Fort Randall Dam

Fort Randall Dam
Fort Randall Dam and Power Plant, with Lake Francis Case in the background
Fort Randall Dam is located in South Dakota
Fort Randall Dam
Location of Fort Randall Dam in the State of South Dakota
CountryUnited States
LocationGregory County and Charles Mix County, South Dakota
Coordinates43°04′00″N 98°33′14″W / 43.066722°N 98.553897°W / 43.066722; -98.553897
PurposeFlood control, hydroelectric power, irrigation, water supply, river navigation, and recreation[1]
StatusOperational
Construction began1946; 78 years ago (1946)
Opening date1953; 71 years ago (1953)
Construction cost$200 million
Owner(s) U.S. Army Corps of Engineers, Omaha District
Dam and spillways
Type of damRolled-earth fill
ImpoundsMissouri River
Height165 ft (50 m)
Length10,700 ft (3,261 m) (including spillway)
Spillways21 40-foot × 29-foot tainter gates
Reservoir
CreatesLake Francis Case
Total capacity5.418 million acre⋅ft (7 billion m3)
Catchment area14,150 sq mi (36,648 km2)
Surface area102,000 acres (41,000 ha)
Maximum length107 mi (172 km)
Maximum water depth140 ft (43 m)
Normal elevation1,350–1,375 feet msl
Power Station
Operator(s)U.S. Army Corps of Engineers
Website
U.S. Army Corps of Engineers - Fort Randall Project

Fort Randall Dam is a 2.03-mile-long (3 km) earthen dam which spans the Missouri River and impounds Lake Francis Case, the 11th-largest reservoir in the U.S.[2] The dam joins Gregory and Charles Mix counties, South Dakota, a distance of 880 river miles (1,416 km) upstream of St. Louis, Missouri, where the river joins the Mississippi River. The dam and hydroelectric power plant were constructed by and are currently[as of?] operated by the U.S. Army Corps of Engineers.

  1. ^ "Fort Randall Project Statistics".
  2. ^ "Fort Randall Project Statistics".