The Great Lakes Commission and the Great Lakes and St. Lawrence Cities Initiative, with support from six funders, embarked on a project in July 2010 to identify engineering options for Chicago’s waterway system that will prevent interbasin movement of aquatic invasive species, including Asian carp. The expedited study, now completed, also examines potential improvements to the waterway’s roles in commercial navigation, recreational boating, flood and stormwater management, and water quality. Read the official news release.


From left: David Ullrich, executive director of the Great Lakes and St. Lawrence Cities Initiative, and Tim Eder, executive director of the Great Lakes Commission, speak at the media conference in Chicago on Jan. 31.

Download the media conference audio (.wav file)


Image Gallery

Below are a selection of graphics featured in the summary report. Click a size (small or large) to view the image. Right click to download the image to your desktop. All images should be credited to the Great Lakes Commission unless otherwise indicated.

  • Study Area and Great Lakes Watershed (page 2) – Small or Large
  • Chicago Waterway Map (page 3) – Small or Large
  • Separation Alternatives (page 5) – Small or Large
  • Historic flow, circa 1900 (page 6) – Small or Large
  • Key Elements of the Separation Alternatives (page 12) – Small or Large
  • Down River Alternative (page 16) – Small or Large
  • Mid-System Alternative (page 17) – Small or Large
  • Conceptual Rendering (page 17) – Small or Large – credit: HDR, Inc.
  • Near Lake Alternative (page 18) – Small or Large
  • Total Costs ($Billions)(Present Value) (page 19) – Small or Large
  • Summary Report Cover – Small or Large

Additional Materials


Tim Eder, Executive Director, Great Lakes Commission
734-971-9135 or 734-604-7281 (cell);

David Ullrich, Executive Director, Great Lakes and St. Lawrence Cities Initiative
312-201-4516 or 312-480-6501 (cell);

Tim Eder and David Ullrich biographies

Great Lakes Commission  //  Great Lakes and St. Lawrence Cities Initiative