Cochrane Dam is a run-of-the river

Run-of-the-river hydroelectricity

Run-of-the-river hydroelectricity is a type of hydroelectric generation whereby a considerably smaller water storage called pondage or none is used to supply a power station. Run-of-the-river power plants are classified as with or without pondage...

 hydroelectric dam on the Missouri River

Missouri River

The Missouri River flows through the central United States, and is a tributary of the Mississippi River. It is the longest river in North America and drains the third largest area, though only the thirteenth largest by discharge. The Missouri's watershed encompasses most of the American Great...

, about 8 miles (12.9 km) northeast of Great Falls

Great Falls, Montana

Great Falls is a city in and the county seat of Cascade County, Montana, United States. The population was 58,505 at the 2010 census. It is the principal city of the Great Falls, Montana Metropolitan Statistical Area, which encompasses all of Cascade County...

 in the U.S.

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 state 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,...

. The dam has a concrete gravity design and is 59 feet (18 m) high and 753 feet (229.5 m) long. Its power station has two generators capable of producing 64 megawatts. Construction of the dam was finished in 1958.