Taking off north-bound (runway 1) wouldn't give you the option of flying up the Anacostia (the right spur that bisects DC when looking at a standard map). Taki

Taking off north-bound (runway 1) wouldn't give you the option of flying up the Anacostia (the right spur that bisects DC when looking at a standard map). Taking of north-east (runway 4) would give you the option of taking the Potomac (left) or Anacostia (right). I've never seen runway 4 used. It's usually a north flow using 1.