The diagram shows this better than I can explain it. At a gage height of 1 foot, our stream has the amount of water (flow) represented by the blue area. Let's say it rains and the water rises to 2 feet. The additional flow is represented by the green area.
Closest Airport to Washington, D. C., DC. The closest airport to Washington, D. C. is Ronald Reagan Washington National Airport (DCA). Distance from Ronald Reagan Washington National Airport to Washington, D. C., DC is 4,8 kilometers (3,0 miles).
Washington, D.C. airports. Most flights to Washington, D.C. land at Reagan National Airport (DCA), which is located south of downtown Washington. It is Washington, D.C.'s closest commercial airport.Airlines that have a major presence at Reagan include US Airways.he most popular times of the year to book Washington, D.C. flights are March to mid-June and mid-September to early November; the cherry blossom trees bloom in the spring, and the leaves change color in the fall.