The atmospheric rivers that rain along the California coast also throw huge amounts of snow into the state's Sierra Nevada.
Newly released NASA photos, taken four days and a year apart, show how much snow has fallen.
In its press release, NASA highlighted Mammoth Mountain, which is now the snowiest ski resort in the United States, having reached more than 37 feet since the beginning of winter. On its website, Mammoth Mountain says that the place can stay open until 4 July with all the snowfall.
"California usually receives the most rainfall in December, January and February, and these storms have continued to increase rainfall and increase the state's snowpack," said California Oratory spokesman Chris Orrock told CNN. "It's very important to increase the snowpack in these wet, cold months."
The department is cautiously optimistic about the current amount of snow, Orrock said.
The snow and the rain in California are not so fast. either. More storms put down even more rainfall.
Water is a gift from the state that has experienced a prolonged and dangerous drought in recent years. Things were so bad that the groundwater basins were exhausted and some localities imposed water restrictions.
According to DWR, when the snow cover of the Sierra Nevada melts in the warmer months, over 30% of California's water needs are replenished during the year.
Although much of the state has no drought, it will take time for the snowpack to fill the groundwater basins.
"That's why we need to continue to make preservation in California a way of life," says Orrock.