SocraticGadfly: California: running out of water as seen from space

May 30, 2011

California: running out of water as seen from space

California water districts appear (for "good" selfish reasons) loth to accept what a pair of satellites is showing: the state is running low on groundwater.

How bad is it? Over the 2003-2010 period, California drew down nearly enough groundwater to fill Lake Mead, and I'll assume that's full-capacity, pre-bathtub-ring Lake Mead.

Looking at the map, some areas in the southwestern part of the Central Valley, around Tulare, look like they don't have a lot of life left.

That said, I wish the Times had produced a similar map for the Ogallala Aquifer. I doubt West Texans would totally wake up, even then, to the severity of water issues, but maybe some would.

Where data has been presented, though, and not just in California, it's been resisted:
In other areas of the world, like northern India, the novelty of the gravitational measurements — and perhaps the story they tell — has led to pushback, scientists say. ...

John Wahr, a geophysicist at the University of Colorado and his colleague Sean Swenson faced opposition for a study on aquifer depletion in northern India. As Dr. Swenson explained, “When in a place like India you say, ‘We’re doing something that is unsustainable and needs to change,’ well, people resist change. Change is expensive.”
In places on high-tension, water-focused borders, like India-Pakistan, Israel-Palestine-Jordan-Syria and such, this is understandable in a way, but still lamentable.

An interesting sidebar is that the satellites were launched from Russia and some of their data would have been considered classified before the end of the Cold War. A peace dividend!

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