The Catawba River Basin extends across North and South Carolina.
Within South Carolina, the river flows through the Piedmont,
Sandhills, and Upper Coastal Plain regions of the State, and
encompasses 2,323 square miles and twenty-one (21) watersheds.
There are a total of 3,140 stream miles and 26,310 acres of lake
waters in the basin within SC.
The Catawba River originates in North Carolina and flows through
Lake Wylie and into South Carolina. Allison Creek flows into
the midlake region of Lake Wylie within South Carolina. The Catawba
River flows out of Lake Wylie and is joined by Sugar Creek, Twelvemile
Creek, and Cane Creek before draining into the Fishing Creek
Reservoir. It flows out of the Fishing Creek Reservoir and joins
with Fishing Creek and flows into the Great Falls Reservoir.
The river then joins with Camp Creek and Rocky Creek to form
the Cedar Creek Reservoir. Cedar Creek flows into the Catawba
River just below the Cedar Creek Reservoir dam. The Catawba River
joins the Big Wateree Creek to form the Wateree River, which
flows through Lake Wateree. Grannies Quarter Creek and Sawneys
Creek flow into the Watereee River downstream to Lake Wateree.
Twentyfive Mile Creek and Big Pine Creek enter the river near
the city of Camden, followed by Swift Creek, Spears Creek, and
Colonels Creek before merging with the Congaree River Basin to
form the Santee River Basin.