The headwaters of the stream originate in the city of Rockville, and the branch flows southwest for 11.2 miles , under the C&O Canal near Swain's Lock, to the Potomac River, which drains to the Chesapeake Bay. The watershed area is about 22 square miles .
Portions of Watts Branch flow through a stream valley park, a mostly undeveloped natural area which acts as a riparian buffer zone to help minimize stream bank erosion and filter pollutants from stormwater runoff.
Source: Wikipedia.org
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Address: Montgomery, United States
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