Drainage summary
District of Columbia, United States has a recorded population of 702,250. For drainage, the page currently shows stormwater segments: ~ 42, ditches and channels: ~ 52, low points: ~ 22, road shoulders: ~ 28, residents covered: 702,250. The figures use the available U.S. geography, population, housing and local-structure data for this place.
Calculated from U.S. geography, population and local structure. Public messages are moderated before publication.