Lewis and Clark Lake

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Lewis and Clark Lake
Gavins Point Dam.jpg
Lewis and Clark Lake behind Gavins Point Dam
Location South Dakota / Nebraska
Coordinates 42°51′45″N 97°29′30″W / 42.8625°N 97.4917°W / 42.8625; -97.4917Coordinates: 42°51′45″N 97°29′30″W / 42.8625°N 97.4917°W / 42.8625; -97.4917
Type reservoir
Primary inflows Missouri River
Primary outflows Missouri River
Basin countries United States
Max. length 25 miles (40 km)
Surface area 31,000 acres (13,000 ha)
Max. depth 45 ft (14 m)
Water volume 492,000 acre·ft (0.607 km3)[1]

Lewis and Clark Lake is an impoundment on the Missouri River above Gavins Point Dam, near Yankton, South Dakota. It is located on the border of South Dakota and Nebraska. The reservoir is approximately 25 miles (40 km) long, with a surface area of 31,000 acres (130 km²); it has a maximum depth of 45 feet (14 m). It is the smallest of the Pick-Sloan Plan impoundments, and has been plagued with siltation problems. Lewis and Clark Lake (with Gavins Point Dam) is a very popular regional tourist destination, having hosted over one million visitors per year.

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