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Once the debris is cleared and the power plant is restarted, the facility is capable of draining another 14,000 cfs from the lake.
“We’re shooting to be able to re-operate it a week from Monday if we need to,” said Chris Orrock, a spokesman for the Department of Water Resources, which manages the dam. But he noted “it’s not a guaranteed date.” Meanwhile, despite the wet weather, crews continue to haul rock and cement into the eroded areas below the emergency spillway in case it should need to be used again.
originally posted by: dianajune
originally posted by: Reverbs
a reply to: dianajune
Oroville Dam is at 851 feet still dropping, but that should change soon only 1/4 inch of rain at the dam site in the last 12 hours.
That's good. According to the following link, it's now 850.74
Also has anyone discussed Gov Brown and how he is taking action or not? I last heard he was very busy getting "funding" and back up plans of National guard etc. in place, but not really releasing info to the public?
Also how are the evacuations going? gas stations ran out last I heard and some looting began last night?
Just now jumping in to find out some info. Also is there a list of the affected towns and cities in worst case scenario? Has anyone talked about displacement pressure that could cause a major earthquake? Although the dam is well over due for upgrades and repairs, how close was the nearest fracking operation to the dam?
"razzed" for having connected the Dam, the incoming storms and the vulnerability of major EQs in conjunction, NOW seems all that has changed.
originally posted by: antar
Thanks for the update and thread.
Damage to Oroville's main spillway 'was an accident waiting to happen
“It was an accident waiting to happen from Dayff One,” said Don Colson, a retired engineer who worked on the Oroville Dam design in the 1960s and went on to a 36-year career at the state water agency. “This was a mistake that went back to the very beginning.”
Colson, who worked on other parts of the dam, said the design of the spillway never fully analyzed the potential for cavitation, which occurs when roiling water creates air pockets that cause high-pressure intrusion into cracks and fissures. The action can chew through thick concrete and even steel.
But some of the nation’s top civil engineers are already pointing to some likely suspects: design flaws, misunderstood geology and poor maintenance over the years.
The dam was one of many built in a flurry of construction in the 1960s, when engineering analysis was far less sophisticated than it is today and engineers had to rely on slide rules rather than computational models
All of the engineers said the state will likely have to replace the entire spillway, given the damage that occurred at such a moderate rate of discharge. That could cost more than $100 million, they estimated. And there are hundreds of thousands of cubic yards of debris that were deposited in the Feather River that will have to be dredged out to allow the dam to operate normally
Moreno estimated the water released from Almanor, Bucks Lake and its other reservoirs at 2000 cubic feet per second. At about 2 percent of what DWR managers have been releasing from Lake Oroville, "it's the proverbial drop in a bucket," Moreno said.
In fact, all of the nine reservoirs in the Feather River watershed that feed directly into Lake Oroville are brimming with water from recent storms.
With more rain falling and another even heavier storm predicted for Monday and Tuesday, Plumas County officials are anxiously watching both the sky and the reservoirs above their communities.
"I'm watching, and I'm worried," said Plumas County Supervisor Kevin Goss.
DWR officials were preoccupied with the situation at Oroville and unavailable for comment on how they manage Antelope Lake. "I don't even know where that reservoir is," said DWR spokesman Chris Orrock, preoccupied with the situation at Oroville, where nearly 200,000 people were briefly ordered to evacuate last week amid fears that the dam’s emergency spillway would fail.