In 1963, Duke Power Company purchased a combined 83,400 acres of land from the Singer Corporation and private landowners.
The Keowee Toxaway Project began in 1967 to construct 18,500-acre Lake Keowee and 7,500-acre Lake Jocassee from the Whitewater, Thompson, and Toxaway Rivers. Today, Lake Jocassee is still managed by Duke Energy providing electricity and recreation for the Upstate. Through a corporate-state partnership, Devils Fork State Park was developed and is managed by the South Carolina Department of Parks, Recreation and Tourism.
Lake Jocassee (pronounced "joe-kas-ee") is located in Oconee County and Pickens County.