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  #1  
Old 28th February 2017, 05:51 AM
djl47 Offline
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Oroville Dam Spillway Collapse

California Department of Water Resources shut the spillway down today after the lake was lowered sixty feet below max capacity. With the spillway shut down the damage is visible. The next task is to dredge out the debris field that is blocking the channel so they can get the powerplant running again.
https://www.youtube.com/watch?v=UyvDPt-HU3g
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Old 28th February 2017, 08:33 AM
JONOR Offline
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Re: Oroville Dam Spillway Collapse

Very revealing, glad there was no loss of life with all that hydraulic energy.
Can struggle with sense of scale, side walls look paper thin until trees by them are compared.
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Old 28th February 2017, 09:23 AM
djl47 Offline
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Re: Oroville Dam Spillway Collapse

DWR Part 2. This shows the debris field with an excavator and a Cat dwarfed by with scale of the debris field.
https://www.youtube.com/watch?v=GlSGDGTaCh0
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Old 28th February 2017, 12:19 PM
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Re: Oroville Dam Spillway Collapse

Being sent to cleanup the debris field.
http://media.oregonlive.com/pacific-...70b5b61657.jpg
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Old 28th February 2017, 06:00 PM
djl47 Offline
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Re: Oroville Dam Spillway Collapse

Quote:
Originally Posted by beaker_ View Post
Being sent to cleanup the debris field.
http://media.oregonlive.com/pacific-...70b5b61657.jpg
Be safe and prepare yourself for some long hours. I had no idea how expansive the debris flow was until I saw that caterpillar crawling across it in the second video.
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Old 28th February 2017, 07:09 PM
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Re: Oroville Dam Spillway Collapse

hmm.., perhaps I worded it poorly. I'm not going, the crew for "gold rush" is.
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Old 3rd March 2017, 07:50 AM
djl47 Offline
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Re: Oroville Dam Spillway Collapse

I had to Google that. I'm a cable cutter which often makes pop culture references go right past me.

Debris field removal
https://www.youtube.com/watch?v=IwMMKmFMp78

Local News Copter shows wider shots
https://www.youtube.com/watch?v=tJqTXThIz_o
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Old 3rd March 2017, 03:28 PM
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Re: Oroville Dam Spillway Collapse

Well, they are saying that the washed out spillway, and all areas that are getting more rain than normal, is seeing more gold being uncovered. Seems the additional rainfall is causing more of the dirt/debris/etc... to get washed away from the gold and bringing the gold up where it can be found.

So, gold rush could actually mean more than you realize.
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Old 3rd March 2017, 05:33 PM
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Re: Oroville Dam Spillway Collapse

There is a lot of expensive damage that needs repairing. Who would you get to work on the cleanup such that they work at low cost to save the state a lot of money?

ANS: The unemployed coal miners
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Old 3rd March 2017, 07:57 PM
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Re: Oroville Dam Spillway Collapse

With all that bedrock and if was to be built only once, they'll blast a slope out of that shale(?). Then their concrete spillway will be less likely to be undermined. But, they're probably heading into five more years of drought anyway?
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Old 4th March 2017, 08:37 AM
djl47 Offline
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Re: Oroville Dam Spillway Collapse

Quote:
Originally Posted by beaker_ View Post
With all that bedrock and if was to be built only once, they'll blast a slope out of that shale(?). Then their concrete spillway will be less likely to be undermined. But, they're probably heading into five more years of drought anyway?
I think it's a metamorphic rock known as gneiss. The back to back monsoon winters of 81-82 and 82-83 showed us we can have back to back wet years. California gets a well above average winter like this about every ten or so years. 1955, 1964 (That's the year that the Eel River peaked at 750,000CFS. The high water marks are still visible along the Avenue of the Giants.) 1981-1982, 1986 and 1997. I have pictures of the spillways at Nimbus (Downstream from Folsom) open back in 2008. These wet years are not the aberration. The aberration was four years in a row of well below average rain and snowfall.
Part of the problem is deferred maintenance on infrastructure. Infrastructure doesn't vote so the pols spend the money where it earns votes. Then the infrastructure breaks and everyone wants to know why it wasn't properly maintained.

Maybe a better weather gauge is what years did the railroad need the rotary plows to clear the Donner Pass route? https://www.youtube.com/watch?v=RjBQ3MaBYiU

March 2 debris removal drone video. https://www.youtube.com/watch?v=TpXtMZwpDqs
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  #12  
Old 7th March 2017, 07:32 PM
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Re: Oroville Dam Spillway Collapse

March 4th and 5th videos with a nice shot of nighttime activities.
https://www.youtube.com/watch?v=ohqUqA0E8dU

March 6th video. As of Monday morning, approximately 427,000 cubic yards of the estimated 1.7 million cubic yards of debris have been removed
https://www.youtube.com/watch?v=7LQng6jFJw4
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Old 18th March 2017, 04:14 PM
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Re: Oroville Dam Spillway Collapse

The patched up spillway gets re-opened.... with some good commentary.
https://youtu.be/kQe0J5NLLT4
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Old 19th March 2017, 01:35 AM
Doug G Offline
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Re: Oroville Dam Spillway Collapse

Thanks for the update
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Old 19th March 2017, 01:43 AM
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Re: Oroville Dam Spillway Collapse

Quote:
Originally Posted by PabloTwo View Post
The patched up spillway gets re-opened.... with some good commentary.
https://youtu.be/kQe0J5NLLT4
very very impressive
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