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Environmental Issues

USGS releases groundwater model of Arizona aquifers

April 13, 2011
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TUCSON, Ariz. — A new groundwater model of the interconnected aquifers in central and northern Arizona was released yesterday by the U.S. Geological Survey (USGS), following a multi-year development effort that involved the Arizona Department of Water Resources and regional cooperators, according to a press release.

The computer model, known as the “Northern Arizona Regional Groundwater-Flow Model,” simulates how recharge from rainfall and snowmelt moves through the region’s aquifers and eventually provides water to rivers, streams and springs.

“This model can help the people of Arizona understand the adequacy of their groundwater supply at regional and smaller scales and how aquifers, rivers and streams may be affected by possible groundwater development and climate variations,” said James Leenhouts, associate director of the USGS Arizona Water Science Center. “The model can also help answer questions about where, when and by how much the water table and the flow in connected aquifers are affected by groundwater withdrawals.”

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