Fact is that California has plenty of water most of the time. Occasionally the weather patterns shift a bit, and we miss out on normal rainfall for a year, maybe two. Then it comes back, and we have plenty of water again.
This is just how it is. Making idiotic suggestions about not farming the Central Valley, or ridiculing that "most of California is a desert", so don't live there, etc, etc.. just shows your feeble-mindedness.
Lots of folks live in Tornado Alley, or along the Hurricane coast, and get ridiculous amounts of Federal aid every year. California has much less frequent water problems than those areas have their problems, but nobody seems to be telling those people, hey you live in a stupid place, why don't you move somewhere else.