Watershed

Chicago

A watershed connects rainfall and streams across an area. It does not necessarily describe where a city’s treated drinking water originates.

07120003

Available records

Available tests and water assessments

These counts bring together results from local place pages, and some may overlap. They tell you how much information is available, not how much water is in good or poor condition.

9surface assessment-unit records0 supporting · 9 impaired · 0 unknown

390monitoring sites608 recent observations in this publication

0UCMR5 reported detectionsDetection does not automatically mean violation.

116nearby dam recordsCounts can overlap between connected locations.

Connected local views

ChicagoCook County · streamflow near normal