Pee Dee River

The Pee Dee River, also known as the Great Pee Dee River, is a river in the Carolinas of the United States. It originates in the Appalachian Mountains in North Carolina, where its upper course, above the mouth of the Uwharrie River, is known as the Yadkin River. The river empties into Winyah Bay, and then into the Atlantic Ocean near Georgetown.

The northeastern counties of South Carolina compose the Pee Dee region of the state.

The exposed rock formations along its course are the source of a NIST reference standard.

It is an important source of electric power and public water supplies, as well as recreational use.

While the Pee Dee is free-flowing in South Carolina, upstream in North Carolina, several dams have been constructed on it. The opening and closing of these dams causes dramatic swings in the depth of the river in South Carolina. The sharing of water between the two states has sometimes been a matter of controversy, particularly during periods of drought.

Some commercial fishing is done during the winter shad run, and for shrimp in the lower reaches. The river is excellent for recreational fishing and boating.

There are numerous boat landings, yet most of the river is wild, with forests of tupelo, oak and gum along its shores. Herons and alligators can be seen along the way, and a lucky sighting of a bald eagle is possible.

The lower part of the river from Highway 378 to Winyah Bay has been designated a Scenic River.

History
The river flows through the territory of the historic Pee Dee tribe, and is named after them. The Pee Dee were a part of the South Appalachian Mississippian culture. The first Europeans believed to have possibly navigated part of the river was a party sent by Lucas Vázquez de Ayllón in 1521.

Snow's Island is a large island at the Pee Dee and Lynches rivers junction. It has been identified as the center of Johnsonville Impact Crater. The island was the headquarters of General Francis Marion for several months during the American Revolution. It proved a haven for him and his militia troops, as the British were unable to find the camp until it was abandoned.

The world's largest lumber company existed at the turn of the 20th century near the river's mouth at Georgetown. The virgin pine forests of the Pee Dee region were cutover, and the logs floated in rafts downriver to be sawn into lumber and exported to the northern United States and Europe.

Tributaries
Some tributaries are the Lumber, the Little Pee Dee, Lynches, Black and Waccamaw rivers.

The river was an important trade route through the Low Country from colonial times. It is navigable from the Atlantic up to the Fall Line at Cheraw.

Today the river is not extensively used for navigation.

Rice
The lower part of the river flood plain was extensively developed for rice culture in colonial time; rice was the major export of the area from the port at Georgetown. Rice culture declined with the freedom of slave labor after the Civil War and with increased overseas competition. Two hurricanes at the beginning of the 20th century destroyed much of the rice canal infrastructure and effectively ended the remnants of rice culture.