You made me want to recheck my facts which were wrong.
http://www.hillsdalecounty.info/planningeduc0026.asp
“. The crust is rising the most, more than 21 inches per century, in the northern portion of the basin, where the glacial ice sheet was the thickest, heaviest and the last to retreat. There is little or no movement in the southern parts of the basin. As a result, the Great Lakes basin is gradually tipping, a phenomenon most pronounced around Lake Superior.”
http://greatlakesecho.org/2009/06/08/lake-levels-report-weighs-great-lakes-basins-glacial-legacy/
“The International Joint Commission, a binational group that manages the Great Lakes, wanted to know if that was happening between Lake Huron and Lake Erie.
Around 1860, the surface of Lake Huron sat around 9 feet higher than the surface of Lake Erie, according to the IJC report released in May. By 2008, Huron was only 6 feet higher than Erie.
“
Interesting. I knew the rebound was going on but it didn’t occur to that it would be faster in the north.
So, the Laurentian shield is rebounding and will eventually tip or spill the great lakes onto Michigan Wisconsin, and Ohio, but not so fast that people in those states can’t still retire and move to Texas and Florida. :)
Geology! Slow but full of fun surprises!