Water - CA

submitted by Samuel Bendett

Homeland Security News Wire - September 26, 2012

According to the July 2011 census, more than thirty-seven million people live in the state of California, increasing the pressure on the state’s water sources. Desalinating sea water as a solution to the scarcity of fresh water is not a new technology — it has been around for more than four decades — but it has more recently been considered as a way to address California’s chronic, and growing, water shortage.

The Seattle Times reports that the idea has run into problems, and rising construction costs, energy requirements for running desalination plants, and legal challenges have limited desalination in California to only one plant producing drinking water.

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submitted by Samuel Bendett

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Groundwater depletion has been most severe in the purple areas indicated on these maps of (A) the High Plains and (B) California's Central Valley. These heavily affected areas are concentrated in parts of the Texas Panhandle, western Kansas, and the Tulare Basin in California's Central Valley. Changes in groundwater levels in (A) are adapted from a 2009 report by the U.S. Geological Survey and in (B) from a 1989 report by the USGS.

Homeland Security News Wire - May 29, 2012

The U.S. food supply may be vulnerable to rapid groundwater depletion from irrigated agriculture; for example, from 2006 to 2009, farmers in the south of California’s Central Valley depleted enough groundwater to fill the U.S. largest man-made reservoir, Lake Mead near Las Vegas — a level of groundwater depletion that is unsustainable at current recharge rates