Lake Superior water levels are headed toward record lows in early fall, a projection that is causing concern about an eventual trickle-down effect in the other Great Lakes as well as Lake St. Clair.
The U.S. Army Corps of Engineers’ June forecast — looking ahead to September and October — predicts Superior’s water level will dip under the record low for that time of the year. That low was set in 1925.
Water levels in lakes Huron, Michigan, St. Clair, Erie and Ontario are all on track to fall below average in early autumn, according to Army Corps estimates.
Lakes Michigan and Huron receive 20 percent to 30 percent of their water from Superior.
At the same time in September that Superior is expected to hit a record low, engineers predict Huron and Michigan will be around 20 inches below normal, roughly at the same point they were last year.
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