Tamanend bottlenose dolphins are seasonal visitors to the Chesapeake Bay and Potomac River. They are a coastal population of ...

It will continue to get harder to ensure there’s enough drinking water from the Potomac River, according to a group that coordinates with D.C.-area water companies.

A Spirit of Washington lunch cruise boat took on water in the Potomac River shortly after leaving the D.C.'s Wharf on a test ...

The George Washington Parkway is undertaking a new initiative to upgrade and replace several of its drinking fountains, ...

It is the second of three days of witness testimony and public inquiry by the National Transportation Safety Board into ...

Photo / Petty Officer 1st Class Brandon Giles, US Coast Guard via ) Investigators painted a devastating picture today of ...

Part of the helicopter that was recovered from the Potomac River in 2005.© Gerald Herbert/AP Godfrey hugs 2-year-old daughter, Logan, following the crash.© Bill O'Leary/The Washington Post ...

The hearings revealed that the air traffic controller had been overwhelmed, the helicopter's altimeter was inaccurate and there had been previous concerns with the helicopter route.

Ten days after a passenger jet and a Black Hawk helicopter collided over the Potomac River near Washington, D.C., killing all 67 people on board, investigators have recovered most of the debris ...