The South River is one of the two main tributaries of the South Fork of the Shenandoah River. It begins south of Staunton, Virginia, and flows northward to Port Republic, where it merges with the North River to form the South Fork. The river is 52.6 miles (84.7 km) long.
The South River flows through Stuarts Draft, Waynesboro, Dooms, Crimora, Harriston, Grottoes, and Port Republic.
In Waynesboro, the DuPont (now Invista) plant, and others, heavily polluted the river with mercury. It is unsafe to eat fish caught from the river, and fishing most of the way down the South Fork of the Shenandoah is catch and release only.
Coordinates: 38°0′57.9″N 79°1′54.3″W / 38.016083°N 79.031750°W