A new concrete surface can be seen Tuesday on the energy-dissipating dentates at the bottom of the main Oroville Dam spillway. The structures were beaten up by concrete washing down the chute when ...

The emergency spillway is lined with RCC that is at least 10 feet thick, from the concrete weir at the top down to the cutoff wall. With steps all the way up the structure, it sort of looks like a ...

Structural concrete for the project will include a weir crest structure with an adjoining stilling basin, a fish passage and fish ladder facility, and the vehicle bridge structure.

The researchers also found subsidence of 40 millimeters, or about 1.6 inches, per year occurring along a narrow line inside the spillway along the concrete weir structure used to direct ...

Updated 7:15 a.m. Wednesday, March 20 Federal emergency relief officials have provided new details on their decision to reject California's request to reimburse the state for work to rebuild and ...

It’s rare, actually, to have all of the weirs operating. We typically see the utilization of those weirs anywhere between 5 to 10 years. As an example, the Sacramento Weir was built in 1917.

And like clockwork, as the water recedes, sturgeon, salmon and other fish get stranded in the slim channel that forms at the base of the nearly two-mile-long concrete weir. Inevitably, a few days ...

OROVILLE — The state Department of Water Resources announced that it met its self-set Nov. 1 deadline to finish placing concrete on the entirely rebuilt Oroville Dam spillway.