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Keep up to date with the Southwest Climate Change Network news feeds. Drawing on a selection of high-quality credible sources, the feeds provide quick access to new and recent stories on climate change and energy in the Southwest, cutting-edge climate change research, and climate change solutions involving policy, new technology, and the private sector.

Arizona’s Groundwater Basins Down 3X Lake Powell Volume

Date Posted: 
September 28, 2011
Publisher: 
USGS

The alluvial basins of Arizona lost about 74.5 million acre-ft of groundwater between 1940 and 2007, a volume comparable to three times the maximum storage of Lake Powell. A new report from USGS evaluates groundwater availability and use in 45 Arizona basins or management areas, which account for 95% of the state’s groundwater use. Other interesting results include an estimated 1.3 million acre-ft of evapotranspiration from groundwater per year and a recent groundwater withdrawal rate of about 2.4 million acre-ft per year.

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