Rock Run (Potomac River)
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Rock Run is a tributary stream of the Potomac River in Montgomery County, Maryland. The headwaters of the stream rise in the village of Potomac, and the creek flows southeast for 5.3 miles (8.5 km) to the Potomac River.
See also 
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed August 15, 2011
- Countywide Stream Protection Strategy: Rock Run Watershed, Montgomery County Department of Environmental Protection.
- Rock Run Stream Valley Park, Montgomery County Department of Parks
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