Think of this the next time you kayak, drive over, run by or, simply, stare at the Potomac River: Its ruin would cost the D.C. region nearly $15 billion in the first month, according to a report ...

Montgomery County rescue workers on Monday recovered a body from the Potomac River, saying they believe it to be a swimmer whose disappearance last week prompted a days-long search.

Dozens gathered for a vigil along the Potomac River in Alexandria, Va., to honor the 67 victims who lost their lives in last week's mid-air crash between a commercial airplane and Army helicopter ...