I have spent considerable time researching sustainable water supply and climate change. The only way to ensure reliable and sustainable supply of fresh water in the long term is to provide adequate storage; particularly in semi-arid regions subject to multiple-year droughts, such as California and the American West. Globally we are using 3.5 times more groundwater than what is naturally replenished. In California it amounts to about 7 times. The only other reasonably accessible resource that can be economically developed is river water, and for that one needs dams. I provide, what I believe, a complete and defensible argument in my book: Annandale, George. 2013. Quenching the Thirst, CreateSpace, Charleston, NC. It can be loaned free of charge from Amazon for reading pleasure on a Kindle. Purchase copies are also available at
www.amazon.com/author/georgeannandale -------------------------------------------
George Annandale D.Eng., P.E., D.WRE, F.ASCE
Principal
Highlands Ranch CO
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