Eliminating those crops would be a financial hit to the state, but it may be the only way to go. Some of the farmers got together to work out voluntary rationing. Some are tearing out older trees that take more water in the hopes of salvaging some of their younger trees. You feel bad for some of them, It's problematic for the almonds and other trees, you can't just let them die and plant when the drought I'd over (if that ever happens) it takes years to get a producing tree.
In the meantime I am hand watering some things with reclaimed water, we are taking shorter showers, and plan to put fake grass in the one small area we have grass and replace any remaining spray heads with drip. And we have instituted a "if it's yellow let it mellow, if it's brown, flush it down" plan. Or, as they said once in GB, "spare your blushes, share your flushes".
I am aiming for 30% reduction.