WINONA, Minn. — The Mississippi River is a bit darker at night in the River Valley region currently. Mayfly hatching season has begun, and the Minnesota Department of Transportation recently turned ...
CLEVELAND, Ohio -- If you’re wondering how the health of Lake Erie is doing from year to year, just keep an eye out for the annual return of the mayflies. Mayfly season is in full swing across cities ...
Mayflies emerge when deep water temperatures reach 68 degrees, which hasn't happened yet in the Great Lakes. Residents can mitigate mayfly presence by using yellow light bulbs and sealing windows and ...
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