South聽Carolina River Map showing major rivers in South聽Carolina, River start and end point, county boundaries.
River Map of South聽Carolina State
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Rivers and Waterways in South Carolina
South Carolina鈥檚 river systems flow from the Appalachian foothills through the Piedmont and into the coastal plains, draining into the Atlantic Ocean. Many rivers begin in the northwest and move southeast, forming wide floodplains and estuaries near the coast. The state features a mix of fast-moving upland rivers and slower coastal waterways. Reservoirs and lakes are common, especially in the upper regions, supporting hydropower, water supply, agriculture, and recreation across South Carolina.
Major Rivers in South Carolina
| River | Length (Approx.) | Region | Flows Into |
|---|---|---|---|
| Savannah River | 301 mi | West | Atlantic Ocean |
| Pee Dee River | 232 mi | Northeast | Atlantic Ocean |
| Santee River | 143 mi | Central | Atlantic Ocean |
| Edisto River | 206 mi | South | Atlantic Ocean |
| Saluda River | 200 mi | West | Santee River |
| Broad River | 150 mi | Central | Santee River |
| Catawba River | 220 mi | North | Wateree River |
| Wateree River | 75 mi | Central | Santee River |
| Congaree River | 53 mi | Central | Santee River |
| Waccamaw River | 140 mi | East | Atlantic Ocean |
| Lynches River | 140 mi | Northeast | Pee Dee River |
| Little Pee Dee River | 116 mi | Northeast | Pee Dee River |
| Black River | 151 mi | East | Pee Dee River |
| Cooper River | 50 mi | Central | Atlantic Ocean |
| Ashley River | 25 mi | Central | Atlantic Ocean |
| Combahee River | 40 mi | South | Atlantic Ocean |
| Great Pee Dee River | 232 mi | Northeast | Atlantic Ocean |
| Chattooga River | 57 mi | Northwest | Savannah River |
Major Lakes in South Carolina
| Lake | Type | Region |
|---|---|---|
| Lake Marion | Reservoir | Central |
| Lake Moultrie | Reservoir | Central |
| Lake Murray | Reservoir | Central |
| Lake Hartwell | Reservoir | Northwest |
| Lake Keowee | Reservoir | Northwest |
| Lake Wylie | Reservoir | North |
| Lake Greenwood | Reservoir | West |
| Lake Jocassee | Reservoir | Northwest |
| Lake Wateree | Reservoir | Central |
| Lake Thurmond | Reservoir | West |
Major River Basins in South Carolina
South Carolina鈥檚 river basins flow primarily into the Atlantic Ocean, with major systems combining multiple rivers into larger coastal waterways. These basins are important for water supply, agriculture, and coastal ecosystems.
- Savannah River Basin
- Santee River Basin
- Pee Dee River Basin
- Edisto River Basin
- Waccamaw River Basin
- Cooper River Basin
- Ashley River Basin
- Combahee River Basin
- Lynches River Basin
South Carolina Rivers Facts
| State | South Carolina |
| Total Rivers & Streams | 50,000+ miles of streams |
| Major Rivers | Savannah, Pee Dee, Santee, Edisto |
| Total Waterway Length | 55,000+ miles |
| Main Drainage | Atlantic Ocean |
| Longest River | Savannah River |
| Shortest River | Ashley River |
| Major River Basins | 9 Primary Basins |
| Primary Outlet | Atlantic Ocean |
| Key Uses | Hydropower, water supply, agriculture, recreation |
| Longest River Within State | Edisto River |
| Number of River Basins | 8鈥�10 Basins |
| Major Reservoirs | Lake Marion, Lake Murray, Lake Hartwell |
| Primary Water Source | Surface water and reservoirs |
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