Oahe Dam

Oahe Dam

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The Oahe Dam is a major unit of the Missouri River basin project. It is 74 m (242 feet) high and 2853 m (9,360 feet) wide. The dam sits on the Missouri River, in central South Dakota, not far from the state capital of Pierre. The Oahe Dam was built between 1948 and 1963 by the U.S. Corps of Engineers. The reservoir impounded by the dam extends some 400 km (250 miles) upstream and has one of the largest reservoir capacities in the United States. The dam provides hydroelectric power, flood control, improvement of navigation and irrigation.

The Oahe Dam is 2035 km northwest of Washington D.C.


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