Lake Jocassee - Hydrology

Hydrology

A confluence of four rivers supplies Lake Jocassee's water. The farthest west of the rivers, the Whitewater River, flows southeast until it meets the northwest corner of Lake Jocassee. The Thompson River flows due south until it too reaches the lake in the northwest corner. The Horsepasture River feeds the lake from the northeast corner, along with the Toxaway River, which is directly east of the Horsepasture River.

The Jocassee Hydro Station, located in the southeast corner of Lake Jocassee, separates it from the beginning of Lake Keowee, also known as the Keowee River. Lake Keowee's furthest extent to the south brings it close to the city of Seneca, with the old mill town of Newry actually on it. Unlike Lake Jocassee, Keowee is heavily settled, primarily because most of the land,but not all, adjacent to Lake Jocassee is owned by Duke Power and the State of South Carolina.