[lumberingjack]

I have lived around the Great lakes all my life and I see the research of natural History of these Great lakes as an indicator of long-term climate. That climate ranges quite widely. Right now we think that within the last 14,000 year time period the lakes are about the lowest average they usually get rn. They have before fluctuated about 200 ft in several hundred years. But they've been much much lower before. The average is about 100 ft higher. Just think of the millions of people that's going to affect when the lakes go back to normal. They're already starting to show signs of coming up massive amounts of flooding on both sides.