Origin Lake Chippewa

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map of lake chippewa s north coast , mackinac channel during chippewa low water stage c. 8,000 9,500 ybp.


the lake formed glacial lake algonquin water levels dropped, occupying deepest parts of lake michigan basin. waters drained through straits of mackinac, across lake stanley either lake hough , st. lawrence river way of ottawa river valley, or through st. clair , detroit rivers lake erie , out niagara river towards st. lawrence. around 10,300 ybp, lake chippewa’s levels continued drop, , basin self-contained body of water without outlet. levels returned , lake chippewa again flowed through canyon @ mackinac until around 7,500 ybp. @ time, nipissing great lakes merged waters in michigan basin , created single lake encompassing 3 of upper great lakes.







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