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The Oroville Dam Failure
Linkedin ^ | February 10, 2017 | Scott Cahill

Posted on 02/12/2017 6:49:25 PM PST by artichokegrower

I have heard that the emergency spillway is eroding through cutback. This will be an evolutionary erosive failure. It will take some time for the cut back. Hopefully the erosion will be stopped at bedrock, However, I fear that if the erosion of the emergency spillway, on the canted bedrock of the abutment communicates with the hydraulics of the principal spillway, this may result in a V notch failure. This would be the most serious type of failure.

(Excerpt) Read more at linkedin.com ...


TOPICS: Culture/Society; US: California
KEYWORDS: california; dam; lakeoroville; oroville; orovilledam; watersupply
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To: Louis Foxwell

Quick... print the Trillion dollars! It’s for the children! The women! Is it even remotely possible CA is about to set up the infrastructure scam? Maybe using the data experts needing extra cash from climategate? I thought CA was ready to soar alone..
Seems a bit suspicious that suddenly there is a problem. So let’s work a deal.. No sanctuary cities ever, put Rhamn out on the street, and fix CA voter fraud, then maybe we can work something out.
More shovel ready jobs.


81 posted on 02/13/2017 6:36:31 AM PST by momincombatboots (Pray for Sky, 20, two gunshots to abdomen, college student, hostess, easy prey n transformed US)
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To: Daniel Ramsey

The first part of that chopper footage gives a vantage we have not had in other video and it shows a much much wider area of overtopping and run off erosion from the emergency spillway than anything else we have seen.

Just damn - dam.


82 posted on 02/13/2017 6:46:17 AM PST by KC Burke (Consider all of my posts as first drafts. (Apologies to L. Niven))
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To: maggief; SE Mom

Maggief,

Thanks for this link:

https://www.liveleak.com/view?i=08c_1486958413

Shows the reality of it, and the danger.


83 posted on 02/13/2017 6:50:39 AM PST by WildHighlander57 ((WildHighlander57, returning after lurking since 2000)
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To: SE Mom

At 0:21 you see the water coming over the dirt to the —left— of the weir.

Just dirt...

Prayers UP!!!


84 posted on 02/13/2017 6:53:27 AM PST by WildHighlander57 ((WildHighlander57, returning after lurking since 2000)
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To: WildHighlander57

It’s just amazing to watch this. Years of muddled, mistaken, and liberal thought have combined to bring this moment.

Lessons abound for willing students.


85 posted on 02/13/2017 7:16:32 AM PST by SE Mom (Screaming Eagle mom)
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To: KC Burke
Perhaps 'repair' is too strong a word.

But they have to keep the spillway above the hole from failing by being undercut by the water.

86 posted on 02/13/2017 8:05:58 AM PST by mrsmith (Dumb sluts: Lifeblood of the Media, Backbone of the Democrat/RINO Party!)
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To: mrsmith

Nothing 48 hours of drying and prep followed by 120,000 1/3 cubic yard helicopter delivered buckets of high-early ready mix concrete on top of 500 gabions of one foot diameter rip-rap couldn’t take care of in a heartbeat.

Only problem is that those buckets at one every 30 seconds would take one thousand hours to drop in place.


87 posted on 02/13/2017 8:30:13 AM PST by KC Burke (Consider all of my posts as first drafts. (Apologies to L. Niven))
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To: GreyFriar

Thanks for the link.


88 posted on 02/13/2017 9:45:16 AM PST by zot
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To: artichokegrower

http://www.freerepublic.com/focus/f-news/3513231/posts

Two months ago, I was wondering why they were letting California reservoirs get so full. I was focusing on Lake Shasta, since it was the biggest, but Lake Oroville was right behind it.


89 posted on 02/13/2017 11:16:59 AM PST by dangus
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To: jcon40

does anyone have a link for dam inundation area map for lake oroville?


90 posted on 02/13/2017 11:56:33 AM PST by WayneLusvardi (It's more complex than it might seem)
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To: WayneLusvardi; steve86

There’s one on the large thread posted by FReeper steve86.


91 posted on 02/13/2017 11:58:08 AM PST by RegulatorCountry
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To: WayneLusvardi

http://freerepublic.com/focus/news/3524221/posts?page=467#467


92 posted on 02/13/2017 11:59:06 AM PST by RegulatorCountry
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To: RegulatorCountry

thankee

do you also have link to the map showing the inundation by hours


93 posted on 02/13/2017 12:17:37 PM PST by WayneLusvardi (It's more complex than it might seem)
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To: thinkliberty64

It depends on the purpose of the dam, if it is hydro electric or water reservoir only. Other factors are storm flow/snow pack modeling when originally designed. Snow pack melt is trickier because it may come off all at once if temperatures rise too fast or over a longer period of time if temperatures rise more slowly.

The emergency spillway should have been designed at an elevation and width that would have prevented the extreme stresses on the dam structure which would lead to catastrophic failure.


94 posted on 02/13/2017 12:19:55 PM PST by shotgun
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To: WayneLusvardi

No, afraid not.


95 posted on 02/13/2017 12:20:01 PM PST by RegulatorCountry
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To: Proyecto Anonimo

BWAAAAHAHAHAHAHAHAHAaaaaa!!

WELL PLAYED!

Downstream 7-11 operators be on the lookout!


96 posted on 02/13/2017 4:39:49 PM PST by HKMk23 (You ask how to fight an idea? Well, I'll tell you how: with another idea!)
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To: KC Burke

1/3 cu yd sounded way too low but after researching it is a reasonable estimate for a single-rotor at that elevation.
The Ca NG has a dozen pretty new CH-47f Chinooks with a max cargo of 24,000 pounds. They may not want to get them dirty though.
There’s been no work done on either spillway today. Lake has only been lowered 8 feet.


97 posted on 02/13/2017 4:53:08 PM PST by mrsmith (Dumb sluts: Lifeblood of the Media, Backbone of the Democrat/RINO Party!)
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To: tubebender

In the wino counties, we have had highs up to 70 so far this week.

If that rain which is coming Wed/Thurs and Friday is warm, it will melt a lot of snow above the dam.

Hopefully for the families below the damn, that doesn’t happen,


98 posted on 02/13/2017 5:32:42 PM PST by Grampa Dave (Concerned trolls/NeverTrumpsters, don't know to celebrate winning as they buy into fake news!!!!)
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To: mrsmith

I just used a 1/3 yard lift bucket size because it is one of the ready made sizes tower cranes use at the end of their reach. There are bigger hoppers for bigger cranes. Helicopter lift though needs to be easily snatched over and over so I would use something that is in the range of about 1/3 of their lift capacity.


99 posted on 02/13/2017 5:42:45 PM PST by KC Burke (If all the world is a stage, I would like to request my lighting be adjusted.)
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To: Grampa Dave; tubebender

Local news tonight described the incoming storms as “somewhat warm.”


100 posted on 02/13/2017 5:52:35 PM PST by daisy12
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