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.

Last week, the NTSB held three days of hearings looking into what led up to the fatal crash between a plane and a helicopter ...

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 ...

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

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

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

Investigators conclude pilots of Black Hawk did not hear warning from air traffic controllers to pass behind jet ...

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 ...

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 ...