The South Branch is a significant tributary of the Potomac River located in the eastern United States. It flows primarily through West Virginia and is known for its scenic beauty and recreational opportunities, including fishing and kayaking. The river's watershed supports diverse wildlife and plant species, making it an important ecological area. The South Branch is approximately 80 miles long and originates in the Allegheny Mountains. It eventually joins the North Branch to form the Potomac River, which plays a crucial role in the region's water supply and ecosystem. The river is also a popular destination for outdoor enthusiasts and nature lovers.