The Potomac River Basin or watershed covers 14,670 square miles through five geological provinces. The river flows over 400 miles spanning Washington, D. C. and four states -- Virginia, Maryland ...

WASHINGTON – While area drinking water sourced from the Potomac River is safe for consumption, it is not treated for the known chemicals and pharmaceuticals contaminating the river ...

The Potomac River watershed is truly the lifeblood of our region. It covers more than 14,000 square miles across four states. The watershed provides drinking water for more than six million people.

A chute of the Potomac River near Great Falls. The Potomac River is the source of drinking water for more than 6 million people in the metropolitan area.

If the Potomac River has gotten more attention than the Anacostia in the past 50 years, it’s partly because the Potomac supplies 90 percent of the region’s drinking water. That amounts to an ...

The Potomac River provides much of the District's drinking water, but is falling into worsening condition owing to rural farming and urban development, an environmental group said Thursday.

Thanks to the Clean Water Act, the story of river conservation in America is one of progress. Our rivers no longer burn. Sport fisheries abound in cities such as the District, Cleveland and New York.

Since Oct. 23, the flow of the Potomac River has largely stayed below 2,000 cubic feet per second at Point of Rocks, Maryland. Dropping below that threshold triggers daily drought monitoring by ...

Thousands of residents across D.C., Maryland and Virginia, will come together on April 8 to celebrate spring by cleaning up their neighborhoods, parks and waterways as part of the annual Potomac ...

This has caused the Potomac River to be colder than it is typically at this time of year, with ice on parts of the river.” he explained. “Last year at this time, the water in the Potomac River ...