South Chicago, Chicago, Ill. —
The Grand Calumet river meanders for 13 miles—most of it through Northwest Indiana. It winds from a lagoon in Gary to Hegewisch on Chicago’s South Side, and eventually dumps into Lake Michigan.
What it dumps has been a big concern for decades: tons of sludge contaminated with mercury, PCBs and cyanide. There have been efforts to clean up the river.
But in spite of those efforts, the Grand Cal remains one of the biggest threats to the health and vitality of Lake Michigan.
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