Largest tributaries
The Charleston Harbor is an inlet (8 sq mi/20.7 km2) of the Atlantic Ocean at Charleston, South Carolina.
The inlet is formed by the junction of Ashley and Cooper rivers. Charleston Harbor forms part of the Intracoastal Waterway.
Charleston Harbor might be considered as an estuary, where freshwater from rivers Ashley, Cooper, and Wando mixes with saltwater from the Atlantic Ocean.
