Oroville dam within Quarter inch of overflowing over emergency spillway

Anyone near here? I have heard the emergency spillway is in serious danger of collapse, and the collapse is going UP, not down, probably due to turbulence in the water.



I heard this an hour ago, melt water is imminent to overtop ....... anyone able to give an update

Thanks

Who did the design.....my...my

Undercut from the sidewalls letting water pump under the flat work......big mistake

Rip it all out and do another one, this time with brain engaged.

a reply to: corblimeyguvnor

Where is this?

a reply to: GBP/JPY

Too late, it seems that time is an issue here .... like the next couple of hours. Rebar and Concrete long term is not going to fix this in the short term ........ question is, what happens imminently

a reply to: lostbook

Cali

California USA, 39 32 20 N, 121 29 08 W

originally posted by: lostbook
a reply to: corblimeyguvnor

Where is this?

Oroville California USA...

Looks like big trouble !!!!!!!!!!!

Water flowing over emergency spillway at tallest US dam

Water flowing over emergency spillway at tallest US dam
[Associated Press]
MICHAEL BALSAMO and RICH PEDRONCELLI
Associated PressFebruary 11, 2017
View photos
Water flows through break in the wall of the Oroville Dam spillway, Thursday, Feb. 9, 2017, in Oroville, Calif. The torrent chewed up trees and soil alongside the concrete spillway before rejoining the main channel below. Engineers don't know what caused what state Department of Water Resources spokesman Eric See called a "massive" cave-in that is expected to keep growing until it reaches bedrock. (AP Photo/Rich Pedroncelli)

OROVILLE, Calif. (AP) — Water started flowing over an emergency spillway at the nation's tallest dam, on Lake Oroville, for the first time Saturday after erosion damaged the Northern California dam's main spillway.

Officials hoped to avoid using Oroville Dam's emergency spillway, fearing it could cause trees to fall and leave debris cascading into water that rushes through the Feather River, into the Sacramento River and on to the San Francisco Bay. Crews prepared for several days, clearing trees and brush.

Water began running over the emergency spillway around 8 a.m., according to California's Department of Water Resources. It was the first time the emergency spillway has been used in the reservoir's nearly 50-year history.

a reply to: corblimeyguvnor

Water is now rushing over emergency spillway.
sanfrancisco.cbslocal.com...

A video from a local person.

a reply to: burntheships

thanks for the update

Not looking good

a reply to: xuenchen

Department of Water Resources spokesman Eric See called a "massive" cave-in that is expected to keep growing until it reaches bedrock.

What, exactly, does that mean?

a reply to: corblimeyguvnor

Started at about 8:00 am today (Saturday).

Once the water level of Oroville Lake rises above a certain elevation,
water begins to flow automatically into the emergency channel.
SFGate

Expected to continue for several days.

Lets hope it holds up.

The State needs to get off its lard and stop whining about
the drought and actually do something to fix the infastructure.
Weather like this is common there, happens in cycles.

They have had since 2011 to do something rather than
raise taxes and fix nothing.

Would it be bad form to crack a joke about that spill way ?

Cause there's some great ones to be made.

a reply to: burntheships

I guess it is TOO LATE, short term, you can't have fixers working if that turbulence happens. If it continuances up hill as it seems to be, hope them Pylons and the electrical system hold out

a reply to: neo96

Go for it, providing it's on topic

a reply to: neo96

Too soon

originally posted by: Snarl
a reply to: xuenchen

Department of Water Resources spokesman Eric See called a "massive" cave-in that is expected to keep growing until it reaches bedrock.

What, exactly, does that mean?

Means it's collapsing until it doesn't anynore.

originally posted by: corblimeyguvnor
a reply to: burntheships

I guess it is TOO LATE, short term, you can't have fixers working if that turbulence happens. If it continuances up hill as it seems to be, hope them Pylons and the electrical system hold out

Yes, it is too late now. Cal Fire was busy for a week cutting trees off the
emergency spill way, which is just dirt. They cleared the trees so they
would not rip out and cause more damage.

Here is a HD video aerial view from a copter, gives you an idea of how much water is flowing.

a reply to: xuenchen

This part of that article is concerning.

Unexpected erosion chewed through the main spillway earlier this week, sending chunks of concrete flying and creating a 200-foot-long, 30-foot-deep hole that continues growing. Engineers don't know what caused the cave-in that is expected to keep getting bigger until it reaches bedrock.

Is that a massive sink hole?
Is the earth destabilizing for another reason?
Could this lead to earthquakes?
Could this have been caused by an earthquake?

L A Times

Water started flowing down the spillway into the Feather River early Saturday, with officials continuing to emphasize there was no imminent threat to the public or to the integrity of the dam.

"Relatively speaking, it's a small spill," See said, noting that the flow over the emergency spillway is expected to end in the next 38-56 hours.

"The lake will actually drop and the spill will cease," he said.

The dam is not threatened by these conditions,” said Bill Croyle, acting director of the Department of Water Resources. “These kinds of flows are typical for this kind of runoff period.”

That article is from 45 minutes ago at time of posting. Sounds like there is no threat?