Water Quality Model of the Chicago Waterway

by Bill Macaitis, Metropolitan Water Reclamation, District of Greater Chicago, Chicago, United States,
Carl Johnson, Metropolitan Water Reclamation, District of Greater Chicago, Chicago, United States,



Document Type: Proceeding Paper

Part of: Water Management in the '90s: A Time for Innovation

Abstract:

In 1992, the Metropolitan Water Reclamation District of Greater Chicago (the District) developed a QUAL2E water quality model of the Chicago waterway and Upper Illinois waterway. The model is capable of predicting CBOD, dissolved oxygen and ammonia-nitrogen and orthophosphate with 10 to 20% percent of measured values at a 95 percent confidence interval. It was calibrated and verified under flows ranging from 2,500 to 3,800 cfs in the Chicago waterway at Lockport, and flows ranging from 5,200 to 15,800 cfs in the Upper Illinois waterway at Chillicothe. Simulations are discussed.

Subject Headings: Water quality | Waterways | Simulation models | Mathematical models | Water reclamation | Water demand | Water treatment | Illinois | United States | Chicago

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