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It is located about 80 km (50 mi) from Bismarck, North Dakota; the distance by the river is about 120 km (75 mi). Lake Sakakawea marks the maximum southwest extent of glaciation during the ice age.
The reservoir was created with the completion of Garrison Dam in 1956, the second (and largest) of six main-stem dams on the Missouri River built and managed by the U.S. Army Corps of Engineers for flood control, hydroelectric power, navigation and irrigation. (The other five are Fort Peck, Oahe, Big Bend, Fort Randall and Gavins Point.)
HydropowerHydropower (or waterpower harnesses the energy of moving or falling water. This is usually in the form of hydroelectricity from a dam, but it can be used directly as a mechanical force. The term refers to a number of systems in which flowing water drives turbines at Garrison Dam have a generating capacity of 515 MegawattThe megawatt (symbol: MW) is a unit for measuring power corresponding to one million (106) watts. The productive capacity of electrical generators operated by utility companies are often measured in MW. Few things can sustain the transfer or consumption os of electricity. Their average production is 240 Megawatts, enough for several hundred thousand people.The Garrison Dam National Fish Hatchery is the world's largest walleyeA New World relative of the European pikeperch, the walleye or yellow pike Sander vitreus formerly Stizostedion vitreum is a freshwater perciform fish native to most of Canada and the northern United States; it is believed to be an introduced species in t and northern pike producing facility and also works to restore endangered species, such as the pallid sturgeonSturgeon (Acipenser) is the name given to a small group of fishes, of which some twenty different species are known †, from European, Asiatic and North American rivers. They pass a great part of the year in the sea, but periodically ascend large ri.
The dam is between RiverdaleRiverdale is a city located in McLean County, North Dakota. As of the 2000 census, the city had a total population of 273. Geography Riverdale is located at 47°29'59" North, 101°22'12" West (47. 499853, -101. According to the United States Census Bureau, and Pick CityPick City is a city located in Mercer County, North Dakota. As of the 2000 census, the city had a total population of 166. Geography Pick City is located at 47°30'43" North, 101°27'24" West (47. 511901, -101. According to the United States Census Bureau,, North Dakota. Garrison, North Dakota is named after the dam. The creation of the lake displaced members of the Fort Berthold Indian Reservation , forcing the creation of New Town.