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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]

The California Department of Water Resources issued a sudden evacuation order shortly before 5 p.m. Sunday for residents near the Oroville Dam in northern California, warning that the dam’s emergency spillway would fail in the next 60 minutes.

The Oroville Dam is the highest in the nation.


TOPICS: Breaking News; News/Current Events; US: California
KEYWORDS: butte; california; dam; dwr; evacuation; lakeoroville; liveoroville; moonbeamcanyon; moonbeammadness; oroville; orovilledam; orovillelive; runaway; spillway; sutter; water; yuba
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To: maggief

Dumb question.. why are they cutting power lines?


1,221 posted on 02/17/2017 1:21:31 PM PST by pnz1 (#IMNOTWITHHER *not gonna march in a ridiculous hat either)
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To: pnz1

Apparently to get the lines out of the way for some heavy equipment to conduct planned repairs


1,222 posted on 02/17/2017 1:23:12 PM PST by leakinInTheBlueSea
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To: SE Mom
Does this make any sense? Highlighted figures are inflow. (Scanner: cutting back to 75,000 outflow.)

02/17/2017 11:00 860.07 2945720 79823 35530 92287 35.84 13.4
02/17/2017 12:00 859.75 2941283 79860 34819 92498 35.88 13.4
02/17/2017 13:00 859.30 2935052 79574 14683 92531 35.92 13.4

1,223 posted on 02/17/2017 1:23:19 PM PST by maggief
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To: maggief

The Wx radar looked like there was a break between successive bands of rain, so maybe so.


1,224 posted on 02/17/2017 1:24:52 PM PST by leakinInTheBlueSea
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To: maggief

Typo ?
Hard to imagine a 20k reduction in an hour.


1,225 posted on 02/17/2017 1:27:26 PM PST by tomkat
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To: pnz1

Not sure.

Check the pics in post 1216. Is the tower in jeopardy?

There are also cutting back outflow to 75,000


1,226 posted on 02/17/2017 1:27:52 PM PST by maggief
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To: maggief

It’s related to real time rainfall, but it’s also related to water releases upstream. I’m with TVA - we have a river system and there is a timing factor to releasing water upstream and when it arrives at the next dam down the river. For example (and this is purely hypothetical, since I don’t have raw numbers in front of me), if TVA releases 100,000 cubic feet from, say, Guntersville Dam, it will be maybe 3 or 4 hours before that increased flow reaches the next dam downstream.

So in this case, they may have released water hours ago and that water got to Oroville and has since backed off because that particular volume of release has terminated. The number will go up and down, but on average, will be higher through and after the rain period.


1,227 posted on 02/17/2017 1:30:48 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: leakinInTheBlueSea
Oroville Weather Radar. Lot of yellow and orange.
1,228 posted on 02/17/2017 1:31:39 PM PST by Gideon7
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To: maggief

Scanner:

Spill coming out of main spillway.
Ask for extra vigilance in monitoring.


1,229 posted on 02/17/2017 1:37:51 PM PST by maggief
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To: meyer
Not trying to be argumentative, but hasn't that ~35k inflow rate been relatively constant for awhile ?

The maps I'm seeing aren't showing any .. are there any dams upstream of Oroville that would be affecting its reservoir level ?


(disclaimer: i'm in PA and unfamiliar with CA other than being glad i'm not out there  ;-)

1,230 posted on 02/17/2017 1:47:57 PM PST by tomkat
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To: maggief

Is that bottom photo today?


1,231 posted on 02/17/2017 1:57:10 PM PST by SE Mom (Screaming Eagle mom)
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To: maggief

WTH??

Is that in prep for cutting power?


1,232 posted on 02/17/2017 1:59:33 PM PST by SE Mom (Screaming Eagle mom)
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To: meyer; maggief; All
May have answered my own question .. finally found a map that's helpful:

             

[click map for source page .. red dots are clickable and have info]

1,233 posted on 02/17/2017 2:02:36 PM PST by tomkat
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To: Gideon7

Yup... there was a pause a few hours ago... not sure of the lag between rain and inflow though.


1,234 posted on 02/17/2017 2:08:11 PM PST by leakinInTheBlueSea
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To: maggief

Maggie, that new flow of muddy water isn’t
cheering me up.

Now Sean is back live from Oroville.


1,235 posted on 02/17/2017 2:13:33 PM PST by SE Mom (Screaming Eagle mom)
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To: maggief

What is the brown stream of water down the side of hill to left of the spillway coming from??? Any commentary mentioning that?


1,236 posted on 02/17/2017 2:15:50 PM PST by boxlunch (Pray for Donald Trump's safety, for his family and cabinet. Make America Good Again!)
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To: tomkat; leakinInTheBlueSea

Daily Rainfall and Reservoir Level
https://apps.axibase.com/chartlab/dee79515/7/#fullscreen

Daily Reservoir Level
https://apps.axibase.com/chartlab/dee79515#fullscreen

Background
https://github.com/axibase/atsd-use-cases/blob/master/OrovilleDam/README.md

h/t leakinInTheBlueSea


1,237 posted on 02/17/2017 2:16:17 PM PST by Ray76 (DRAIN THE SWAMP)
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To: tomkat

It has been in the upper 20,000 to mid 30,000 range. I think I saw 18,000 yesterday. 14 seems low, given the rain situation. But it could be a bad reading too.


1,238 posted on 02/17/2017 2:19:54 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

all of those trenches they filled below the emergency spillway are going to now erode DEEPER on each side of the rock piles they put in place. I don’t know why they shut the water flow thru the turbines as well... they should have left some water flowing thru them if not fully open.


1,239 posted on 02/17/2017 2:21:14 PM PST by sit-rep
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To: meyer; Ray76
Thanks  :-)
1,240 posted on 02/17/2017 2:27:48 PM PST by tomkat
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