Potomac Riverkeeper Network members are concerned about the potential environmental impact from the Jan. 29 plane-copter crash in the Potomac River.

Both aircraft ended up in the Potomac River. The airliner carried 64 people aboard (60 passengers and four crew) while 3 crew members were in the military unit. At least 18 bodies have been ...

This $615 million project is key to cleaning up the Potomac River. When heavy rain strikes a centuries-old neighborhood in Alexandria, Va., the city’s pipes can’t handle the volume.

The wreckage of a U.S. Army Black Hawk helicopter in the Potomac River in Washington, D.C., Thursday. (BRANDON GILES/U.S. COAST GUARD) The U.S. Coast Guard released images taken Thursday of the ...

The most famous place to see the cherry blossoms in the nation's capital is around the Tidal Basin in West Potomac Park. Many cherry trees are also along a section of the Potomac River and ...