The Chattooga River (also spelled Chatooga, Chatuga, and Chautaga, variant name Guinekelokee River) is the main tributary of the Tugaloo River. Its headwaters are located southwest of Cashiers, North Carolina, and it stretches 57 miles (92 km) to where it has its confluence with the Tallulah River within Lake Tugalo, held back by the Tugalo Dam. The Chattooga and the Tallulah combine to make the Tugaloo River starting at the outlet of Lake Tugalo. The Chattooga begins in southern Jackson County, North Carolina, then flows southwestward between northwestern Oconee County, South Carolina, and eastern Rabun County, Georgia.