 |
| 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.  Gavins Point Dam (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 |
| Status | Operational |
| Construction began | 1952 |
| Opening date | 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.
- ^ "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.