Gavins Point Dam

Gavins Point Dam
Gavins Point Dam on the Missouri River, impounding Lewis and Clark Lake.
Gavins Point Dam is located in USA Midwest
Gavins Point Dam
Location of Gavins Point Dam in the Midwestern United States.
Gavins Point Dam is located in the United States
Gavins Point Dam
Gavins Point Dam (the United States)
CountryUnited States
LocationCedar County, Nebraska and Yankton County, South Dakota.
Coordinates42°50′58″N 97°28′55″W / 42.849382°N 97.482018°W / 42.849382; -97.482018
StatusOperational
Construction began1952; 72 years ago (1952)
Opening date1957; 67 years ago (1957)
Construction cost$51 million
Owner(s) U.S. Army Corps of Engineers, Omaha District
Dam and spillways
Type of damEmbankment, rolled-earth and chalk-fill
ImpoundsMissouri River
Height74 ft (23 m)
Length8,700 ft (2,652 m)
Width (crest)35 ft (11 m)
Width (base)850 ft (259 m)
Dam volume7,000,000 cu yd (5,351,884 m3)
Reservoir
CreatesLewis and Clark Lake
Total capacity492,000 acre⋅ft (606,873,064 m3)
Catchment area279,480 sq mi (723,850 km2)
Surface area31,400 acres (12,700 ha)
Maximum length25 mi (40 km)
Maximum water depth45 ft (14 m)
Normal elevation1,210 feet msl
Power Station
Operator(s)U.S. Army Corps of Engineers (Operator);
Western Area Power Administration (marketer)
Commission date1957
Turbines3 x 44 MW
Installed capacity132 MW
Annual generation727 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.

  1. ^ "Summary of Engineering Data – Missouri River Main Stem System" (PDF). Missouri River Division. U.S. Army Corps of Engineers. August 2010. Archived from the original (PDF) on February 7, 2012. Retrieved August 17, 2012.