31 Oct '14, 9pm

via @grist

via @grist

Just how bad is California’s water shortage? Really, really bad, according to these new maps, which represent groundwater withdrawals in California during the first three years of the state’s ongoing and epochal drought: J.T. Reager / NASA Jet Propulsion Laboratory The maps come from a new paper in Nature Climate Change by NASA water scientist James Famiglietti. “California’s Sacramento and San Joaquin river basins have lost roughly 15 cubic kilometers of total water per year since 2011,” he writes. That’s “more water than all 38 million Californians use for domestic and municipal supplies annually — over half of which is due to groundwater pumping in the Central Valley.” Famiglietti uses satellite data to measure how much water people are sucking out of the globe’s aquifers, and summarized his research in his new paper. More than 2 billion people rely on water pumped from...

Full article: http://grist.org/food/these-maps-of-californias-water-sho...

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