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).
Baltimore/Washington International Thurgood Marshall Airport. BWI is the closest airport to Columbia, at approximately 18 miles east of the town. Major airlines servicing BWI include, but are not limited to, American Airlines, U.S. Airways, United Airlines, Southwest Airlines, Delta and British Airways.ulles International Airport is approximately 45 miles southwest of Columbia in Fairfax County, Virginia. As Dulles is an international hub, you may depart from there if you are traveling to Europe or destinations beyond the Western Hemisphere in Africa, Asia and the Middle East.