The Savannah River is a major river in the southeastern United States, forming most of the border between the states of South Carolina and Georgia. Two tributaries, the Tugaloo River and the Chattooga River, form the northernmost part of the border. The Savannah River watershed extends into the southeastern side of the Appalachian Mountains just inside North Carolina, bounded by the Eastern Continental Divide. The river is about 350 miles long.
The river is tidal at Savannah, surprising some first-time visitors who return to downtown later in the day and find it flowing the opposite direction. Downstream, it broadens into an estuary before flowing into the ocean.
