I found the book "The West without Water: What Past Floods, Droughts, and Other Climatic Clues Tell Us about Tomorrow" very informative. http://www.amazon.com/

I found the book "The West without Water: What Past Floods, Droughts, and Other Climatic Clues Tell Us about Tomorrow" very informative. http://www.amazon.com/gp/product/0520268555 http://www.amazon.com/gp/product/0520268555 The authors describe their paleoclimatology research, what the water in the West has typically been, and how global warming may impact things (for the worse) - with some tips on mitigation.