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Streams and Watersheds
Rockville's Streams and Watersheds
Clean, healthy streams are important for protecting people, plants, insects and other animals that call these watersheds home. As in many urban areas, the health of our streams and waterways is threatened.This is due largely to the increased pollution from human activities and the increased amount of impervious surfaces.

What Is A Watershed?
A watershed is the land area from which all water and everything carried by that water, flows or drains into a common river, lake, ocean or other body of water.

The Three Watersheds of Rockville
The City of Rockville contributes drainage to three watersheds: Cabin John Creek, Watts Branch and Rock Creek. All of Rockville's watersheds are part of the greater Potomac River Basin, which itself drains into the Chesapeake Bay. Curious about where water on your property or neighborhood flows? Visit the interactive map below to find your local watershed.

Assessments, Projects and Programs
The City of Rockville has a number of assessments, projects and programs to help restore and protect our local watersheds:

Find Your Watershed Map
Type an address (including city and state) or click an area on the map to see the local watershed.

View a full-size version of this map.

Note: This map shows watersheds within the City of Rockville limits only. Visit the Montgomery County Stream and Watershed Map for more locations.

Environmental Management Division
Department of Public Works
111 Maryland Avenue
Rockville, MD 20850

Ph: 240-314-8870
Fx: 240-314-8309 

Pollution Hotline
Report pollution or illegal dumping
Ph: 240-314-8348