The University of Arizona

Monthly Archive | CLIMAS

Monthly Archive

Water Supply

Tuesday, October 21, 2008

For five consecutive years, drought in the Upper Colorado River Basin limited the water flow into Lake Powell to no more than 62 percent of the historical average. In 2004, the mammoth reservoir was only one-third full. This precipitous decline in water storage highlighted the vulnerability of the resource to the confluence of climate and societal demand. 

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