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 Editorials | Environmental | February 2008 
Study: Las Vegas Water Source Could Run Dry by 2021
 Adam Tanner - Reuters
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| | Lake Mead, located on the border of Arizona and Nevada, is shown in this July, 2004 file photo. If the current drought continues with no change in intensity and no change in the rate of reservoir releases, Phil Mutz, New Mexico's commissioner on the Upper Colorado River Compact Commission, said Lake Powell would approach dead storage - the level at which no more water could be released - in perhaps four years. (The Mexican/Clyde Mueller) | | |
Chances are about even that Lake Mead, the prime source of water for the desert city of Las Vegas, will run dry in 13 years if usage is not cut back, according to study released Tuesday.
The finding is the latest warning about water woes threatening the future of the fast-growing U.S. casino capital and comes amid a sustained drought in the American West.
The study by two researchers at the Scripps Institution of Oceanography at the University of California San Diego, calculates a 10 percent chance that Lake Mead will run dry in six years and a 50 percent probability it will be gone by 2021 absent other changes.
"Our reaction was frankly one of being stunned," study co-author Tim Barnett, a marine research physicist, said in an interview. "We had not expected the problem to be so severe and so up close to us in time."
Climate change -- both man-made and natural variation -- strong human demand and evaporation are all factors affecting water in the lake. "The biggest change right now is taking more water from the bucket than we are putting into it," Barnett said.
The uncertainty about when and if the lake will run dry stems from the natural fluctuations of the Colorado River, the researcher said.
The West has suffered years of drought with the Colorado supplying less water to Lake Mead, which serves Nevada, California, Arizona and Mexico.
The lake created by Hoover Dam provides 90 percent of Las Vegas' water and is less than half full, giving the edge of the lake a bath tub ring visible even far away by air.
(Editing by Todd Eastham) |
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