The biggest source of salty freshwater in D.C. and other major northern inland cities is an overapplication of road salt to thaw winter ice, which runs off into rivers or the ground.

About 16 miles from downtown D.C., the Potomac Water Filtration Plant captures water from the Potomac before it joins the Anacostia River. On a recent day in May, the river was an opaque brown as ...

A mass fish die-off in Iraq’s marshlands is the latest hit to a region troubled by drought and water scarcity. Ongoing drought is expected to drop China’s national wheat harvest to its lowest output ...

The Chesapeake Bay’s health has taken a downturn, according to a new report card, with the estuary relegated from a “C+” to a ...

The organization has protected over 60,000 acres and over 100 stream miles in the 14,670-square-mile Potomac River basin. “Clean water’s our north star,” Belin said.

The staff of the commission’s Section for Cooperative Water Supply on the Potomac (CO-OP) announced the flow of the Potomac River has reached a low significant enough to start drought contingencies.

“I think this one is going to be standard postspawn Potomac River grass fishing,” Lucas said. “Everything’s going to be related to grass, whether it’s low tide or high tide. Docks and wood might play ...

Officials with the Montgomery County Fire and Rescue Service (MCFRS) said a Swift Water Team responded to the Potomac River near Purple Horse Beach and Anglers Boat Ramp at around 4 p.m. for a ...