The final snow survey of the season produced bleak results for the Verde River Basin, which contained only 9 percent of its average snowpack Sunday. Lack of winter precipitation and early runoff are to blame.
The U.S. Natural Resource Conservation Service released the statewide results of its final snowpack surveys this week in its Arizona Water Supply Outlook Report. The overall snowpack accumulation in Arizona this winter was 80 percent below-average. "Virtually all of Arizona received below average precipitation last year," said Tony Haffer, chief meteorologist at the National Weather Service in Phoenix. "In addition, the same can be said for most of the last decade as well."
Climatologists have stated that the Southwest's drought cycles historically can last 20 to 30 years. Now a new study using 19 climate-modeling groups says the Southwest already is transitioning into permanent drought conditions because of global warming.
The NRCS is predicting well below normal runoff for Arizona this spring.
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