There was a geographer named John Wesley Powell who proposed making all western states based off of their watersheds to avoid water conflicts in the future. Obviously he was overruled because of politicians who wanted to make sure the right people were making money like taking Nevada away from the Mormons when they found silver there.

But that kind of system would lead to much better natural resource management than our current system.

https://www.hcn.org/blogs/goat/defining-the-west-boundaries-john-wesley-powell