There are documented stories from the early 1800 quake that said it caused the Mississippi to run backwards for a short while. Being from southern Indiana we had to learn about it in our grade school history classes. I can recall 3 small tremors while I was growing up. I think the largest was a 3.5 or so.
Yes, I’d read that too.
I believe that one of the early 1800 quakes also changed the course of the Mississippie River at the far SW corner of KY.