(CNN) When 2019 started, California's snowpack was at 67%. Now it's at over 136% and rising.

The atmospheric rivers that are dumping rain along coastal California are also dumping massive amounts of snow in the state's Sierra Nevada.

Newly released photos from NASA, taken four days and a year apart, show how much snow has fallen.

In its news release, NASA singled out Mammoth Mountain, which is now the snowiest ski resort in the United States, having received more than 37 feet since winter began. On its website, Mammoth Mountain says all that snowfall will allow the resort to stay open until the Fourth of July.

"California typically receives the majority of precipitation in December, January and February, and these storms have continued to add to our precipitation levels and increased the state's snowpack," California Department of Water Resource spokesman Chris Orrock told CNN. "Increasing the snowpack during these wet, cold months is very important."

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