Drainage summary
Illinois, United States has a recorded population of 12,710,158. For drainage, the page currently shows stormwater segments: ~ 177, ditches and channels: ~ 221, low points: ~ 92, road shoulders: ~ 118, residents covered: 12,710,158. 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.