The nut tree farmers need some help. They are spraying water scattershot to soak the ground. What's more is that they have the ground prepared as perfectly flat bare soil--I presume to make automated harvesting possible.
It looks like a lot of resources are allocated to this rather imprecise method of irrigation and as the droughts and heat persist I could see this failing to scale. It doesn't look like it scales very well even in good times.
I was wondering, given the very organized situation of the trees and ground, why are they not using direct or site-based (drip?) irrigation? It would definitely change the watering process from one of rolling and unrolling irrigation line and towing of sprinklers (water canons?) to one where you would automate water delivery via a network of lines with computers and have workers monitor and repair lines as needed.