South Carolina’s Rivers: 51 Major Waterways Shaping the Palmetto State

South Carolina has ~51 named major rivers (USGS/SCDNR), draining four primary basins:

Major Rivers by Basin

• Savannah River Basin (western border): Savannah, Tugaloo, Seneca, Chattooga (Wild & Scenic).
• Santee Basin (central): Catawba → Wateree → Santee; Congaree (Saluda + Broad); Lynches, Black, Pee Dee (Yadkin→Pee Dee→Winyah Bay).
• Pee Dee Basin (northeast): Pee Dee, Little Pee Dee, Lumber, Waccamaw.
• Coastal Plain Rivers (direct to Atlantic): Edisto, Ashepoo, Combahee (ACE Basin), Coosawhatchie, May.

Notable Mention

Congaree River – Flows through Congaree National Park (old-growth bottomland hardwood). Saluda River – Trout fishery below Lake Murray dam. Edisto – Longest free-flowing blackwater river in US.

Ecological role: 3,000+ miles of streams support 100+ fish species, endangered sturgeon, mussels, swallow-tailed kites. Human use: Hydropower (Duke Energy), nuclear cooling (V.C. Summer), water supply (Columbia, Charleston), recreation.

Exact count varies by definition (perennial vs. intermittent, named vs. unnamed). 51 is the standard management figure.