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stallion_412 t1_je376z1 wrote

Lake Michigan flows through the Chicago River and (eventually) into the Mississippi. It didn't used to, but you can thank the Army Corp of Engineers for that.

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AFAIK, with a few exceptions (like Chicago) there's an international treaty for the Great Lakes that requires water/excess used by humans to be eventually returned to the lakes.

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Hamilton_Brad t1_je3i5w8 wrote

Neat! That’s a 30 minute rabbit hole of Chicago history, but interesting.

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