Congressional Member Interest

SEN Durbin (IL)

SEN Duckworth (IL)

REP Jackson (IL-1)

REP Kelly (IL-2)

REP Ramirez (IL-3)

REP Garcia (IL-4)

REP Quigley (IL-5)

REP Casten (IL-6)

REP Davis (IL-7)

REP Krishnamoorthi (IL-8)

REP Schakowsky (IL-9)

REP Schneider (IL-10)

REP Foster (IL-11)

REP Underwood (IL-14)

Additional Stakeholder Interest

Metropolitan Water Reclamation District of Greater Chicago

Illinois Department of Natural Resources

Cook, DuPage, Kane, Lake, McHenry and Will Counties, Illinois and Lake County, Indiana

U.S. Geologic Survey

Current Status

Available funds will be used to:

o   Print and distribute WY 2018 and 2019 diversion accounting reports. Complete diversion accounting computations for WY 2020 and 2021. Complete data collection for WY 2022.

o   Incorporate updated sewer model into LMDA process. Use beta-version of HEC-RAS to rebuild TARP model in HEC-RAS, replacing legacy model. Update legacy Develop web-based GIS interface describing interrelationship between diversion components. Recreate legacy scripts used in diversion accounting process in modern programming language. 

o   Convene 9th Technical Review Committee.

Project Description and Background

The U.S. Army Corps of Engineers is responsible for measuring and computing the diversion of Lake Michigan water of the diverted watershed. Measurements are presently taken at the Chicago Sanitary and Ship Canal (CSSC) near Lemont, Illinois. Beginning with the reversal of the flow of the Chicago River in 1900, the other Great Lakes states (Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, and Wisconsin) have been concerned about the diversions of Lake Michigan water out of the basin. Their concern has led to litigation and a series of U.S. Supreme Court Decrees, which have regulated the diversion since 1925. In accordance with the U.S. Supreme Court Decree modified in 1980, and WRDA 1986, the Corps continues to execute the responsibilities of diversion accounting computations and diversion certification.

Project Authorization

Sec 1109, Water Resources Development Act of 1986

Project Manager

Jeff Fuller

Project Location

Lake, Cook and Will County, Illinois; Lake County, Indiana

Project Area / Photos

Click map to enlarge.