Lake Bonneville. Not a worldwide flood.
That was it! Bonneville. No, I figured it wasn't a worldwide flood. I do tend to take the bible more literally than some, but nobody arguing a worldwide flood has been very convincing to me even if I might like it to be so. Doesn't add up with the animals and speciation.
Plus I polluted my mind with Edgar Cayce years ago. Among other things, a few of which may be true, somebody conjectured that after this flood, the earth tilted on its axis and drew all the excess water to the poles where it froze.