m) to top of gates
Head Of Water: 46 feet (14 m) maximum
Type of Turbines: Kaplan
Number of Turbines: 4
Type of Dam: Concrete Gravity
Completion Date: 1956