Our Watershed

Our watershed boundary does not take a traditional form due to the lack of tributaries in the northern area in Cook County.

Watershed Facts

Active subwatershed groups within the watershed boundary include the Hickory Creek Watershed Planning Group and the Silver Creek Watershed Committee.

Lower Des Plaines Watershed Facts
  • 1.5 million people
  • 491 square miles of drainage
  • 308 miles of stream
  • 77 communities
  • 3 counties
  • 24 WWTP
  • 85 Industrial Dischargers
  • 9 Congressional Districts
  • 15 State House Districts
  • 10 State Senate Districts

The Upper and Lower Des Plaines River Ecosystem Partnerships were organized in 1996 under the Illinois DNR Ecosystems Program of Conservation 2000, a multi-year initiative to preserve and restore Illinois ecosystems.  While the partnerships are no longer active, resources from their activities can be found here:


2019 Meetings

November 14 – regular member meeting is replaced by IWEA Nutrient Assessment and Reduction Plan (NARP) Workshop. Click here for more information.

Get in Touch

10S404 Knoch Knolls Road
Naperville, IL 60565

Phone: 630-428-4500
Fax: 630-428-4599

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