Rising Temps, Demand Could Sink Colorado River: Today's Pic

The Colorado River could lose 10 percent of its volume in the next few decades from rising temperatures and higher demand. Such a change would be enough to throw off the West's precarious balance of water-use agreements that allow Denver, Tucson, Los Angeles and California's Imperial Valley to draw from the same basin.

"It may not sound like a phenomenally large amount except the water and the river is already over-allocated," said Richard Seager, a climate scientist at Columbia University's Lamont-Doherty Earth Observatory and lead author of a new study in the journal Nature Climate Change.

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