Horse Creek Valley is a geographic area along Horse Creek, a tributary of the Savannah River. It lies within present-day Aiken County, South Carolina (prior to 1872, in Edgefield District / Edgefield County). The area is alternately referred to as "Midland Valley". Rising near Vaucluse, South Carolina, Horse Creek enters the Savannah two miles downstream of downtown Augusta, Georgia. Other communities along Horse Creek include Graniteville, Warrenville, Gloverville, Langley, Burnettown, Bath, and Clearwater. While Horse Creek itself is rather insignificant, its potential for water power led to early examples of Southern industrialization, including a textile mill at Vaucluse (1830) and William Gregg's Graniteville Mill (1845). The textile industry continued to play a primary role until the Graniteville Train Derailment and final closure of the Graniteville Mill in 2006.