A Watershed is an area of land from which all water drains to a common body of water. The extent of a watershed is formed by the topography of an area, and hills and ridges form the boundary between watersheds. Small watersheds are part of larger watersheds, which in turn are part of even larger watersheds. Washington County’s watersheds are part of the Ohio River Watershed, which is part of the Mississippi River Watershed, which flows into the Gulf of Mexico. Yes, rain that falls in your back yard eventually makes it all the way to the Gulf of Mexico.  What happens in the headwaters (the small streams) effects water quality downstream.  Washington County has fifteen main watersheds, some of which are shared with neighboring counties and West Virginia.

Member Watershed Organizations

The Alliance is made up of  individual watershed  associations. These are our active organizations.  Click on the logos to find out more about each individual watershed and it's stewarding association.

Chartiers Creek Watershed Logo.gif
Additional Local Watershed Groups
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The Washington County Watershed Alliance (WCWA) is a nonprofit organization in Washington, PA founded to enhance and coordinate conservation efforts throughout the County and to support the activities of individual watershed associations. 

WCWA Mission: Through a watershed based approach, will: provide a collaborative framework to support the efforts of all local watershed associations; encourage responsible utilization of air, land and water resources; to support sound agricultural activities, encourage sustainable land use, and the protection and preservation of agricultural lands; and promote the protection, preservation and enhancement of the county’s natural resources, biodiversity and ecological health for the benefit of current and future generations.


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M-F 8 AM - 4:30 PM

50 Old Hickory Ridge Road, Suite 1  
​Washington, PA 15301

T: 724-705-7098

(Ask for Jennifer Dann)

E: info@wcwalliance.org

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