Water flows from the spillway as engineers reduce the lake level while work continues on repairs to the emergency spillway at the Oroville Dam in Oroville, Calif., Feb. 14, 2017. (Jim Wilson/The New York Times)

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Daniel Swain for Yahoo News — How Extreme Weather Could Threaten California’s Dams

“All of this infrastructure,” said Daniel Swain, a climate scientist at UCLA, “is designed for a climate that no longer exists.”