The Thornton River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 1, 2011 river in the U.S. state of Virginia. It rises at Thornton Gap in Shenandoah National Park and flows east through Rappahannock County, running parallel to U.S. Route 211 until it reaches the town of Sperryville. Continuing east into Culpeper County, the Thornton River joins the Hazel River, a tributary of the Rappahannock River, and thus part of the Chesapeake Bay watershed.
Fletcher's Mill was a historic mill on the river, at at Fletcher Mill, Virginia.Fletchers Mill in Sperryville in an early 1980s photo and pic of Fletcher's Mill, circa 1870, Fletchers Mill, VA (photographed in 2018) Chicago, IL, est. 1873. Available in a google book.
See also List of rivers in Virginia
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