If your crops depend on irrigation, you are not going to make it long term.
History has shown that.
We are going to learn some very, very hard lessons about why you don’t farm in the desert.
I hate to break it to you, but modern farming methods rely on irrigation, there are very very few places where natural rainfall can support modern farming techniques... The insanely high yields per acre are only possible with irrigation. Water table depletion isn't limited to one county in California... most of the farmland in the US is depleting their aquifers, at varying rates, but few are not being depleted.