A drone panoramic view of Oroville Dam and main spillway at Lake Oroville in Butte County, Calif. Photo taken March 11, 2025.

The main spillway had suffered unexpected erosion earlier this week after heavy rains caused a 30-foot-deep hole in the structure. SEE ALSO: From drought to flood, nation's biggest dam topped for ...

Workers have begun dismantling the largest dam on the Klamath River ... Some of what they remove will be used to fill in the dam’s emergency spillway which is carved into the rock beside ...

The report also accounted for the effect of an additional spillway at New Bullards Bar Dam. Yuba Water Agency, which operates the dam, has had the spillway designed and is seeking state and ...

You've advised the resort owners to repair the dam. They're thrilled. In 1995, when a spillway gate failed in the Folsom Dam in California, engineers spent more than $100 million to repair it.

Hoover Dam, in addition to being, at the time, the largest dam the world had ever ... horizontal aluminum fins for windows. The dam’s spillways were also designed with the mantra of “form ...