What Is a Watershed and Why Are Watersheds Important? A watershed is an area of land that drains to a particular water body, such as a lake or river. No matter where you live, work, or play you are within a watershed.

You and Your Watershed: From your backyard to the Chesapeake Bay, what occurs in your neighborhood affects the water quality downstream.

What Watershed Do I Live In?: Use the map below to find out which watershed you live in.

 Watershed Management Plans

Fairfax County has developed comprehensive watershed management plans for each of the county's 30 watersheds. A watershed management plan serves as a tool to identify and address the issues affecting our environment and to protect and restore the county's streams and other water resources. Select the watershed name in the list below to view a digital copy of the watershed management plan. Hard copies of the plan may be found at local libraries and Board of Supervisor district offices that are within one mile of the watershed boundary.


Policy and Action Recommendations: Over 300 policy and action recommendations were made in the first six watershed management plans.

Community presentations

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Technical Questions: Web Administrator

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