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Andrew Nixon / Capital Public Radio

After five years of drought there’s so much snow in the Sierra Nevada that state water officials are preparing for a massive runoff year. But the traditional way of calculating the snowpack has a huge margin of error and as Valley Public Radio’s Ezra David Romero reports a new way to measure it could greatly decrease that inconsistency.  

Every winter and spring a network of snow surveyors manually tally how much snow is in the Sierra Nevada. They do this by measuring snow depth in the same spots every year.