Noxon Rapids Dam is an earthfill 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 Clark Fork

Clark Fork (river)

The Clark Fork is a river in the U.S. states of Montana and Idaho, approximately long. The largest river by volume in Montana, it drains an extensive region of the Rocky Mountains in western Montana and northern Idaho in the watershed of the Columbia River, flowing northwest through a long...

 river, in the northwest 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 Montana

Montana

Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...

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The dam is located in the far northwest of Montana near the Idaho

Idaho

Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

 border. Downriver of Noxon Rapids Dam the Clark Fork is again impounded by the Cabinet Gorge Dam

Cabinet Gorge Dam

Cabinet Gorge Dam is a concrete gravity-arch hydroelectric dam on the Clark Fork River, in the U.S. state of Idaho. The dam is located in the Idaho Panhandle, just west of the Montana border. Cabinet Gorge Reservoir extends into Montana, nearly to Noxon Rapids Dam...

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The operating capacity of Noxon Rapids Dam at full turbine flow and full pool is 466 MW.