The spillways at three dams located near densely populated communities around San Jose have structural problems that are similar to the flaws that led to the failure of the main spillway at ...

When operators of Oroville Dam suddenly ordered evacuations on Sunday, it focused a big spotlight on a crucial piece of California’s flood-control infrastructure – spillways. California is ...

California water officials have stopped the flow of water down Oroville Dam's main concrete spillway, in part so they can assess damage to it and areas around it that have eroded. Use of the ...

OROVILLE (AP) - California plans to shut the shattered main spillway of the Oroville Dam for the summer on Friday, launching an all-out race to get it operational again before the next rainy season.

As officials scramble to repair a deteriorating emergency spillway at Oroville Dam in Northern California, documents show environmental groups pleaded with federal officials to reinforce the ...

The damaged Oroville Dam main spillway in 2017. Photo by Elijah Nouvelage/Getty Images Months of heavy rain across Northern California—and more to come this week—have Lake Oroville reservoir ...

PIERRE -- Officials say steps are being taken to channel the water if the Oahe Dam's emergency spillway has to be used to move floodwater out of the massive reservoir behind the South Dakota dam.