Gavins Point Dam

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Gavins Point Dam
Gavins Point Dam on the Missouri River, impounding Lewis and Clark Lake.
Location of Gavins Point Dam in the Midwestern United States. Show map of USA Midwest Gavins Point Dam (the United States) Show map of the United States
Country	United States
Location	Cedar County, Nebraska and Yankton County, South Dakota.
Coordinates	42°50′58″N 97°28′55″W / 42.849382°N 97.482018°W / 42.849382; -97.482018
Status	Operational
Construction began	1952; 72 years ago (1952)
Opening date	1957; 67 years ago (1957)
Construction cost	$51 million
Owner(s)	U.S. Army Corps of Engineers, Omaha District
Dam and spillways
Type of dam	Embankment, rolled-earth and chalk-fill
Impounds	Missouri River
Height	74 ft (23 m)
Length	8,700 ft (2,652 m)
Width (crest)	35 ft (11 m)
Width (base)	850 ft (259 m)
Dam volume	7,000,000 cu yd (5,351,884 m3)
Reservoir
Creates	Lewis and Clark Lake
Total capacity	492,000 acre⋅ft (606,873,064 m3)
Catchment area	279,480 sq mi (723,850 km2)
Surface area	31,400 acres (12,700 ha)
Maximum length	25 mi (40 km)
Maximum water depth	45 ft (14 m)
Normal elevation	1,210 feet msl
Power Station
Operator(s)	U.S. Army Corps of Engineers (Operator); Western Area Power Administration (marketer)
Commission date	1957
Turbines	3 x 44 MW
Installed capacity	132 MW
Annual generation	727 million KWh[1]
Website U.S. Army Corps of Engineers, Gavins Point Project

Gavins Point Dam is a 1.9-mile-long (3 km) embankment rolled-earth and chalk-fill dam which spans the Missouri River and impounds Lewis and Clark Lake. The dam joins Cedar County, Nebraska with Yankton County, South Dakota a distance of 811.1 river miles (1,305 km) upstream of St. Louis, Missouri, where the river joins the Mississippi River. The dam and hydroelectric power plant were constructed as the Gavins Point Project from 1952 to 1957 by the United States Army Corps of Engineers as part of the Pick-Sloan Plan. The dam is located approximately 4 miles (6.4 km) west or upstream of Yankton, South Dakota.