Savannah River

Savannah River, river forming the Georgia-South Carolina border, arising from the confluence of the Tugaloo and Seneca rivers and flowing southeast into the Atlantic Ocean. The 314-mi (505-km) river is used for flood control and hydroelectric power. It is navigable by oceangoing vessels for about 23 mi (37 km) and by smaller vessels for about 230 mi (370 km), as far as Augusta, Ga.