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Does that mean we are out of the woods and the spillway won't fail?
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Feb 13, 2017 06:31
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It still has a shitload of pressure pushing on it from the inside, so there's probably still a chance, but it's not being eroded from the top anymore. If it falls a bit more they can start to repair it. They have about a week until a new storm comes in and wrecks poo poo.
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Feb 13, 2017 06:32
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Blind Rasputin posted:Does that mean we are out of the woods and the spillway won't fail? It will fail later this week after it rains some more, and a bunch of people have gone back to their homes. Satan will let the dam's collapse wait for better lighting.
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Feb 13, 2017 06:33
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Blind Rasputin posted:Does that mean we are out of the woods and the spillway won't fail? No. It decreases the likelihood of failure in the immediate future, but there’s more rain coming and both spillways are busted. I think they can drain the lake a little through the powerhouse, though, so that’s good (at like 20% the ordinary maximum spillway rate).
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Feb 13, 2017 06:34
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Platystemon posted:No. concrete chunks and crap from the busted spillway has clogged up the main outlets so they cant use the powerhouse
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Feb 13, 2017 06:39
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If a political scandal arises from this, can we call it "Floodgate?"
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Feb 13, 2017 06:44
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News stream I'm watching said there is, "an evacuation center at 221 E YOLO street." That has got to be a loving troll joke.
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Feb 13, 2017 06:44
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Space Jam posted:If a political scandal arises from this, can we call it "Floodgate?" I'll allow it.
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Feb 13, 2017 06:45
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boner confessor posted:concrete chunks and crap from the busted spillway has clogged up the main outlets so they cant use the powerhouse I suggested: Platystemon posted:Use those firefighting helicopter buckets, but filled with quick‐set concrete instead of flame retardant. on Wednesday, so I will now use my powers of prognostication to predict the use of explosives to clear the channel. There’s been a shitload seismic modelling done on that dam in particular, so the experts ought to know if it’s safe or not. I don’t know off‐hand, though.
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Feb 13, 2017 06:46
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Blind Rasputin posted:News stream I'm watching said there is, "an evacuation center at 221 E YOLO street." Nope there is indeed a Yolo County, Woodland is part of it.
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Feb 13, 2017 06:46
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The news has really slowed down. A positive trickle of information you might say.
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Feb 13, 2017 06:46
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Blind Rasputin posted:News stream I'm watching said there is, "an evacuation center at 221 E YOLO street." Nah, it’s a county.
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Feb 13, 2017 06:46
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Psycho Society posted:It still has a shitload of pressure pushing on it from the inside, so there's probably still a chance, but it's not being eroded from the top anymore. 3 days....  they can fix it in 3 days right?
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Feb 13, 2017 06:46
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Suuuure. So many people are going to be homeless, drat.
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Feb 13, 2017 06:48
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Blind Rasputin posted:News stream I'm watching said there is, "an evacuation center at 221 E YOLO street." nah I used to live in Yolo County (davis ftw). its an indian word or something i forget exactly but its p old. a lot of california counties are indian names like Sonoma, Napa, and Marin iirc
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Feb 13, 2017 06:54
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All those guys who evacuated are gonna be tired as poo poo at work tomorrow.
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Feb 13, 2017 06:56
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 It would be so insulting to get run over by one of these.
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Feb 13, 2017 06:56
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"Update from Cal Fire moments ago - The Lake Oroville Dam Auxiliary Spillway structure has suffered potentially catastrophic damage as a result of erosion secondary to water flow. This damage could result in catastrophic failure of the Auxiliary Spillway. The California Department of Water Resources has increased exhaust water flow from the Gated Spillway to 100,000 cfs, in an attempt to decrease Lake Oroville water levels. This effort is an attempt to reduce flow from the Auxiliary Spillway. As an additional measure, helicopters will be depositing rock filled containers to strengthen the potential failure point. This development caused the Butte County Sheriff, Kory L. Honea, to order the mandatory evacuation of the City of Oroville, south to the Sutter County Line. Residents are advised to evacuate to one of the shelters listed below. The Sheriff, in an effort to safe guard residents of Butte County, had no choice but to make the decision to require this mandatory order. CAL FIRE Incident Management Team #3 is now in Unified Command with Butte County Sheriff and the Department of Water Resources on managing the incident." Yikes. From imminent catastrophe to ticking timebomb. That seems like an unfortunate design oversight, if the auxiliary spillway is subject to "catastrophic damage" when used as intended.
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Feb 13, 2017 06:57
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lock stock and Cheryl posted:Yikes. From imminent catastrophe to ticking timebomb. That seems like an unfortunate design oversight, if the auxiliary spillway is subject to "catastrophic damage" when used as intended. The alternative is to just not have an emergency spillway, so if the dam breaks the dam breaks and everyone dies
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Feb 13, 2017 06:59
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Platystemon posted:
This is the only bus that runs from sacramento international airport to downtown.
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Feb 13, 2017 07:00
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From Wednesday:quote:The emergency spillway, which has never been used, is designed for the scenario of the “biggest flood that any overgenerous engineer could ever dream of coming through that system with a full reservoir,” said Lund of UC Davis. The flows would be unregulated, meaning the state wouldn’t have any control over how much water pours down the emergency spillway, Lund said. That engineer didn’t have a very good imagination.
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Feb 13, 2017 07:01
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Is california finally sinking into the ocean?
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Feb 13, 2017 07:04
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lock stock and Cheryl posted:"Update from Cal Fire moments ago - no, the auxiliary (emergency) spillway is the safety valve. when the dam was being designed they considered the "what if everything goes to hell" situation and planned for that, which was the emergency spillway. the problem is that it's falling apart faster than designed. it's like the airbags in a car - if your airbags have been triggered then something lovely happened and you're probably gonna have a bad day but it's a lot better that they went off probably than if you didn't have airbags
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Feb 13, 2017 07:06
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Every 200 or so winters california gets something called a "megaflood" which through rainfall alone are perfectly capable of flooding nearly all the entire central valley including Sacramento. This isn't one of those.
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Feb 13, 2017 07:07
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I think they had closed the normal spillway to try and fix it and then left it closed for too long, so instead of just a little trickle coming over the emergency hill they got a major overflow.
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Feb 13, 2017 07:07
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Guy Goodbody posted:The alternative is to just not have an emergency spillway, so if the dam breaks the dam breaks and everyone dies You have to have an emergency spillway, but you don’t have to have one ‘subject to "catastrophic damage" when used as intended.’ In about thirty hours it went from “this is the first time water has ever trickled over” to “GET OUT WHILE YOU STILL CAN”. And it did this in far from worst‐case weather. An emergency spillway ought to have had the integrity to last days of sustained downpour.
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Feb 13, 2017 07:08
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Well, the alternative is to have an emergency spillway that doesn't erode away immediately if used. Like if it was an actual concrete channel they could let it overflow while they fixed the gated spillway. So now they are pretty much hosed. Water is still coming into the reservoir regardless of rain and the only way to let it out is through the damaged spillway, and they have to hope that won't cause any structural issues.
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Feb 13, 2017 07:09
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Platystemon posted:You have to have an emergency spillway, but you don’t have to have one ‘subject to "catastrophic damage" when used as intended.’ jamal posted:Well, the alternative is to have an emergency spillway that doesn't erode away immediately if used. Like if it was an actual concrete channel they could let it overflow while they fixed the gated spillway. Do you guys have any idea how much more expensive that would've been?
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Feb 13, 2017 07:10
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so if it keeps raining in winter for california do you think they're gonna have to adapt by making many more reservoirs?
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Feb 13, 2017 07:10
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The sheriff just said that about 180,000 people are under evacuation from the region. drat
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Feb 13, 2017 07:11
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Guy Goodbody posted:Do you guys have any idea how much more expensive that would've been? About as expensive as the normal spillway, less expensive than the property damage and disruption caused by not building it.
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Feb 13, 2017 07:12
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Platystemon posted:About as expensive as the normal spillway, I'm pretty sure an actual concrete spillway would've been more expensive than a dirt spillway.
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Feb 13, 2017 07:15
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Feb 13, 2017 07:15
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Lamebot posted:so if it keeps raining in winter for california do you think they're gonna have to adapt by making many more reservoirs? No. The real issue is the extended droughts coupled with the erratic, extended rainy periods. A new reservoir would go unused mostly, then get filled with muddy rear end water from a freak storm once in a while.
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Feb 13, 2017 07:15
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As it stands now, the estimates to fix it are between 100~300 million dollars, for new spillways and whatnot. If it gets worse, who knows.
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Feb 13, 2017 07:15
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Lime Tonics posted:As it stands now, the estimates to fix it are between 100~300 million dollars, for new spillways and whatnot. If it gets worse, who knows. So less than one F-35? sweet
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Feb 13, 2017 07:16
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Guy Goodbody posted:I'm pretty sure an actual concrete spillway would've been more expensive than a dirt spillway. They built one actual concrete spillway. It’s the one with the gaping hole in it.
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Feb 13, 2017 07:20
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Why don't they make the whole spillway out of the black box?
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Feb 13, 2017 07:21
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Lamebot posted:so if it keeps raining in winter for california do you think they're gonna have to adapt by making many more reservoirs? Oroville has the Forebay and Afterbay which also hold water at the valley floor. The Afterbay is big enough to call a lake on its own, people would take jet skis and poo poo out there I remember.
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Feb 13, 2017 07:22
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Lime Tonics posted:As it stands now, the estimates to fix it are between 100~300 million dollars, for new spillways and whatnot. If it gets worse, who knows. we can just use the tax money from all the legal pot to fix it aw gently caress wait they didnt write the bill very well and pot sales are tax free for a whole year??
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Feb 13, 2017 07:22
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