"Lake Powell, the desert oasis that has served Colorado as a crucial fail-safe for water deliveries throughout the Southwest during five years of hard drought, is now more than half empty. If the drought persists a year or two more, the 186-mile-long reservoir in Utah and Arizona could be drained dry as early as 2007, federal officials say.
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On Friday, the Bureau of Reclamation said it expects only 55 percent of the normal runoff to flow into Lake Powell between April and July. That guarantees the big reservoir, already down to 42 percent of capacity, will recede even further by 2005.
Time is running out," said Pat Mulroy, director of the Southern Nevada Water Authority. "The drought no one thought would even happen is here."
Under the Colorado River Compact of 1922, the states of Colorado, Wyoming and Utah are required to allow an average of 7.5 million acre-feet per year to flow past a river gauge below Lake Powell for use by California, Arizona and Nevada. The four upper-basin states have met their compact obligations during the five-year drought by releasing water from Lake Powell. But if Powell dries up - and hydrologists caution that is still a big if - the state could eventually be required to turn off the massive transmountain tunnels that have supplied Colorado River water to Front Range residents and Eastern Plains farmers for more than 50 years."
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http://www.denverpost.com/Stories/0,1413,36~23447~2059903,00.htmlLong, fascinating and important article.