South Carolina Department of Natural Resources
Boat Ramps within Freshwater
The dividing line between saltwater and freshwater on the rivers listed is defined in this section, and all waters of the rivers and their tributaries, streams, and estuaries lying seaward of the dividing lines are considered saltwaters, and all waters lying landward or upstream from all dividing lines are considered freshwaters for purposes of licensing and regulating commercial and recreational fishing.
The freshwater/saltwater dividing line is U.S. Highway 17. The Freshwater/Saltwater dividing line is an approximation of the line described in South Carolina Code Section 50-5-80.