Extreme droughts and floods will be California’s future — is the state ready?

The erosion of the Oroville Dam’s emergency spillway, which triggered the evacuation of 188,000 people, was just the first in a series of notable dam-related events in California last week. Further south in the Central Valley, about halfway between Modesto and Yosemite National Park, the spillway gates of the Don Pedro reservoir opened on Monday afternoon for the first time in two decades. A torrent of blue-green water rushed through into the Tuolumne River and began to flow through the Ce