It seems unrealistic to this in a state like Arizona, but plausible for a place like California. The central valley is not substantially uphill, nor is Napa, no

It seems unrealistic to this in a state like Arizona, but plausible for a place like California. The central valley is not substantially uphill, nor is Napa, nor are the cities. California cuttings its colorado river usage by half would be amazing, and desal is a way to get there