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Little Falls Branch, a 3.8-mile-long (6.1 km)[1] tributary stream of the Potomac River, is located in Montgomery County, Maryland. In the 19th century, the stream was also called Powder Mill Branch.[2] It drains portions of Bethesda, Somerset, Friendship Heights, and Washington, D.C., flows under the Chesapeake and Ohio Canal (C&O), and empties into the Potomac at Little Falls rapids, which marks the upper end of the tidal Potomac.
- ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map Archived 2012-03-29 at the Wayback Machine, accessed August 15, 2011
- ^ Haley, William D., ed. (1861). Philp's Washington Described: A Complete View of the American Capital and the District of Columbia. Washington, D.C.: Rudd and Carleton. p. 195.