This is a large scale issue, I don't pretend to understand it completely.
What seems odd to me...
In the news I noticed;
1. Farms with dry, dead crops had monoculture with zero ground cover, just dead dirt. Wouldn't some simple mulch or ground cover plants help conserve whatever moisture can be found?
I'm sure some are doing that already
2. Are they really replacing grass with rock landscaping ? State paid?
Wouldn't dead sod protect the soil better than rock landscaping?
Whenever I hear of these California issues I can't help but think of this story;
http://youtu.be/v_7yEPNUXsU