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If you live near the rim of this great valley there is probably an old creek bed or gully.

If you live in the middle you are definitely near a river and levees.

Yes, they said the entire Central Valley of California needs to be ready to evacuate on short notice.

1 posted on 02/19/2017 6:26:41 PM PST by Mariner
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To: Mariner

“Yes, they said the entire Central Valley of California needs to be ready to evacuate on short notice.”

Prayers Up! Are YOU safe?


2 posted on 02/19/2017 6:32:32 PM PST by Diana in Wisconsin (I don't have 'Hobbies.' I'm developing a robust Post-Apocalyptic skill set!)
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To: Mariner

If I lived anywhere close to a river below Oroville, I wouldn’t wait for the call to evacuate. By then the highways will be packed, people will panic, and it won’t be nice. If I had a family, I would be taking a vacation..... loading up and leaving right now...to higher ground.


3 posted on 02/19/2017 6:34:08 PM PST by rovenstinez
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To: Mariner

“The Oroville Dam is to be soaked by a foot of rain by Tuesday, ramping up the pressure on engineers who are frantically trying to repair ‘patch and pray’ quick-fixes which led to its near-collapse last week.”

Great. They’ve been performing “patch and pray” for quite some time.
Considering the area that the dam affects - they, actually, thought those procedures hold. Not so!

They’re too busy trying to initiate a One-Way-Westbound-Only Choo Choo Train.

We pray for everyone - may they stay safe.

Read more: http://www.dailymail.co.uk/news/article-4226368/Cracks-offer-clues-California-dams-troubles.html#ixzz4ZBl56nYX


4 posted on 02/19/2017 6:34:28 PM PST by Cecillia
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To: maggief

Ping


7 posted on 02/19/2017 6:39:04 PM PST by SE Mom (Screaming Eagle mom)
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To: Mariner

Short notice isn’t going to be enough to get out of the way of flood waters.

Teleporting might be able to accomplish it, but one stalled car on the road will tie it all up and people will die.


14 posted on 02/19/2017 6:59:46 PM PST by metmom (...fixing our eyes on Jesus, the Author and Perfecter of our faith...)
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To: Mariner
The headline article is the usual misleading crap. The article text says:

"In other words, those living anywhere near a river, a slough, a levee, a creek or a canal need to be ready to flee floodwaters at a moment’s notice."

That is bad enough.

The state flood control system operators have done a great job so far. The system is close to overload so this present storm might put it over the edge. Any big warm rain in the next month might melt enough snow pack to do the same.

At that point the flood control operators will triage some areas by opening levees to save as much as possible of the rest. They won't wait until large areas flood simultaneously from widespread levee failures. That may happen anyway, but I'm sure the system operators have updated the triage plan and are ready to open levees as necessary to avoid avoidable flooding.

We're just at the point that major unavoidable flooding may happen by next weekend.

The Oroville Dam spillway break compounds the problem. The flood control operators must assume now that its emergency spillway will fail the next time it is used, and make a worst case plan for that. This means adding a sudden surge of several hundred thousand acre feet of water over several hours to their planning.

Which will mean opening levees downstream as soon as the Oroville Reservoir level goes over a certain level - maybe 895 feet above sea level (it's about 850' now and the emergency spillway top is at 901' above sea level). It will take several hours for the flow from an Oroville emergency spillway breach to get far down river, and a breach would take several hours to unfold. But it will also take hours for intentional levees breaches to minimize any dam breach spill pulse enough to avoid widespread damage to the downriver flood control system.

None of this can save Oroville, Yuba City, Marysville, etc, from an Oroville Reservoir breach.

Pay real close attention to intentional levee breaches by California flood control system operators. That will give us a few hours warning of how scared they are, particularly of the Oroville Dam.

18 posted on 02/19/2017 7:09:09 PM PST by Thud
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To: Mariner
Yes, they said the entire Central Valley of California needs to be ready to evacuate on short notice.

I lived in the Bay Area for a few years. My experience with driving in the central valley leads me to believe an evacuation would not go well. California has a lot of highways that go north-south. But it doesn't have a lot that go east-west. Going east or west would probably be the best way to higher ground for most in the valley, but that's not where the roads go.

For instance, the central valley is separated from the San Francisco Bay area by a range of low mountains, but there are only a few routes over those hills. They would be brought to a halt by traffic quickly.

Also, there are a lot of state highways crossing the valley, but these are more for agricultural access, not moving large numbers of people, and cross streams and canals with low bridges that are not build for floods. In short, it would be easy for someone's planned evacuation route to get cut off by either crowds or water.

20 posted on 02/19/2017 7:17:45 PM PST by Vince Ferrer
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To: Mariner
In algore and moonbeam we trust.....NOT!!

idiots

21 posted on 02/19/2017 7:27:33 PM PST by JPG (TRUMP WINS!!)
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To: Mariner

It’s not much different than New Orleans in the delta areas of California. Due to the levees, many of those areas are below sea level - yet they have the most productive agricultural areas in America. But if they breach - there could easily be many square miles under water.

Funding illegals and other waste means they couldn’t maintain them...


24 posted on 02/19/2017 7:57:30 PM PST by SouthernerFromTheNorth
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To: Mariner

My brother lives in Colusa west of the Oroville Dam and near the Sacramento River and levees. He is nervous.


26 posted on 02/19/2017 8:31:23 PM PST by Inyo-Mono
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To: Mariner
In my opinion, the worst of it could happen from Rio Vista southward on the Sacramento River.

Why? Because no only do you have all that runoff from the Sacramento River diverted through the Yolo Bypass (the Bypass ends northwest of Rio Vista, you also have runoff from the roaring Putah Creek, especially with the water level higher than the bell-mouth spillway at Monticello Dam, resulting in a lot more water going down Putah Creek.

That means every Sacramento-San Joaquin Delta island from Rio Vista and downstream are under threat, the cities of Antioch, Pittsburgh, and Martinez are under threat, the oil refineries east and west of Carquinez Strait are under threat, everything else along the shores of San Pablo Bay are under threat.

27 posted on 02/19/2017 8:42:07 PM PST by RayChuang88 (FairTax: America's economic cure)
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To: Mariner
Lake Oroville holds 3.5M acre feet of water. That's enough to cover the state of Connecticut (3.5M acres) to a depth of one foot, if Connecticut were as flat as a pool table.

If the main dam suffers catastrophic failure, the flooding is not going to cover 3.5M acres, because they're not a pool table, but much less, concentrated in or near (within two, three, five, perhaps even ten miles, depending on the terrain) the river valleys, but to a much greater depth than one foot. Say, 10ft on average, or 20ft on average, a hundred miles or more down river (all that water is going to need a new home).

Pray for those folks. Many tens of thousands are at risk.

33 posted on 02/19/2017 10:59:13 PM PST by LibWhacker
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To: Mariner

I am trying very hard to avoid any biblical references, and it’s difficult, so all I will say is “build an ark.”


35 posted on 02/20/2017 4:16:12 AM PST by Daveinyork
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To: Mariner

Okay, good morning everyone. As one who has followed this event with interest it looks like Oroville is still holding on this morning.

Based upon Lake measurements, it appears inflow has fluctuated between 47k and 23k cubic feet per second. Operators have been holding outflow over the main spillway to 59,900 cfs or thereabouts. This has kept lake levels falling very slightly from 851.17 to 849.54 or a decline of 1’ 7 1/2”.

Rainfall in the tributary area continues with Brush Creek, Four Trees and Buck’s Lake showing 24 hour rainfall running 2.4, 2.7 and 2.9 on the main fork of the Feather. Quincy and Grizzly Ridge have received about 1.5 inches. Gauges at Buck’s Creek and Lake Davis are not reporting data but areas surrounding them are less than critical.

Beale AFB radar:
https://radar.weather.gov/radar_lite.php?rid=bbx&product=N0R&loop=yes
Shows the more intense storms in the Folsom Reservoir drainage but higher elevation hills shade out some readings east of Oroville.

Clicking the eastern link shows Reno radar showing even distribution of precipitation across the western Sierras.

San Francisco Bay radar
https://radar.weather.gov/radar_lite.php?rid=mux&product=N0R&loop=yes

Shows the storms making landfall to be heavier south of the main urban area with Flash Flood warnings south of Monterrey Bay. I believe the coast highway is still closed for the bridge problems at Pfeiffer Canyon so travel there is very limited.

A prayer is offered for the next 72 hours that the Rivers don’t rise and the dam holds.


36 posted on 02/20/2017 6:14:36 AM PST by KC Burke (If all the world is a stage, I would like to request my lighting be adjusted.)
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