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.

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

Documents released in the inquiry into the deadly midair collision over the Potomac River on Jan. 29 reveal new details about ...

As hearings unfold into the fatal January plane-helicopter collision near D.C., investigators say the FAA ignored clear ...

A long list of things went wrong in January and contributed to the collision between an Army helicopter and an American ...

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

The NTSB concluded three days of investigative hearings into the collision between an Army helicopter and a passenger plane ...

Investigators examining January's fatal midair collision near Washington have questioned the Black Hawk's altitude data, ...

FILE PHOTO: A crane retrieves part of the wreckage from the Potomac River, in the aftermath of the collision of American ...