Lake Francis Case

Lake Francis Case
Fort Randall Dam, with Lake Francis Case in the background
Location	South Dakota
Coordinates	43°03′35″N 98°33′43″W / 43.05972°N 98.56194°W / 43.05972; -98.56194Coordinates: 43°03′35″N 98°33′43″W / 43.05972°N 98.56194°W / 43.05972; -98.56194
Type	reservoir
Primary inflows	Missouri River, White River
Primary outflows	Missouri River
Catchment area	263,480 sq mi (682,400 km2)
Basin countries	United States
Max. length	107 mi (172 km)
Surface area	102,000 acres (41,000 ha)
Max. depth	140 ft (43 m)
Water volume	5,700,000 acre·ft (7.0 km3)
Shore length1	540 mi (870 km)
Surface elevation	1,368 ft (417 m)[1]
1 Shore length is not a well-defined measure.

Lake Francis Case is a large reservoir behind Fort Randall Dam on the Missouri River in south-central South Dakota, USA. The lake has an area of 102,000 acres (410 km²) and a maximum depth of 140 ft (43 m). Lake Francis Case has a length of approximately 107 mi (172 km) and has a shoreline of 540 mi (870 km). The reservoir is named for former South Dakota Senator Francis Higbee Case.

Species of fish in the reservoir include walleye, northern pike, sauger, sunfish, yellow perch, common carp, black bullhead, channel catfish, and smallmouth bass.

The South Dakota Department of Game, Fish and Parks maintains the North Point, Pease Creek, North Wheeler, Platte Creek, Snake Creek and Buryanek Recreation Areas along Lake Francis Case.

Several major highways cross the reservoir. South Dakota Highway 44 crosses over the lake between rural Charles Mix County and Gregory County on the longest bridge in South Dakota, and Interstate 90 crosses the reservoir between Chamberlain and Oacoma.