Clarks Hill Reservoir

Clarks Hill Reservoir
CC BY-SA 3.0 · source
Name	Clarks Hill Reservoir
Other name	Lake Strom Thurmond
Location	McCormick County, Georgia; Lincoln County, Georgia; Columbia County, Georgia; McDuffie County, Georgia; Burke County, Georgia; Richmond County, Georgia; Aiken County, South Carolina; Lincoln County, South Carolina; McCormick County, South Carolina
Type	reservoir
Inflow	Savannah River
Outflow	Savannah River
Basin countries	United States
Area	71,000 acres
Created	1954–1958
Volume	2.6e6 acre-feet
Operator	United States Army Corps of Engineers

Clarks Hill Reservoir is a large multipurpose reservoir on the Savannah River straddling the border of Georgia and South Carolina. Completed in the 1950s by the United States Army Corps of Engineers, the impoundment created extensive navigation, hydroelectric, flood control, and recreational resources that have influenced regional development across Augusta–Aiken metropolitan areas. The reservoir, also known as Lake Strom Thurmond, lies near several historic sites, transportation corridors, and conservation areas.

History

Construction was authorized under legislation influenced by post‑World War II river development initiatives tied to agencies such as the Tennessee Valley Authority model and debates in the United States Congress about inland navigation and hydroelectric power. The project was designed by the United States Army Corps of Engineers and named in honor of Strom Thurmond, a longtime United States Senator; local opposition and federal deliberations involved representatives from affected counties including McCormick County and Lincoln County. Land acquisition and relocation intersected with issues addressed by the Federal-Aid Highway Act of 1956 and regional planners from institutions such as the Georgia Department of Natural Resources and the South Carolina Department of Natural Resources. During construction, engineering firms and contractors worked alongside labor unions like the AFL–CIO and consulted with academic researchers from University of Georgia, Clemson University, and University of South Carolina on environmental and social impacts. The reservoir’s completion in the late 1950s paralleled infrastructure investments in Interstate 20, U.S. Route 278, and the expansion of Augusta National Golf Club tourism, prompting debates in state legislatures and county commissions. Historic properties affected by inundation included antebellum plantations recorded by the Historic American Buildings Survey and archaeological sites documented by the Smithsonian Institution.

Geography and Hydrology

Located at the confluence of tributaries entering the Savannah River, the lake encompasses portions of multiple watersheds studied by researchers at the United States Geological Survey, Environmental Protection Agency, and regional water authorities such as the Savannah River Basin Commission. The reservoir’s shoreline abuts municipal jurisdictions including Augusta, Aiken, Thomson, and Elberton. Hydrologic management coordinates with federal entities including the Federal Energy Regulatory Commission and state agencies like the Georgia Environmental Protection Division. Seasonal inflow variation is affected by precipitation patterns influenced by climatic systems analyzed by the National Oceanic and Atmospheric Administration and historic flood events catalogued with data from National Weather Service. Sedimentation, water quality, and nutrient loading have been topics of study by scholars at Clemson University and University of Georgia Sea Grant programs, while downstream flow regimes affect ecosystems within the Savannah National Wildlife Refuge and estuarine environments near Savannah and Hilton Head Island.

Engineering and Infrastructure

The project’s principal structure, a concrete and earthen dam equipped with hydroelectric generators, was engineered with inputs from firms formerly associated with projects like the Hoover Dam and coordinated under standards promulgated by the United States Army Corps of Engineers headquarters in Washington, D.C.. Power generation installations were sized to supply regional grids operated by utilities such as Southern Company and integrated with transmission systems managed by entities like Electric Reliability Council of Georgia. Navigation locks and pool regulation support barge traffic historically tied to commerce on the Savannah River and to inland terminals serving railroads including CSX Transportation and Norfolk Southern Railway. Ancillary infrastructure includes boat ramps, marinas, and spillway works comparable to components at Lake Lanier and Hartwell Lake, and dredging operations have involved contractors experienced with projects on the Mississippi River. Maintenance, flood-control protocols, and emergency action plans coordinate with county emergency management offices and federal agencies like the Federal Emergency Management Agency.

Ecology and Wildlife

The reservoir and associated riparian corridors support diverse assemblages documented by biologists from University of South Carolina, Augusta University, and state natural resource departments. Fish species include sportfishes similar to populations in other southeastern reservoirs studied by the American Fisheries Society; common targets include Largemouth bass, Striped bass, Blue catfish, and Crappie. Waterfowl and wading birds observed by ornithologists from organizations like the Audubon Society and the National Audubon Society frequent wetlands near the lake, while mammals such as White-tailed deer and riverine species are recorded by ecologists associated with the Southeastern Naturalist journal. Invasive species management has required coordination with the United States Fish and Wildlife Service and state agencies to address organisms comparable to Hydrilla verticillata and nonnative mollusks documented in other southern reservoirs. Conservation programs link to federal initiatives such as the North American Waterfowl Management Plan and regional land trusts including the The Nature Conservancy.

Recreation and Parks

Recreational facilities around the impoundment include state parks and Corps‑operated recreation areas that attract boating, fishing, camping, and wildlife viewing, paralleling amenities found at Lake Hartwell State Park and Clarks Hill State Park equivalents. Tourism draws visitors from metropolitan centers like Atlanta, Columbia, and Charlotte and supports events promoted through tourism bureaus associated with Visit Savannah and local chambers of commerce. Marinas and outfitter services coordinate with organizations such as the National Association of State Park Directors and regional fishing tournaments sanctioned by bodies like the Bass Anglers Sportsman Society. Trails and interpretive sites connect with historic tourism routes that include stops at Kettle Creek Battlefield‑era sites and Civil War markers catalogued by the American Battlefield Trust.

Economic and Social Impact

The reservoir has had wide-ranging economic effects on agriculture, manufacturing, energy, and recreational sectors, influencing employment patterns tracked by the Bureau of Labor Statistics and regional planning bodies such as the Savannah River Regional Development Center. Hydropower revenues and flood‑control benefits factor into cost‑benefit assessments used by the Congressional Budget Office and the Office of Management and Budget for federal projects. The lake’s creation altered land use, prompted relocation programs administered under federal statutes including those overseen by the Department of Housing and Urban Development, and affected cultural landscapes documented by scholars at Emory University and the University of Georgia. Local economies in counties such as Aiken County and McDuffie County continue to benefit from tourism, marina businesses, and improved navigation that link to broader supply chains served by ports like the Port of Savannah. Social and environmental justice considerations have been raised by community groups and civil rights organizations including NAACP branches and regional advocacy networks.

Category:Reservoirs in Georgia (U.S. state) Category:Reservoirs in South Carolina