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Mercrom posted:so is the mountain gonna break or is this one of those disasters where a week from now they have to rescue a grandma who stubbornly refuses to evacuate her flooded house the dam is not going to break, water has started going over the emergency spillway which is there to prevent the dam from breaking in an "oh poo poo there's too much water in the lake and we can't do anything about it" scenario unfortunately the emergency spillway is eroding faster than anticipated and releasing more water than expected so there is basically a dam break even if it's not that bad everything is working as designed here except the situation the emergency spillway is designed for is "we need to buy a couple hours to tell people to get out of town while the disaster happens"
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Feb 13, 2017 03:53
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Spaced God posted:What the gently caress kind of units of measurement are acre feet? Is that volume? Why is Imperial so hard 1 acre-foot of water is a sufficient volume of water to cover an acre of land in a foot of water. as a rule of thumb, this is enough water for a family for a year. in metric it's something like 1200 cubic meters
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Feb 13, 2017 03:56
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Space Crabs posted:I think that's a matter of semantics at that point. eventually the dirt on the emergency spillway will erode to bedrock, at which point the lake stops flowing out. which is still a shitload of water and this is going to be a huge flood problem but the emergency spillway is the release valve which prevents the whole dam from breaking. so it's better to have a medium size flood than lose the entire lake
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Feb 13, 2017 03:58
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Space Crabs posted:at least erosion plays by the "30 feet at a time" rule, which is fortunate for everyone. 30 feet under the top of where the emergency spillway was is bedrock, which won't erode as quickly as dirt and clay. the problem is the emergency spillway is eroding faster than they thought. it will slow down eventually
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Feb 13, 2017 04:00
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Space Crabs posted:thank god we have so many experts on the geological composition of the landscape in and around this particular dam who are also psychics that can predict exactly what will happen dont get mad bro
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Feb 13, 2017 04:10
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Random Stranger posted:I think the spillway going and releasing the top thirty feet of the reservoir counts as a dam failure in general conversation. not really, this is a bad thing that is happening that if we're lucky will result in just a bunch of flood damage but no deaths but the emergency spillway is the last ditch thing to stop the dam from breaking so it's working as intended
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Feb 13, 2017 04:22
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EugeneJ posted:This guy's claiming Sacramento is being evacuated soon: sacramento isn't in any danger even in the worst case scenario
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Feb 13, 2017 05:38
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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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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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Guy Goodbody posted:They're letting out a whole bunch of water into the Feather River, right? Like, way more than usual. And it's going to rain a lot later this week. With the river already significantly higher than normal, would the rain by itself be enough to cause flooding along the river? nah, one of the purposes of the dam is flood control which means letting out a measured amount of water so the river doesn't flow out of its channel. even when busted the dam can still do this
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Feb 13, 2017 16:25
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withak posted:Once the reservoir is full and the emergency spillway is running then the dam has is zero flood control capability because water will flow out as fast as it is flowing in. as i understood it they were not running the main spillway as hard as they could because it was damaged and causing erosion, so they let the emergency spillway take some of the pressure off... until that one started eroding even worse, so then they opened up the main spillway even more. now the water level is below the emergency spill lip but the main spillway is turbo hosed. but they're still largely in control of water release
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Feb 13, 2017 18:24
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dr_rat posted:A lot of people were poo poo scared that when ISIS took Mosul drat they were going to just blow it up. They fortunately end up not doing that, but as it was just upstream from Mosul and a bunch of there smaller towns.... that would of been pretty horrific. mosul dam is also in constant danger of collapse because the geography in the area is not suited for dams and they have to pump shitloads of grout into the ground beneath the dam, constantly, using old beat up pumps http://www.newyorker.com/magazine/2017/01/02/a-bigger-problem-than-isis
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Feb 13, 2017 18:27
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Psycho Society posted:Even so, war ravaged Iraq is still able to maintain their dams better than norcal bumpkins. lmao even when the iraqi government was in control of mosul dam they basically had to send the electricity it generated to mosul, where it was distributed by ISIS and generated revenue for them the government couldn't turn off the flow of energy to mosul without also depowering the pumps that keep the dam from collapsing
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Feb 13, 2017 18:34
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Psycho Society posted:What's the main drawback of using the primary spillway? it's broken and spewing chunks of concrete and other bullshit everywhere. basically they were like "ok well this sucks, our main spillway is all hosed up and it's gonna be expensive to fix if we keep letting this much water out, so let's give the emergency spillway a try *the emergency spillway is even worse* ok ok bad idea i guess we're just gonna have to do the expensive thing" Psycho Society posted:How much erosion would it it take it compromise the integrity of the dam proper? way more than is possible rn, the dam is a separate structure. the problem is that the local government cheaped out on making the emergency spillway robust enough to handle this job without falling apart, but there's no way to prove that it's not capable of doing the job until you have to use it and it almost fails and you end up evacuating hundreds of thousands of people in the middle of the night boner confessor fucked around with this message at 18:45 on Feb 13, 2017 |
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Feb 13, 2017 18:42
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the water is mexicans, the emergency spillway is trump's wall
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Feb 13, 2017 19:34
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Psycho Society posted:What's oroville then? white daughters and or low wage manual labor, depending
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Feb 13, 2017 19:36
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Edgar Allan Pwned posted:Is infrastructure a federal issue or a state issue depends, but typically state or some sub-state jurisdiction set up for that infrastructure. this dam is the responsibility of the state of california water management department or something iirc if the river crossed state lines then the federal government would be involved. the dam near me is owned by the us army corps of engineers who is sort of the official us federal government civil works and infrastructure division for anything that isn't specifically transportation related
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Feb 14, 2017 18:52
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Guy Goodbody posted:lol you dumb rear end in a top hat. The dust bowl was caused by farming practices supported by the Federal government the same federal government that created california through extensive government support of military installations, the energy industry, and fat military contracts for aerospace???????? after the us government declared an illegal war on mexico to sieze mexican land in california and open it to white settlers???
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Feb 14, 2017 20:56
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Moridin920 posted:So again how is that an argument that CA sucks? did u know republicans freed the slaves and democrats were the confederates
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Feb 14, 2017 20:57
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Moridin920 posted:lmao you people will just latch onto anything as evidence that CA sucks while your state fellates rich people and cuts education california is definitely on the Not Cool list now that i know you live there
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Feb 14, 2017 20:58
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GBS regulars, please explain this guy
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Feb 14, 2017 21:02
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a bone to pick posted:some posters that are too retarded for even D&D spend their time arguing politics in GBS oh wait i remember this guy getting run out of d&d and getting mad about it lol
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Feb 14, 2017 21:10
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show me on the doll where Kansas touched you
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Feb 14, 2017 21:18
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my california story: once i was on a business trip to san diego. my client was in a low rise office plaza that had a very nice open air atrium with a tree and other plants, like if your office opened to an indoor garden. anyway as i was leaving i noticed a sign on the window that said WARNING: THIS AREA CONTAINS CHEMICALS KNOWN BY THE STATE OF CALIFORNIA TO CAUSE CANCER at my hotel, in the lobby, for no reason at all, there was a sign on the wall that said WARNING: DRINKING DURING PREGNANCY CAUSES BIRTH DEFECTS. the hotel did not serve alcohol and there was no expectation that anyone would be sitting in the lobby drinking so, california is the land of obnoxious nanny state warning signs thanks and god bless
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Feb 14, 2017 21:27
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Guy Goodbody posted:Who said that California sucks? People are just saying it's not the glorious city on a hill you think it is. California is not that much better than the rest of America. los angeles is basically atlanta, dallas, and houston all stuck together the bay area is an exclusive liberal enclave and their rents are soaring because the aging hippies who locked in home ownership back in the 1970s dont want to change or let anyone new move in to the area everywhere else is basically oklahoma
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Feb 14, 2017 21:30
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