[katana]

Not to sound flippant, but probably the sky. At least in this part of the Midwest, about four hours by interstate highway east of Lake Michigan, in contrast to the west we had a very wet last Spring, Summer, and Autumn. In terms of geologic history post glacial uplift continues and the Great Lakes have over the last ten thousand years become gradually smaller. So this rise in lake levels should be a temporary aberration.

[Paul46360]

What does a BUCK-EYE know about the great lakes??? BTW wTH is a buck-eye???

[Hot Tabasco]

So this rise in lake levels should be a temporary aberration.

Obviously you don't live in Michigan.....this is not an aberration, this is a return to normalcy since the great lakes and Lake St. Clair levels have been below normal levels for the past number of years......

The severity of last winter caused the great lakes to freeze over, thus preventing the evaporation of lake water and the enormous amount of snow we received provided the necessary water to raise the levels of the lakes.......

Just like everywhere else, our weather is cyclical and so is the water levels of our lakes.........

[cripplecreek]

Not to sound flippant, but probably the sky. At least in this part of the Midwest, about four hours by interstate highway east of Lake Michigan, in contrast to the west we had a very wet last Spring, Summer, and Autumn.

Yeah. We had the severe 2012 drought followed by a couple of years of above average rain and snowfall with a winter that sealed the lakes under ice. The rise was easy to predict.