Instead of being flush with newly melted snow, Folsom Lake is the driest it’s been in springtime since the epic drought of 1977. Water levels are so low that temporary pumps probably will be installed to help move water out of the stricken reservoir.

Water levels at Lake Oroville have plunged to the point that its giant hydropower plant could be idled for the first time ever this summer, putting additional strain on California’s troubled electric grid. At Shasta Lake, which feeds the Sacramento River watershed and much of the Central Valley, conditions are so bad that major cities are drawing up conservation plans, farmers have scaled back plantings and environmentalists are angrily warning of extensive fish kills.