In 1889 the State created the Chicago Sanitary District to replace the Illinois-Michigan Canal which had become inadequate to carry the city's increasing sewage and commercial navigation needs, with the Chicago Sanitary and Ship Canal, a much larger waterway.
The Chicago River had flowed into Lake Michigan.
The District reversed the flow of the river using a series of canal locks, and increasing the river's flow from Lake
Michigan, causing it to empty into the new Canal and eventually into the DesPlaines, Illinois, and Mississippi Rivers. In 1999, this system was named a 'Civil Engineering Monument of the Millennium' by the American Society of Civil Engineers (ASCE).
This effort ensured the safety of the water supply by keeping sewer discharges out of Lake Michigan from where the city drew its water. Of course the cities downstream from Chicago - Joliet, Peoria, St Louis and many others - were likely not so fond of this effort.
Michigan, causing it to empty into the new Canal and eventually into the DesPlaines, Illinois, and Mississippi Rivers. In 1999, this system was named a 'Civil Engineering Monument of the Millennium' by the American Society of Civil Engineers (ASCE).
This effort ensured the safety of the water supply by keeping sewer discharges out of Lake Michigan from where the city drew its water. Of course the cities downstream from Chicago - Joliet, Peoria, St Louis and many others - were likely not so fond of this effort.
Chicago River - Wikipedia, the free encyclopedia
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