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Study Blames Low 2015 Western Snowpack On High Temperatures

Rich Pedroncelli / File / AP

In this April 28, 2015 file photo, Frank Gehrke, chief of the California Cooperative Snow Surveys Program for the Department of Water Resources, checks the snowpack depth during a snow survey at Leavitt Lake near Bridgeport Calif.

Rich Pedroncelli / File / AP

(AP) - The far western United States set records for low snowpack levels in 2015, and a new report blames high temperatures rather than low precipitation levels.

The new study suggests greenhouse gases were a major contributor to the high temperatures. The study was published Monday in the journal Geophysical Research Letters.

Scientists looked at snow measurement sites in California, Oregon, Washington, western Nevada and western Idaho. They found that in 2015, more than 80 percent of those sites experienced record low snowpack levels as a result of much warmer-than-average temperatures.

Most of the previous records were set in 1977.

The snow drought led the governors of California, Oregon and Washington to order reductions in water use