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

The pollution problem was so severe that it sparked ... Washington, DC, 1973: Raw Sewage in the Potomac River In the nation's capital, raw sewage flowed into the Potomac River through the ...

The Potomac River has been long polluted and government agencies have taken steps to clean it up, making the lamprey's appearance a sign that the pollution is finally ebbing away because the ...

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.