On the Great Lakes, I think it's sort of silly those states won't share. It's not going to deplete the lakes enough to harm them.
The Great Lakes, I believe are already being depleted enough to cause problems. IIRC, this is partially caused by the fact that they are remanents of the ice age but I think there is reason to believe that if not the only problem.
We are simply not operating in a sustainable way. We are stealing from out children and murdering our grandchildren.