As a 23-year-old drought intensified by climate change and overallocation continue to endanger the Colorado River water supply, Arizona, Nevada and Mexico will face more reductions in their allotments, the U.S. Bureau of Reclamation announced Tuesday. According to new projections by the Department of Interior, the river’s main reservoir, Lake Mead in Nevada, will reach record low levels in January, triggering a “Tier 2a” shortage that calls for a collective reduction in Colorado River use by Arizona, Nevada and Mexico. About 80 percent of the more than 720,000 acre-feet reduction will come from Arizona. California would not be impacted by the newly declared shortage because the reductions are based on previously negotiated levels. - Inside Climate News
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