How did a giant, gaping hole tear through the massive Oroville Dam’s main concrete spillway last week, setting in motion the chain of events that could have led to one of America’s deadliest ...

W 300 South — will be closed starting June 2, 2025. The road will remain closed to all traffic until construction is completed, as crews will be constructing a new spillway for the dam before ...

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, Calif. (CBS) - After 11 months of investigation, an independent team on Friday released the final report on the Oroville spillway. A report by the team of six dam experts found 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.