signed the Potomac River Watershed Trash Treaty ... The plan also includes a one-year effort to map trash “hotspots” in the watershed. For more on the trash summit, see www.potomaccleanup.org.

Researchers from the University of Maryland Center for Environmental Science have developed a new method to solve this problem, resulting in a new map of the Potomac River watershed stream network ...

it’s partly because the Potomac supplies 90 percent of the region’s drinking water. That amounts to an average of 486 million gallons a day, according to the Potomac Conservancy. The Potomac ...

These sightings are indicators that efforts to restore water quality in what George Washington called “the nation’s river” are making a difference, Hedrick Belin, President of the Potomac ...

"I'm told that if you could look at a map of the river ... explores the natural riches of the Potomac and the struggle to protect the land and water resources of the river in the face of ...

WASHINGTON — As floodwaters from this week’s torrential rains begin to recede, they are leaving behind a grim aftermath along the Potomac River: vast rafts of logs, twisted lumber, household ...

(WTOP/Dave Dildine) The streamflow of the Potomac River has been so low for the past five days that hourly drought monitoring has been required for the area’s prime drinking water supply.