Read "The King of California" ( http://www.amazon.com/The-King-Of-California-American/dp/158... ) for insight on what became of Central Valley's Tulare Lake, once the largest freshwater body in the United States West of the Mississippi. The lake is gone, but its footprint is now the world's largest cotton plantation, JG Boswell Company (ticker BWEL), which owns rights to millions of acre feet of Central Valley's ground water. J.G. Boswell II, who died several years ago, pioneered the use of laser-levelers, GMOs, etc., whereas his predecessor, J.G. Boswell, was an unsophisticated Georgia cotton farmer who relied on post-Reconstruction black slaves to create an empire in the heart of California.

Fascinating read. Recommended.