A storm moving across Northern California is expected to drop several feet of snow in the Sierra Nevada and bring much-needed relief to depleted reservoirs.
The downpour is part of a wave of storms that is expected to bring rain and snow to California into the new year.
The state has received just 61 percent of its normal precipitation for this time of year, after a dry winter last year.
State water officials have worried that a second winter of below-average precipitation would further strain the state's water-delivery system and force rationing.
State hydrologist Maury Roos says the current storm wave could bring December's precipitation close to normal.