Lake Oahe

The Lake Oahe, which is dammed by the Oahe Dam, is one of the largest dams on the Missouri River in the north of Pierre, South Dakota, USA. The lake, the 372 km along to Bismarck runs the course of the Missouri River in North Dakota is measured at the water surface is the third largest reservoir in the United States, according to the storage space ( for which there is the information 27,400 or 28 776 or is 29,093 million cubic meters ) of third or fourth largest.

The installation of a dam at this point it was decided in 1944 by the " Flood Control Act "; construction began in 1948. The dam is named for the Oahe Indian Mission, which was established in 1874 by the Sioux. The 75 m high dam was inaugurated on August 17, 1962 by John F. Kennedy. The power plant began producing electricity in 1962 and provides the states Nebraska, Minnesota, Montana, North and South Dakota current. Besides generating electricity, the lake is also used for flood control ( flood protection), irrigation and water supply. The reservoir has a storage capacity of about 29 cubic kilometers over an area of 1453 km ² and thus an average water depth of 19.8 m. The Grand River, the Moreau River and the Cheyenne River all flow one from the west into the lake.