Lake Sharpe

Lake Sharpe
Harry Weddington, U.S. Army Corps of Engineers · Public domain · source
Name	Lake Sharpe
Location	South Dakota, United States
Type	Reservoir
Inflow	Missouri River
Outflow	Missouri River
Basin countries	United States
Cities	Pierre, South Dakota, Fort Thompson, South Dakota

Lake Sharpe is a reservoir on the Missouri River in central South Dakota, created by the construction of a major dam project during the mid-20th century. The impoundment is associated with large federal works involving the U.S. Army Corps of Engineers, regional power generation and flood control, and has influenced transportation corridors such as U.S. Route 83 and rail lines used by BNSF Railway. The lake lies within the cultural and political landscapes shaped by the Oglala Sioux Tribe, the Crow Creek Indian Reservation, and state-level institutions in Pierre, South Dakota.

Geography

Lake Sharpe occupies a reach of the Missouri River upstream of the Fort Randall Dam and downstream of other impoundments tied to the Pick-Sloan Plan. The reservoir spans multiple counties including Sully County, South Dakota, Hughes County, South Dakota, and Spink County, South Dakota, and sits within the physiographic area influenced by the Great Plains and the Missouri Plateau. Nearby landmarks and transportation nodes include Interstate 90, the state capital Pierre, South Dakota, and the historic trail corridors associated with the Lewis and Clark Expedition. The regional climate is continental, influenced by air masses from the Great Plains and systems tracked by the National Weather Service.

History and Construction

The lake was formed following mid-century federal infrastructure initiatives tied to the Pick-Sloan Missouri Basin Program and executed by the U.S. Army Corps of Engineers under mandates in legislation such as the Flood Control Act of 1944. Construction of the associated dam involved contractors who worked alongside agencies including the Tennessee Valley Authority in planning discussions and the Bureau of Reclamation in basin-wide water policy forums. The project had direct effects on Indigenous communities such as the Crow Creek Indian Reservation and the Cheyenne River Sioux Tribe, altering land use and prompting legal and political responses in the United States Congress. Environmental policy responses from the National Park Service and advocacy from organizations like the Sierra Club emerged as the reservoir changed riparian landscapes documented by historians affiliated with Smithsonian Institution research programs.

Hydrology and Water Management

Reservoir operations are coordinated by the U.S. Army Corps of Engineers with inputs from the South Dakota Department of Game, Fish and Parks and federal entities responsible for navigation and water quality, including the Environmental Protection Agency. Flow regulation supports flood risk reduction along the Missouri River corridor affecting downstream municipalities such as Sioux City, Iowa and Omaha, Nebraska, and supports hydroelectric generation tied to regional grids managed in coordination with Western Area Power Administration. Water management strategies reflect compacts and legal frameworks involving interstate compacts recognized by the Supreme Court of the United States and include monitoring by agencies such as the United States Geological Survey and the National Oceanic and Atmospheric Administration. Seasonal reservoir level variation influences sediment transport documented in studies by universities including South Dakota State University and University of South Dakota.

Ecology and Wildlife

The impoundment reshaped habitats for species cataloged by the U.S. Fish and Wildlife Service and monitored in conservation initiatives with organizations like the Audubon Society. Aquatic fauna includes sport fish populations managed through stocking and regulation by the South Dakota Department of Game, Fish and Parks, drawing anglers targeting species similar to those in other Missouri River reservoirs. Riparian zones support migratory bird routes linked to the Central Flyway and draw birdwatchers referencing checklists maintained by the American Birding Association. Invasive species concerns parallel those addressed by the Great Lakes Aquatic Nonindigenous Species Information System and regional invasive species councils, while habitat restoration projects have involved partnerships with the National Fish and Wildlife Foundation and local conservation districts.

Recreation and Tourism

Recreational uses are promoted by state and local tourism bureaus including South Dakota Department of Tourism and municipal offices in Pierre, South Dakota. Activities include boating on the reservoir, angling consistent with regulations issued by the South Dakota Department of Game, Fish and Parks, camping in areas administered by the U.S. Army Corps of Engineers, and heritage tourism linked to interpretive sites about the Lewis and Clark Expedition and Plains Indigenous histories featured by institutions such as the Smithsonian Institution and regional museums. Events and festivals in nearby communities, coordinated with chambers of commerce like the one in Pierre, South Dakota, stimulate local hospitality sectors drawing visitors from metropolitan areas including Sioux Falls, South Dakota and Minneapolis, Minnesota.

Surrounding Communities and Economy

Communities along the reservoir include the city of Pierre, South Dakota, tribal communities such as those on the Crow Creek Indian Reservation, and small towns connected to agricultural markets served by transport networks operated by companies like Union Pacific Railroad and BNSF Railway. Local economies are based on a mix of agriculture tied to commodity markets monitored by the United States Department of Agriculture, tourism promoted by the South Dakota Department of Tourism, and energy production integrated into regional systems overseen by entities such as the Western Area Power Administration. Socioeconomic impacts from the reservoir’s creation and operations have been addressed in policy discussions in the United States Congress and studied by researchers at institutions including South Dakota State University and University of South Dakota.

Category:Lakes of South Dakota