I used to live in Wasilla on a bluff overlooking the “Palmer Hayflats” through which this flood flowed. I kept having a recurring dream that I woke up and there was water lapping at the base of the bluff.
Then I moved to Pocatello, Idaho where the Bonneville Flood that drained Great Salt Lake flowed through the Portneuf Narrows.
Now I live in Sandpoint, ID along Lake Pend Oreille. The lake was the terminus for the glacier that dammed up the Clark Fork River and formed Glacial Lake Missoula.
What IS it with me and prehistoric mega-floods?
Yes, yes, it's obvious you are suffering Noah Complex. Be honest now, how many pets have you had?
The global warming that ended the last ice age led to a lot of flooding. There weren't too many places that escaped some impact from it.
I took basic geology courses at Idaho State and they included a field trip to the Portneuf Gap. The Lake Bonneville deluge down the Snake really must have been something to behold!