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California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed

 
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
789.91!
 Quoting: Anonymous Coward 82912660


UP 2.97 FT. LAST 24 HRS..FINALLY DROPPED BELOW 3 FT. STILL IS
A CONCERN. 800 FT. B4 MONDAY! PROB. SUNDAY.
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
10,326...WHEN WAS THE LAST BELOW 10 K READING?
Crunch62

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01/18/2023 04:15 PM

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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
The massive snowpack in the Sierra is the elephant in the room.
 Quoting: Crunch62


EVAPORATION WONT SAVE IT THIS TIME. IF THERE IS A FAST HOT AN
EARLY SPRING WITH SOME MORE SHOWERS...ITZ OVUH. EL BREACH-0!UH
 Quoting: Anonymous Coward 82912660


Yeah, they built that community of Plumas Lake at the exact spot the levee broke in 1997.

Million dollar homes. How soon they forget.
 Quoting: Crunch62


ANY CAMERAS ON THE WET SPOT?

WERE TWENTY FEET UP IT NOW..PROB. ABOVE IT..RIGHT? NEW DATA UH
SHOON.
 Quoting: Anonymous Coward 82912660


No cameras on the wet spot. It is all wet now.

Nice story from 1997. Exactly where "Plumas Lake" is now.

[link to www.kcra.com (secure)]
What the Hell?...
Anonymous Coward
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01/18/2023 04:24 PM
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
9800 AT MIDNIGHT WHEN THE 4TH BECAME THE 5TH OF JAN. SO, RIGHT
ABOUT TWO FULL WEEKS OF BEING OVER 10K INFLOWS. CONSTANTLY. UH
Anonymous Coward
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01/18/2023 04:26 PM
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
The massive snowpack in the Sierra is the elephant in the room.
 Quoting: Crunch62


EVAPORATION WONT SAVE IT THIS TIME. IF THERE IS A FAST HOT AN
EARLY SPRING WITH SOME MORE SHOWERS...ITZ OVUH. EL BREACH-0!UH
 Quoting: Anonymous Coward 82912660


Yeah, they built that community of Plumas Lake at the exact spot the levee broke in 1997.

Million dollar homes. How soon they forget.
 Quoting: Crunch62


ANY CAMERAS ON THE WET SPOT?

WERE TWENTY FEET UP IT NOW..PROB. ABOVE IT..RIGHT? NEW DATA UH
SHOON.
 Quoting: Anonymous Coward 82912660


capslock-1
Anonymous Coward
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
THE POWUH OF THREAD PROMOTION...UH
Prayandprepare000

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01/18/2023 04:50 PM
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
I'll be glad if we make it to summer and the atmospheric rivers stop and snow melts and the dam is fine. Its the uncertainty that is just so gripping.

Not to be repetitious but you never know.( page 1456 this thread, if the links don't carry over).

Don Colson, a former engineer at DWR, told NBC Bay Area that the green spot on the face of the Oroville Dam could be a sign that the phreatic surface is already leaking internally through the face of the dam. If the phreatic surface comes out at the wrong place and the wrong speed, it could erode the structure from the inside, and if enough force is created, it could wash away the entire dam.


**********

not posting, so I'm taking out links. Easy to find on a search.

"Do not try to ignore persistent 'wet spots' in the nation's tallest embankment dam," Bea said to xxx. "Do not try to explain them away using 'trite explanations' like 'all dams have leaks' or 'it is a natural spring.' This dam is an extremely important part of our California water supply infrastructure system. If this dam failed catastrophically during high water in the reservoir, there would be significant deaths and injuries, loss of property and productivity, and damage to the environment."

*****************

We recently spoke to Bea about his findings. The conversation has been edited and condensed for clarity.

CALIFORNIA: You investigated some of the nation’s most spectacular disasters, including Hurricane Katrina, Deepwater Horizon, and the Challenger space shuttle. How would a major breach at Oroville compare to those incidents? And is such a failure even possible?

Bea: Yes, it is possible. And it would be worse than any of them. A breach at Oroville would send a wall of water down the Feather River, through the Sacramento Valley and ultimately into the Sacramento/San Joaquin Delta. It would destroy towns along the Feather and Sacramento Rivers, flood major portions of Sacramento, and blow out levees throughout the Delta, permanently flooding much of the region. The huge government pumps near Tracy that send water to Southern California cities and farms would be incapacitated. There would be tremendous loss of life and property, and it would be years before a permanent water delivery system to the south state could be reestablished.

Furthermore, it wouldn’t necessarily take a tremendous amount of rain and uncontrolled releases as we saw in February to trigger such a failure. It could happen on a bright, sunny summer’s day. The situation is that serious.
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01/18/2023 04:56 PM
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
I'll be glad if we make it to summer and the atmospheric rivers stop and snow melts and the dam is fine. Its the uncertainty that is just so gripping.

Not to be repetitious but you never know.( page 1456 this thread, if the links don't carry over).

Don Colson, a former engineer at DWR, told NBC Bay Area that the green spot on the face of the Oroville Dam could be a sign that the phreatic surface is already leaking internally through the face of the dam. If the phreatic surface comes out at the wrong place and the wrong speed, it could erode the structure from the inside, and if enough force is created, it could wash away the entire dam.


**********

not posting, so I'm taking out links. Easy to find on a search.

"Do not try to ignore persistent 'wet spots' in the nation's tallest embankment dam," Bea said to xxx. "Do not try to explain them away using 'trite explanations' like 'all dams have leaks' or 'it is a natural spring.' This dam is an extremely important part of our California water supply infrastructure system. If this dam failed catastrophically during high water in the reservoir, there would be significant deaths and injuries, loss of property and productivity, and damage to the environment."

*****************

We recently spoke to Bea about his findings. The conversation has been edited and condensed for clarity.

CALIFORNIA: You investigated some of the nation’s most spectacular disasters, including Hurricane Katrina, Deepwater Horizon, and the Challenger space shuttle. How would a major breach at Oroville compare to those incidents? And is such a failure even possible?

Bea: Yes, it is possible. And it would be worse than any of them. A breach at Oroville would send a wall of water down the Feather River, through the Sacramento Valley and ultimately into the Sacramento/San Joaquin Delta. It would destroy towns along the Feather and Sacramento Rivers, flood major portions of Sacramento, and blow out levees throughout the Delta, permanently flooding much of the region. The huge government pumps near Tracy that send water to Southern California cities and farms would be incapacitated. There would be tremendous loss of life and property, and it would be years before a permanent water delivery system to the south state could be reestablished.

Furthermore, it wouldn’t necessarily take a tremendous amount of rain and uncontrolled releases as we saw in February to trigger such a failure. It could happen on a bright, sunny summer’s day. The situation is that serious.

 Quoting: Prayandprepare000


THIS THING COULD JUST 'BREACH' FROM WHAT IS HAPPENING INSIDE
IT. AND THE DRY SPELL AND NOW FAST RE-FILL IS THE WORST CASE
SCENARIO. I CANT BELIEVE THEY WILL LET IT GET UP TO 800+ AN
BEYOND.
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
790.02
Anonymous Coward
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
THE POWUH OF THREAD PROMOTION...UH
 Quoting: Anonymous Coward 82912660


2.93 FEET UP IN LAST 24 WHORES.
Anonymous Coward
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
HEY...LOOKS LIKE PRETTY NASTY WEATHER FROM 5 PM UNTIL SUNRISE!

ONE LAST BLAST OF RAIN..NUMBUHS WILL GO BACK UP. THEN 10 DAYS
OFF.
Anonymous Coward
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01/18/2023 05:13 PM
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HEY...LOOKS LIKE PRETTY NASTY WEATHER FROM 5 PM UNTIL SUNRISE!

ONE LAST BLAST OF RAIN..NUMBUHS WILL GO BACK UP. THEN 10 DAYS
OFF.
 Quoting: Anonymous Coward 82912660


12,609 BACK UP!
Anonymous Coward
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
790.15
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2.94 IN LAST 24 HRS..

15,792!
Anonymous Coward
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01/18/2023 06:23 PM
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
I'll be glad if we make it to summer and the atmospheric rivers stop and snow melts and the dam is fine. Its the uncertainty that is just so gripping.

Not to be repetitious but you never know.( page 1456 this thread, if the links don't carry over).

Don Colson, a former engineer at DWR, told NBC Bay Area that the green spot on the face of the Oroville Dam could be a sign that the phreatic surface is already leaking internally through the face of the dam. If the phreatic surface comes out at the wrong place and the wrong speed, it could erode the structure from the inside, and if enough force is created, it could wash away the entire dam.


**********

not posting, so I'm taking out links. Easy to find on a search.

"Do not try to ignore persistent 'wet spots' in the nation's tallest embankment dam," Bea said to xxx. "Do not try to explain them away using 'trite explanations' like 'all dams have leaks' or 'it is a natural spring.' This dam is an extremely important part of our California water supply infrastructure system. If this dam failed catastrophically during high water in the reservoir, there would be significant deaths and injuries, loss of property and productivity, and damage to the environment."

*****************

We recently spoke to Bea about his findings. The conversation has been edited and condensed for clarity.

CALIFORNIA: You investigated some of the nation’s most spectacular disasters, including Hurricane Katrina, Deepwater Horizon, and the Challenger space shuttle. How would a major breach at Oroville compare to those incidents? And is such a failure even possible?

Bea: Yes, it is possible. And it would be worse than any of them. A breach at Oroville would send a wall of water down the Feather River, through the Sacramento Valley and ultimately into the Sacramento/San Joaquin Delta. It would destroy towns along the Feather and Sacramento Rivers, flood major portions of Sacramento, and blow out levees throughout the Delta, permanently flooding much of the region. The huge government pumps near Tracy that send water to Southern California cities and farms would be incapacitated. There would be tremendous loss of life and property, and it would be years before a permanent water delivery system to the south state could be reestablished.

Furthermore, it wouldn’t necessarily take a tremendous amount of rain and uncontrolled releases as we saw in February to trigger such a failure. It could happen on a bright, sunny summer’s day. The situation is that serious.

 Quoting: Prayandprepare000


THIS THING COULD JUST 'BREACH' FROM WHAT IS HAPPENING INSIDE
IT. AND THE DRY SPELL AND NOW FAST RE-FILL IS THE WORST CASE
SCENARIO. I CANT BELIEVE THEY WILL LET IT GET UP TO 800+ AN
BEYOND.
 Quoting: Anonymous Coward 82912660


capslock-1
Anonymous Coward
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01/18/2023 06:36 PM
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
THE POWUH OF THREAD PROMOTION...UH
 Quoting: Anonymous Coward 82912660
Anonymous Coward
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01/18/2023 06:58 PM
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
And yet, the dam dam remains fine…

GLP AFFECT IN EFFECT

14 k inflows wont even replace evap!!
lolmygod!

What thread do the orotard fixate on in summer drought seasons???

you guys realize CA seather is back tomperfect, warm sunshine normal riiiiiiiiiiiiggt?

K I E W I T!!!

on time

under budget

3 digit contractor, the real workers behind the woke, diversity hire false front of Caltrans

(there has to some competence behind governments….)
Anonymous Coward
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you cant see wet spots when she’s wet…
Anonymous Coward
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
farmers in Tracy, piss, dump meskin honey buckets, used motor oul and anything else they can think to send to LA right at those stupid pumps.

Didja know that those irrigation pumps use the lions share of all power consumed in CA! Just so LA can breed tyrd worlders, crime and toxic media pollution…
Anonymous Coward
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
farmers in Tracy, piss, dump meskin honey buckets, used motor oul and anything else they can think to send to LA right at those stupid pumps.

Didja know that those irrigation pumps use the lions share of all power consumed in CA! Just so LA can breed tyrd worlders, crime and toxic media pollution…
 Quoting: Anonymous Coward 80365335


It's true. DWR with those lift pumps is PG&E's biggest customer.
Anonymous Coward
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
you cant see wet spots when she’s wet…
 Quoting: Anonymous Coward 80365335


sometimes you can SMELL BUT, THAT IS A RISKY RIDE.
Anonymous Coward
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790.27

16,643
Anonymous Coward
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2.92 LAST 24 WHORES...BUT, IT WILL GET BACK UP TO 3.0 SHOON!UH
Prayandprepare000

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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
Hey AC 335 Kiewit On Time Under Budget....

Sorry no link. GLP bans most of those little CA papers, I think they are snarky about copyrights. You can always do a search with the text.

OROVILLE — The cost of repairing the crippling damage to Oroville Dam’s spillways caused by last winter’s fierce storms has almost doubled, state water officials said Thursday.

Kiewit, the Nebraska-based construction firm that has the main contract to rebuild the main spillway and emergency spillway at Oroville, the nation’s tallest dam, estimated in its winning bid in April that the work would cost at least $275 million. But the price tag has now grown to at least $500 million, said Erin Mellon, a spokeswoman for the Department of Water Resources.


****************

Cost Estimate Update: As work continues to meet the November 1, 2018 public safety construction milestone to fully reconstruct the main spillway, DWR has updated its cost estimates. The current estimate for emergency response and reconstruction of the main and emergency spillways is $1.1 billion. Cost estimates are based on actual and projected work and may be adjusted further as work continues through completion of the project in 2019.

FROM $275 MILLION TO 1.1 BILLION.....under budget, oh yeah. Our resident AC is an idiot.

You have to wonder how much of that was pure corruption.

Last Edited by Prayandprepare000 on 01/18/2023 08:34 PM
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
790.36

INFLOWS 14K!
PavewayIV

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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
...

Don Colson, a former engineer at DWR, told NBC Bay Area that the green spot on the face of the Oroville Dam could be a sign that the phreatic surface is already leaking internally through the face of the dam. If the phreatic surface comes out at the wrong place and the wrong speed, it could erode the structure from the inside, and if enough force is created, it could wash away the entire dam.

...

"Do not try to ignore persistent 'wet spots' in the nation's tallest embankment dam," Bea said to xxx. "Do not try to explain them away using 'trite explanations' like 'all dams have leaks' or 'it is a natural spring.' This dam is an extremely important part of our California water supply infrastructure system. If this dam failed catastrophically during high water in the reservoir, there would be significant deaths and injuries, loss of property and productivity, and damage to the environment."

...

 Quoting: Prayandprepare000


Pretty sure they doused the wet spot with RoundUp a couple of years ago so people wouldn't be alarmed. Moisture/vegetation creeping out again from left shoulder (looking downstream) of dam face. Fines in soil should be uniform across/up and down dam face, regardless of layered phases of construction. That shouldn't affect uniformity of dam face soil.

You shouldn't be able to see 'layers' from construction because they should all have been well buried by face fill when dam was completed. Green bands/spot can ONLY be caused by soil fines being washed out/pushed through dam face. Face surface erosion would produce vertical bands, not horizontal ones. There is significant surface erosion just below wet spot, but this detail wouldn't be very visible from satellite imagery.

Nothing interesting/different about latest imagery besides intensity (bright green spot) of vegetation rendering. Prolonged recent rains shouldn't have mattered. Some vegetation always grows on dam face during winter rains. It's the uneven nature of that growth that's a red flag.

DWR has continuously claimed awareness of the green spot and dismisses any concern about it. They supposedly sank a monitoring well on the left shoulder uphill of green spot, but never said much about it besides 'natural spring'. Note: the drain curtain inside the middle of the dam should take care of any water intrusion from the shoulder. It extends all the way to either end of the dam, including over/beyond the left shoulder green spot.

I guess there's a remote chance that the shoulder's 'natural spring' empties closer to the face of the dam than it does to the core. DWR has no way of knowing what vertical region(s) of the drain curtain may be plugged/compromised, so it seems improbable that they can determine with any certainty that there is no safety concern here. If the dam ever fails on the left shoulder, then they will have a lot of explaining to do (to taxpayers and downstream survivors).

Nice to know the largest earth-fill dam in the U.S. has a natural spring saturating its face in a region of uneven settlement. What could possible go wrong?



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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
...

Don Colson, a former engineer at DWR, told NBC Bay Area that the green spot on the face of the Oroville Dam could be a sign that the phreatic surface is already leaking internally through the face of the dam. If the phreatic surface comes out at the wrong place and the wrong speed, it could erode the structure from the inside, and if enough force is created, it could wash away the entire dam.

...

"Do not try to ignore persistent 'wet spots' in the nation's tallest embankment dam," Bea said to xxx. "Do not try to explain them away using 'trite explanations' like 'all dams have leaks' or 'it is a natural spring.' This dam is an extremely important part of our California water supply infrastructure system. If this dam failed catastrophically during high water in the reservoir, there would be significant deaths and injuries, loss of property and productivity, and damage to the environment."

...

 Quoting: Prayandprepare000


Pretty sure they doused the wet spot with RoundUp a couple of years ago so people wouldn't be alarmed. Moisture/vegetation creeping out again from left shoulder (looking downstream) of dam face. Fines in soil should be uniform across/up and down dam face, regardless of layered phases of construction. That shouldn't affect uniformity of dam face soil.

You shouldn't be able to see 'layers' from construction because they should all have been well buried by face fill when dam was completed. Green bands/spot can ONLY be caused by soil fines being washed out/pushed through dam face. Face surface erosion would produce vertical bands, not horizontal ones. There is significant surface erosion just below wet spot, but this detail wouldn't be very visible from satellite imagery.

Nothing interesting/different about latest imagery besides intensity (bright green spot) of vegetation rendering. Prolonged recent rains shouldn't have mattered. Some vegetation always grows on dam face during winter rains. It's the uneven nature of that growth that's a red flag.

DWR has continuously claimed awareness of the green spot and dismisses any concern about it. They supposedly sank a monitoring well on the left shoulder uphill of green spot, but never said much about it besides 'natural spring'. Note: the drain curtain inside the middle of the dam should take care of any water intrusion from the shoulder. It extends all the way to either end of the dam, including over/beyond the left shoulder green spot.

I guess there's a remote chance that the shoulder's 'natural spring' empties closer to the face of the dam than it does to the core. DWR has no way of knowing what vertical region(s) of the drain curtain may be plugged/compromised, so it seems improbable that they can determine with any certainty that there is no safety concern here. If the dam ever fails on the left shoulder, then they will have a lot of explaining to do (to taxpayers and downstream survivors).

Nice to know the largest earth-fill dam in the U.S. has a natural spring saturating its face in a region of uneven settlement. What could possible go wrong?




 Quoting: PavewayIV


YO! YOU HAVE BROUGHT THE REAL SHIT HERE..THANK YOU. DAM HAS
NATURAL SPRING..GREAT. AND THAT IS THE BEST CASE ANSWER THEY
HAVE GOT. DARKER COLOR IS A NUTRIENT SUPPLY OF WATER, RIGHT?
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Re: California's Lake Oroville Main Spillway Severly Damaged/Eroded. Oroville Dam's Recently Reconstructed Main Spillway Fundamentally Flawed
790.48
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790.48
 Quoting: Anonymous Coward 3859778


14,403
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[link to cdec.water.ca.gov (secure)]

Inflows back up to 12k. 716.89
 Quoting: Anonymous Coward 83635896


1/5 4PM EST 1PM PST.
 Quoting: Anonymous Coward 85093333





GLP