Drainage summary
Washington, United States has a recorded population of 7,958,180. For drainage, the page currently shows stormwater segments: ~ 141, ditches and channels: ~ 176, low points: ~ 74, road shoulders: ~ 94, residents covered: 7,958,180. 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.