Very cool story! But takes a long time to transition for even a few trees, not so sure there is that much time, not sure that's creating food vs just shade.
I just saw a story on Las Vegas claiming they have no worries because of well water (OK) and that the river owes them essentially. So counting on their allotments when it dries up is pretty funny/sad. Sounds like PR that real estate folks would conjure up. Meanwhile, I have a friend moving from Utah to Vegas, plans to boat in Mead. Maybe he read that article but Utah ain't much better.
Vegas uses like 3% of the allocation, is located at the dam, and had built a straw below dead pool. If water hits Deadpool and the 97% downstream don't get their water, Vegas will be fine. It is AZ and CA that has to worry more. CA is not taking the situation seriously in the negotiations for cuts.