California’s two largest reservoirs, Lake Shasta and Lake Oroville, saw water level increases over the weekend after an atmospheric river brought heavy rain to the region. Both reservoirs have been steadily rising since November, after the start of California’s water year in October. A series of atmospheric rivers brought heavy rain to the region in December, but California hadn’t seen much rain since until another atmospheric river arrived over the weekend. As of Monday, Lake Shasta water levels were at 1,032.21 feet, a 4-foot rise over their elevation on Friday. … Lake Oroville water levels are at 847.33 feet, a nearly 7-foot rise since Friday. … To prepare for this week’s heavy rain, the DWR increased water releases to the Feather River from Lake Oroville over the weekend to “maintain flood protection for downstream communities.”

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• California Department of Water Resources: News release: Lake Oroville Update​
• Record Searchlight (Redding, Calif.): Lake Shasta waters rise during atmospheric river. Here’s how full reservoir is
• Action News Now (Chico, Calif.): California Department of Water Resources takes action to maintain safe water levels at Lake Oroville amid rising inflows
• San Francisco Chronicle: SF weather: Atmospheric river arrives with wind, flooding rain
• Stocktonia (Stockton, Calif.): Flood watch on tap for Stockton, with another atmospheric river storm to come
• Times-Standard (Humboldt, Calif.): ‘Significant flooding’ hits Eel River, SoHum
• FOX 5 (San Diego): San Diego will only get scraps of atmospheric river through California
• Arizona Republic (Phoenix): An ‘atmospheric river’ of rain is set to hit California, but it won’t make it to Arizona