Are you a fan of Randall Carlson? He has done some great analysis of the Scablands floods and the Bonneville Lake flood that followed the course of the Snake River.
No, I’ve never heard of Randall Carlson. I’ve just read some Wiki, USGS and NPS information online and in visitor’s centers.
We used to visit my uncle a lot in Twin Falls and hiked down the Snake River Canyon many times. There’s a great natural history museum at the canyon rim. The southern tier of Idaho has very little topsoil — all eroded away by the great floods.