The evacuation was ordered Sunday after a massive hole was discovered in an emergency spillway – which catches excess water when Lake Oroville’s water level rises to overflow the dam ...

New aerial footage shot by a drone shows the main spillway at Oroville Dam in Northern California, wrecked during heavy winter storms in February, slowly being rebuilt. Hundreds of construction ...

Powerful storms across California in February 2017 caused Lake Oroville’s water level to rise and overflow the dam. The water could not be drained fast enough, and the dam’s main spillway ...

A glimmer of hope arrived late Sunday night, when officials said water had finally stopped pouring over the dam's emergency spillway. The secondary spillway was in use because the main spillway ...

Powerful storms across California in February 2017 caused Lake Oroville’s water level to rise and overflow the dam. The water could not be drained fast enough, and the dam’s main spillway ...

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 ...

Raising the dam’s water level was originally envisioned to be limited to increasing the overflow sill of the spillway or installing some form of fusegate system on the spillway. These options ...

“A duckbill spillway is a type of non-linear spillway, similar to the more generally-known labyrinth spillway,” explains Aurecon dam engineer Frank Denys. He says the main aim was to increase the ...

More than 180,000 people in northern California have been told to evacuate their homes after overflow channels ... Sunday that the emergency spillway of the Oroville Dam could collapse at any ...

The dam is so full, last week the Bureau of Reclamation had to start releasing water over the top of the spillway. "We've got about 1,600 cubic feet per second points over the top. so we have ...