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Emergency: California’s Oroville Dam Spillway Near Failure, Evacuations Ordered
Breitbart ^ | Feb 12, 2017 | Joel B. Pollak1

Posted on 02/12/2017 4:26:47 PM PST by janetjanet998

Edited on 02/12/2017 9:33:58 PM PST by Admin Moderator. [history]

click here to read article


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To: EarthResearcher333

Yes. People in general and those who have worked hard to enter a profession like in the field of engineering or science, want to contribute and do a stellar job. My issue is the bigger the government, 1) the more corrupt, and 2) the harder for individuals to do a good job.


2,201 posted on 03/03/2017 12:50:30 PM PST by Jim W N
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To: EarthResearcher333

Thanks for the reply, plus your very valuable information and analysis.


2,202 posted on 03/03/2017 2:05:02 PM PST by EternalHope (Something wicked this way comes. Be ready.)
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To: All

looks like they got a 2nd generator going
outflow now 2300


2,203 posted on 03/03/2017 2:20:11 PM PST by janetjanet998
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To: janetjanet998

Excellent. 2 generators.

I wish that the plant could move more water, like about 30-50 thousand cf/s.


2,204 posted on 03/03/2017 2:45:51 PM PST by meyer (The Constitution says what it says, and it doesn't say what it doesn't say.)
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To: meyer

Sacramento Bee article about generators...

http://sacramento.cbslocal.com/2017/03/03/1-of-6-turbines-restarted-at-oroville-dam/

As noted in the “sandbagged wall” image, 1 of the 6 is out of service. That might explain the discrepancy between the published cfm and the 14,500 that they expect to achieve at the plant. They expect to reach 3000 cfm by the end of the day.


2,205 posted on 03/03/2017 5:00:15 PM PST by meyer (The Constitution says what it says, and it doesn't say what it doesn't say.)
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To: meyer

the pattern has the potential to turn very wet again about a week from now

this weekend a cool moderate storm

of course thy will have to use the main spillway again..there is no “if” about it

I wonder what substance they can spray on that huge hillside to prevent Erosion or is it just BS?

also they admitted the obvious..... things won’t be back to normal next year either


He said crews will spray a substance on the hillside to limit further erosion if the spillway is used.

As the spillway is reinforced and the situation gets less dire, engineers will begin transitioning from the emergency response to planning a permanent fix, Croyle said. It will likely take several weeks for officials to develop options for a long-term solution, which may include a temporary fix for next winter.


2,206 posted on 03/03/2017 5:42:09 PM PST by janetjanet998
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To: janetjanet998

all
3-3 update

https://www.youtube.com/watch?v=zWNwBm9uwJI


2,207 posted on 03/03/2017 5:53:08 PM PST by janetjanet998
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To: janetjanet998

I don’t know what they can spray on the hillside to prevent erosion. Seems to me, that area right were the good section of the spillway ends is VERY vulnerable, and the first transmission line tower is vulnerable.

As it will take a while to get the spillway fixed, a very long while, I would think that they would want a spillway contingency plan so that they can use what’s left of what they have now until they at least get through the melt season.

I readily admit that I don’t know what all they have up their sleeve, but I see a coming situation where incoming exceeds outgoing for a while and they’ll HAVE to use the spillway again.


2,208 posted on 03/03/2017 5:55:09 PM PST by meyer (The Constitution says what it says, and it doesn't say what it doesn't say.)
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To: janetjanet998

Thanks for the link, JJanet. Shotcrete is basically concrete. I wonder if they’re going to use rocks also, or just the concrete. If they harden the area below the spillway, they can probably flow some water with very little erosion because they’re down to bedrock in a lot of that path.


2,209 posted on 03/03/2017 5:59:16 PM PST by meyer (The Constitution says what it says, and it doesn't say what it doesn't say.)
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To: meyer

His concern about eroding under the spillway at low flow levels is very valid. When they dropped to 30,000 the other day, it started pushing mud looking water down the hill again. Which means that it was undermining the end of the spillway.

Good video.


2,210 posted on 03/03/2017 6:04:14 PM PST by meyer (The Constitution says what it says, and it doesn't say what it doesn't say.)
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To: KC Burke; Ernest_at_the_Beach

Info on snowpack

http://www.freerepublic.com/focus/f-news/3531286/posts?page=1#1

H/t Ernest_at_the_beach


2,211 posted on 03/03/2017 9:31:24 PM PST by WildHighlander57 ((WildHighlander57, returning after lurking since 2000)
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To: abb; Grampa Dave; Jim 0216; maggief; Mariner; Ray76; daisy12; janetjanet998; LucyT; Yaelle; ...
I don’t know what they can spray on the hillside to prevent erosion. (Re: exposed upper main spillway rockface)

Here is one possibility.. It's a technique where mesh is bolted up above in hold points with the mesh draping over the rock face. Then they "shotcrete" the rock & mesh. I don't know if I'd volunteer to bolt the mesh under those overhanging slabs..



2,212 posted on 03/04/2017 1:54:51 AM PST by EarthResearcher333
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To: EarthResearcher333

Thanks for that image. It says what a thousand words could not!


2,213 posted on 03/04/2017 5:09:04 AM PST by meyer (The Constitution says what it says, and it doesn't say what it doesn't say.)
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To: meyer

River bank concerns downstream from the Dam. Apparently, the abrupt reduction of water has caused some river banks to collapse due to the lack of water pressure holding up the wet ground.

http://www.sfchronicle.com/bayarea/article/Riverbanks-collapse-after-Oroville-Dam-spillway-10976144.php


2,214 posted on 03/04/2017 8:31:41 AM PST by meyer (The Constitution says what it says, and it doesn't say what it doesn't say.)
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To: meyer; abb; Grampa Dave; Jim 0216; maggief; Mariner; Ray76; daisy12; janetjanet998; LucyT; ...

From your link:

When state water officials scaled back their mass dumping of water from the damaged Oroville Dam this week, they knew the riverbed below would dry up enough to allow the removal of vast piles of debris from the fractured main spillway.

But they apparently did not anticipate a side effect of their decision to stop feeding the gushing Feather River — a rapid drop in river level that, according to downstream landowners, caused miles of embankment to come crashing down.

With high water no longer propping up the shores, the still-wet soil crashed under its own weight, sometimes dragging in trees, rural roads and farmland, they said.

“The damage is catastrophic,” said Brad Foster, who has waterfront property in Marysville (Yuba County), about 25 miles south of Lake Oroville.


2,215 posted on 03/04/2017 8:56:35 AM PST by maggief
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To: maggief

UNFREAKINBELIEVABLE! !!!


2,216 posted on 03/04/2017 9:54:51 AM PST by SE Mom (Screaming Eagle mom)
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To: maggief

The damage may be more catastrophic if the powerhouse spillways are not operating. Every drop of water through the powerhouse is one less to go down the main spillway, which is in a precarious state.


2,217 posted on 03/04/2017 10:18:48 AM PST by Ray76 (DRAIN THE SWAMP)
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To: All

outflow at ZERO again


2,218 posted on 03/04/2017 11:09:35 AM PST by janetjanet998
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To: Ray76

unconfirmed............

hearing reports on social media that part of the mountain side gave way and caused the powerplant to fill with debris
the are trying to clear it

0 outflow at this time


2,219 posted on 03/04/2017 11:26:08 AM PST by janetjanet998
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To: All

they sent divers into the lake side of the main spillway to seal the leaks..I assume if they open it again it will have to be resealed...or can it even be opened sealed?


2,220 posted on 03/04/2017 11:32:02 AM PST by janetjanet998
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