Drainage summary
Marin County, California has a recorded population of 256,400. For drainage, the page currently shows stormwater segments: ~ 206, ditches and channels: ~ 41, low points: ~ 17, road shoulders: ~ 137, residents covered: 256,400. 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.