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

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 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.

The first of the National Transportation Safety Board’s three days of investigative hearings is underway to help determine ...

The National Transportation Safety Board released new details Wednesday about the final moments before a mid-air crash ...

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 ...