From Discovery.com:

What If California Runs Out of Water?

A two-page article discussing the drought that is causing Californian farms to dry up, the reservoirs to empty and the underground aquifers to get used up at an accelerating rate. With discussion of what can be done, which amounts to “not much.” What’s not mentioned? The fact that California borders THE PACIFIC OCEAN. That right there is a whole lot of water, ready for desalination and use. A refusal to even *consider* that option is disturbingly telling.

It seems to me sad that so many in positions of power and influence would rather see Americas agricultural capacity and economy crash than see technological innovation and the expansion of industry and nuclear power (which would probably be needed to run de-sal plants big enough to provide for the Californian cities, never mind the farmland).