National Geographic : 1954 Jun
© National Geographic Society + Shasta Lake Can Store Enough Water to Give Every American 9,000 Gallons In general, northern California is rainy, southern California parched but fertile. This huge structure gathers some of the north's excess rain and snow; pumps and canals transfer the water to semiarid south ern reaches of the 500-mile-long Central Valley. 743 Kodachromes by National Geographic Photographer J. Baylor Roberts 4+ A Cutaway Model Lays Bare the Works of the Second Largest Concrete Dam Shasta Dam rears more than 600 feet; its spillway drops three times as far as Niagara's fall. Only Grand Coulee in Washington State is larger. Shasta's concrete would pave a 3-foot walk around the Equator. A bus could pass through any one of its pipelike penstocks.