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Mostly Dry November Hurts Snowpack

After a promising start to the rainy season, with record precipitation in Grass Valley in October, November has been mostly dry. And no storms are expected through the end of the month. We had two-point-one inches, compared to four-point-four a year ago. And the historical average is six-point-five inches, according to the National Weather Service. Meanwhile, Department of Water Resources Hydrologist, Dave Rizzardo, says recent systems, including the atmospheric river, on October 24th, have not been cold enough to produce much snow…

click to listen to Dave Rizzardo

Rizzardo says the water content from the two-feet of snow on Donner Summit, a month ago, was about three inches. And it’s now down to nearly zero. He says climate change has meant more reliance on just a few major storms over the winter that are often occurring in a concentrated period…

click to listen to Dave Rizzardo

Rizzardo says a year ago, the snowpack, starting December first, was only at 42-percent of average. Meanwhile, reservoir levels also continue to lag. As of Wednesday afternoon, it was 59-percent of average at Oroville Dam and just 46-percent at Shasta Dam.

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