Lake Keowee

Lake Keowee
Company type	Artificial reservoir
Industry	Energy, Recreation
Founded	1971
Headquarters	Oconee County, United States
Area served	South Carolina
Products	Hydroelectric power, Cooling water for nuclear reactors, Recreational activities
Owner	Duke Energy

Lake Keowee is an artificial reservoir situated in South Carolina, created mainly to provide support for the power utility Duke Energy and to offer public recreational opportunities. It extends roughly in length and in width, with an average depth of and a shoreline measuring about . The lake is positioned approximately above sea level.

The construction of the lake commenced in 1971 with the establishment of two primary dams—Keowee Dam and Little River Dam—spanning . This reservoir collects water from the Keowee River, Little River, among others. The combined outflows form the Seneca River, which subsequently feeds into the larger Savannah River.

Lake Keowee serves as a cooling source for Duke Energy’s trio of nuclear reactors at the Oconee Nuclear Generating Station. Additionally, the dams contribute to hydroelectric power generation, with the Keowee Hydro Station producing 158 megawatts from the lake’s discharge. Beyond its role in energy, the lake is a vital recreational destination favored for fishing, boating, swimming, sailing, and kayaking, renowned for its pristine water quality.

The term Keowee (ᎨᎣᏫ) originates from the Cherokee language, meaning "place of the mulberries." The historic Cherokee town of Keowee, once the largest among the seven Lower Towns during colonial times, was situated along the Keowee River but was submerged following reservoir creation. Prior to construction, archaeological investigations revealed numerous artifacts and burial grounds at this site.

History

This region has been inhabited for centuries by Creek Confederacy tribes and, to a lesser extent, by the Cherokees.

In 1753, Anglo-European settlers erected Fort Prince George near Keowee. In retaliation for Cherokee attacks, British forces destroyed Keowee in 1760. During the American Revolutionary War, most Cherokee allied with the British in an effort to drive out American settlers. Following defeats such as at Sullivan's Island in 1776, Cherokee resistance diminished.

Colonel Andrew Williamson commanded Continental and militia troops against Cherokee forces in the Carolina highlands and northeastern Georgia, leading to peace negotiations. The Treaty of Dewitt's Corner (1777) established a new boundary along the Oconee Mountains, with the Cherokee relinquishing most lands now comprising Oconee, Pickens, Anderson, and Greenville counties.

Later agreements like the Hopewell Treaty (1785) confirmed boundaries and hunting privileges. By the 1816 treaty of Washington, Cherokee lands were sold for $5,000 as they moved further west and south into Georgia. The northern border near present-day Lake Keowee remained undisputed afterward. Nevertheless, the Indian Removal Act of 1830 compelled most Cherokee to leave the Southeast; approximately 4,000 perished during the Trail of Tears journey to Indian Territory (now Oklahoma).

Late 20th century to present

Beginning in 1963, South Carolina Land & Timber initiated land acquisitions along the Keowee River aimed at development. Duke Power Company purchased 83,400 acres from both the Singer Corporation and private owners. In the mid-1960s, Duke Power planned to meet rising electricity demands in the Southeast by constructing artificial lakes and hydroelectric facilities inspired by projects like those of the Tennessee Valley Authority.

On January 2, 1965, Duke Energy president W. B. McGuire unveiled plans for the $700 million Keowee-Toxaway initiative. Two days later, Duke filed applications for construction permits. The project necessitated flooding areas rich in historical significance; archaeologists from the University of South Carolina conducted excavations at sites including colonial forts and Cherokee settlements, uncovering thousands of artifacts.

Construction entailed significant land clearing and earthmoving operations beginning in 1967 by companies such as Jeff Hunt Machinery Company, Blythe Brothers, and Clement Brothers. The initial phase involved creating Lake Keowee by damming both the Keowee and Little rivers; concurrently Lake Jocassee was formed by damming the Jocassee River. This phase's cost was about $83 million. At a groundbreaking ceremony in April 1967, South Carolina governor Robert McNair symbolically launched construction with a dynamite blast.

Of the three dams constructed, the Keowee River dam was longest at , with a base width of , tapering to at its summit. It stands taller than Little River dam but is shorter than Jocassee dam. Both reservoirs receive inflows from Whitewater, Thompson, and Toxaway rivers; Lake Jocassee’s hydroelectric station also channels water into Lake Keowee. Water transfer began in December 1973; commercial operations commenced on December 19, 1973.

Lake Keowee includes notable shoreline features such as a life-sized Bob's Big Boy Burger statue located at its southern tip—a favored location during national competitive fishing events.

Power generation

The Keowee Dam houses two hydroelectric generators with a total output of 40 megawatts, capable of supplying electricity to roughly 7,000 households. An 800-foot tunnel, measuring 33.5 feet in width, facilitates water conveyance for the facility, accommodating an average flow rate of 1,000 cubic feet per second.

To ensure effective cooling of the nuclear reactors, Duke Energy installed the Oconee skimmer wall, which draws cold water from a depth of 150 feet within the lake. This system is designed to maintain dependable cooling during drought conditions while preventing sediment and debris from entering the intake valves. The closure of Keowee Dam gates on April 2, 1970, initiated the filling of the lake to a depth of 150 feet. The hydroelectric plant commenced commercial operations on April 17, 1971.

Located about eight miles from Salem and Seneca in South Carolina, Duke Energy’s Oconee Nuclear Station began functioning in 1973. It has produced over 500 million megawatt-hours of power, marking it as the first nuclear facility in the United States to reach this achievement. The plant’s estimated generation capacity stands at approximately 2.6 million kilowatts, enough to supply energy to nearly 1.9 million residences.

In 1996, the Nuclear Regulatory Commission (NRC) identified improper refueling practices at Oconee and other nuclear sites nationwide. After NRC investigations, Duke Energy implemented corrective measures that enhanced the plant’s cooling capabilities. The NRC extended Oconee’s operating license by an additional two decades in 2011.

Politics

As both the developer and operator of the lake, Duke Energy wields considerable control over its management, including oversight of dams, the lake itself, and adjacent shorelines up to a designated elevation level. The company also regulates docks and retaining walls, requiring written approval for significant construction projects around the lake. The Federal Energy Regulatory Commission supervises Duke’s operations to guarantee public access, a stipulation tied to the original project permits. Duke Energy remains the largest taxpayer within Oconee County.

The utility partners with various state and federal entities such as the United States Army Corps of Engineers to coordinate lake level management and infrastructure adaptability. It supports environmental cleanup efforts and commissions research on recreational impacts to uphold ecological standards.

In 1993, local residents established the Friends Of Lake Keowee Society (FOLKS) to champion environmental preservation and recreational interests. FOLKS actively monitors water quality, advocates for litter reduction through initiatives like "Island Keeper," and opposes developments perceived as detrimental to the lake’s natural character. For instance, in 2011, FOLKS contested plans for a multi-use marina that included amenities such as a restaurant, lodge, and fueling station.

FOLKS and other stakeholders express concerns about potential overdevelopment issues including overcrowding, light and noise pollution, and stormwater runoff impacts. They estimate approximately 10,000 developable waterfront parcels exist around the lake, with more than 80 lots exceeding ten acres each.

Local government officials also play a role in development oversight; for example, they objected to a proposed twelve-story condominium project due to worries about its effect on the lake’s visual landscape.

Geography and climate

Situated mainly within Oconee County, South Carolina, Lake Keowee lies close to the Blue Ridge Mountains, with a portion extending into adjacent Pickens County. The lake is positioned within several hundred miles of major southeastern urban centers, including Charleston (250 miles), Columbia (136 miles), Greenville (35 miles), Charlotte (127 miles), Raleigh-Durham (269 miles), Atlanta (145 miles), Augusta (135 miles), and Savannah (247 miles). The climate in this area is characterized by mild winters and moderate summer temperatures.

Recreation

Public parks. At the northern shore of the lake, Keowee-Toxaway State Park was created through collaboration between Duke Energy and the state of South Carolina. This park system comprises three distinct areas: Mile Creek Park (155 acres), South Cove Park (40 acres), and High Falls Park (44 acres). Additionally, Eastotoe Park, covering 373 acres, is preserved as a wildlife sanctuary under the management of the South Carolina Department of Natural Resources. Duke Energy has also developed six boat access points. Certain islands within the lake permit daytime visitation; however, activities such as overnight camping, open fires, littering, construction of permanent structures, and removal of vegetation are strictly prohibited.

Boating. The lake offers boating opportunities supported by marina facilities catering to residents. Noteworthy incidents include a jet ski accident involving a Clemson University football player and other boat-related collisions. To enhance environmental protection and safeguard the shoreline, Pickens County allocated $135,000 to install a floating restroom facility for boaters.

Water sports. Lake Keowee serves as a favored location for waterskiing along with various other water-based recreational activities.

Fishing. Anglers can find a variety of fish species in the lake, such as largemouth bass, smallmouth bass, spotted bass, crappie, bluegill, yellow perch, catfish, brown trout, and rainbow trout.

Swimming. The lake is suitable for swimming; however, there have been occasional fatal incidents often involving individuals who are not proficient swimmers entering deep water or encountering submerged currents.

Physical features

Area. Covering roughly , Lake Keowee boasts approximately 300 miles of shoreline. Positioned at an elevation near 800 feet above sea level, the lake extends 23 miles in length and reaches up to 3 miles in width at its broadest section. Its average depth measures around 54 feet.
Drinking water. The lake functions as a source of potable water for Greenville, Seneca, and neighboring communities.
Cleanliness. Renowned for its high water quality, one residential area—Keowee Key—discharges treated wastewater into the lake under stringent regulations enforced by the South Carolina Department of Health and Environmental Control. Other developments employ alternative wastewater management techniques such as drip dispersal systems or advanced filtration processes.

Real estate

Since the 1970s, Lake Keowee has attracted numerous real estate developments offering diverse amenities. A private developer in cooperation with Pickens County officials is constructing a multi-purpose recreational complex that includes cabins, boating facilities, dining establishments, RV parking spaces, campgrounds, fishing piers, a designated swimming beach, and boat docks. More than 110 residential communities have been established along the shoreline featuring approximately 10,000 buildable lots and around 2,000 homes—many of which are multi-story luxury residences.

One particular development features an extensive dog park, pet-friendly walking trails, open green areas, and significant shoreline accessibility. The region is increasingly popular among retirees and those seeking weekend retreats. Developers have made substantial investments in environmental conservation; for instance, The Cliffs at Keowee Falls imported nearly 5,000 large boulders to reinforce creek banks against erosion.

Among the amenities is a mountain-top golf course—the only one of its kind in South Carolina—adding to the area's desirability. Fire protection services are provided by the Keowee Fire Department with assistance from neighboring units when necessary. Approval for new developments requires comprehensive authorization from Duke Energy, local community members, the Federal Energy Regulatory Commission, various state agencies, and the Eastern Band of Cherokee Indians.

Vacation residences

Properties surrounding the lake are popular among retirees and outdoor lovers, with many homeowners possessing boats. Boating activity tends to increase on summer weekends compared to weekdays. One occupant mentioned that the residence mainly functions as a venue for family reunions, hosting occasions such as anniversaries and forthcoming wedding celebrations, with frequent visits during summer weekends. Popular water activities include water-skiing and wakeboarding.

Prominent individuals residing here include David Cerullo, CEO of the INSP network, who constructed a 9,000-square-foot house with views of the lake. Furthermore, a charitable organization acquired a home for a wounded Marine, demonstrating community-driven support efforts.

Other

Education. The vicinity around the lake features multiple academic institutions, such as Clemson University, Tri-County Technical College, and Anderson University.

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