Calif largest reservoir - at 95% of capacity, battling to prepare for storms

CARIIS

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Published 12:32 p.m. PT Feb. 13, 2017

Shasta dam

http://www.redding.com/story/news/local/2017/02/13/water-releases-going-up-more-storms-approaching/97863200/

http://cdec.water.ca.gov/cdecapp/resapp/getResGraphsMain.action

List of them in terms of size

https://en.wikipedia.org/wiki/List_of_largest_reservoirs_of_California

Shasta Dam sees biggest release in decades as reservoir nears capacity


http://www.sfgate.com/news/article/Shasta-Dam-sees-biggest-release-in-decades-as-10929327.php

Shasta Dam releases more water, Sacramento River swells


http://www.krcrtv.com/news/local/sh...-more-water-sacramento-river-swells/332572294

Its downstream of the other breaking one guys.

Actually, the other (crumbling one) guys have done better than these folks - sorry.

They are not broken - can't find what there spillway can handle at max, I will try - if you can help pls do - have they been at max and losing ??

What the heck -throw it in -- Don Pedro is at 98% linked above .They know all this - if I can find it they know
 
HI my curious how are you - I hope nowhere in Calif!
 
I read that if and when they release water from the Don Pedro, authorities are not worried about Modesto flooding, but further down where the Tuolumne River meets the San Joaquin River, which is very full. I had never heard of the small Central Valley town at risk, Vernalis.

I had no idea California was gonna float away. I had heard that it was very wet . Why this whole mess isn't more on the news is bewildering

This ones a mess --its like the outflow is 8000 and inflow 30000. while at 99% (the Pedro one)

Dam concerns reverberate


[FONT=&amp]Feb 13, 2017 at 09:25PM[/FONT]
[FONT=&amp]The state Department of Water Resources lists 35 dams in Calaveras County and 30 dams in Tuolumne County, and several of the largest are at capacity or nearing capacity in the midst of one of the Central Sierra’s wettest winters to date.

recent events show that things can still go wrong when extra runoff arrives and structural limits get tested.


Before noon Monday, staff with the National Weather Service in Sacramento issued a flash flood warning for potential imminent failure of the North Fork Mokelumne River levee, which could mean Tyler Island will be flooded as well as parts of east Walnut Grove.

Sacramento County Office of Emergency Services staff called for evacuation of Tyler Island


Compromised levee forces evacuation of Tyler Island in Delta


20 homes are in the area

Saturday, crews lowered a portion of the ring levee on the McCormack-Williamson Tract north of Tyler Island to allow for controlled flooding.


http://www.sacbee.com/news/state/california/water-and-drought/delta/article132435374.html#storylink=cpy



Crumbling Tyler Island levee 'looks like a meteor hit it'

[/FONT]

http://www.recordnet.com/news/20170213/crumbling-tyler-island-levee-looks-like-meteor-hit-it

http://www.sacbee.com/news/state/california/water-and-drought/delta/article132435374.html


More flooding expected as Modesto-area waterways rise


http://www.modbee.com/news/article132524009.html

SAN JOAQUIN RIVER WATCH

river meets the other half of the state's largest watershed at the Sacramento-San Joaquin ....

Delta .
expected to flow over levees 12 miles south of Manteca sometime Thursday near Vernalis at the confluence of the Stanislaus River by the San Joaquin National Wildlife Refuge.

Mossdale expected to reach warning stage Saturday


http://www.mantecabulletin.com/section/1/article/141658/
 
[h=1]San Joaquin River is ready to flood [/h]
local news
 
59 mins ago



FEMA stages at Travis Air Force Base in response to Oroville Dam situation


[FONT=&quot]Logistics workers the Federal Emergency Management Agency coordinate the delivery of relief supplies that are being stored at Travis Air Force Base as a contingency against a possible failure of the auxiliary spillway at Oroville Dam. The base is acting as a staging area for FEMA personnel, providing space for necessary equipment and supplies.[/FONT]


http://www.timesheraldonline.com/ge...ce-base-in-response-to-oroville-dam-situation
 
Storms are starting up again now. This will be a dangerous next few days..


supposed to rain in Oroville for the next 6 days straight...:eek:
 
Feb 15:

The long-term forecast has rainfall totals withing the watershed that are showing the exact spot where Lake Oroville watershed is located will get 11.62 inches of rain over the next 10 days, the most accumulated rainfall in the entire western USA

3220​
Latest imagery its kinda hard to make out where calif is!!! go 140W on the bottom and go up!!

https://www.vencoreweather.com/blog...as-a-brief-break-before-getting-pounded-again

If anyone knows anyone in that area pls pass along because news seems all over the place- this info is from the weather people not a local weatherperson !!

wpc-forecast-accum-precip-2-12-to-2-22.png
 
Experts familiar with the flood-control manual at Oroville Dam are reporting the document hasn’t been updated since 1970. Independent experts said yesterday the critical 47-year-old document determines how much space should be left in Lake Oroville for flood control during the rainy season.

Some are so old, their pages include charts drawn by hand in pen.

tied to outdated weather models. At Oroville, the manual cites weather patterns prior to the 1950s, and data doesn’t account for the catastrophic floods of 1986 and 1997
Read more here: http://www.sacbee.com/news/state/california/water-and-drought/article133030359.html#storylink=cpy


tied to outdated weather models. At Oroville, the manual cites weather patterns prior to the 1950s, and data doesn’t account for the catastrophic floods of 1986 and 1997
Read more here: http://www.sacbee.com/news/state/california/water-and-drought/article133030359.html#storylink=cpy
Read more here: http://www.sacbee.com/news/state/california/water-and-drought/article133030359.html#storylink=cpy




http://www.sacbee.com/news/state/california/water-and-drought/article133030359.html

http://kubaradio.com/category/news/local-news/
 
It is raining hard here in Southern Cali right now. And my Mom lives an hour or so away from Oroville, and she said it has been raining all day there already.

She is not below the dam, thank goodness.
 
Wow. Just trying to catch up on this story.

I can't believe they aren't running any bathymetric surveys and updating their stage-storage capacity/ rating curves for state reservoirs. Lakes lose capacity with sedimentation. Floods also scour channels and change dynamics and efficiency of the flood control system.

This issue needs to be a component of any water management funds package that is proposed to CA legislators. Reservoir capacity is vital to water management.

Also FEMA maps need updating too! Real-time stream gages are also invaluable to saving lives in flood-prone areas. We just learned that here the hard way when 11 people were swept away along the Blanco River. Still haven't found the 2 children. [emoji20]

The only stream gage was lost during the storm and the only other existing network was by phone, as in Joe just called and said the Blanco is running over the Fisher Road bridge.

I just heard an *amazing* presentation by the city manager who had the responsibility of evacuating Wimberley, Tx. They subsequently got $6.8M and they spent it very wisely.

I hope this is scary enough on the heels of the drought to generate some real action and significant change for public safety, emergency management and dated water policy in CA.

Thanks for this thread and all the updates CARIIS. You rock.
 
It is raining hard here in Southern Cali right now. And my Mom lives an hour or so away from Oroville, and she said it has been raining all day there already.

She is not below the dam, thank goodness.
Glad to hear your mom is safe, katydid.
 
There's a prediction that a 30 foot wall of water might escape the Oroville Dam...the state capital is just 70 miles downstream...and no one seems to notice or care.
 
I live in the State capital and we are not in danger (at this time at least...)
 
Here is a picture of the New Don Pedro Dam. It's an embankment dam like the Oroville Dam. Can't see it but that's a road at the top. I've been on it but there is no overlook to see the dam, and can't stop on the road. Don Pedro is the 9th largest dam in the USA. No danger to the dam but they are going to have to release water and danger is where the Tuolumne River meets the San Joaquin River.

New%u00252BDon%u00252BPedro%u00252BDam.jpg

https://www.britannica.com/technology/earthfill-dam

Earthfill dam, also called Earth Dam, or Embankment Dam, dam built up by compacting successive layers of earth, using the most impervious materials to form a core and placing more permeable substances on the upstream and downstream sides. A facing of crushed stone prevents erosion by wind or rain, and an ample spillway, usually of concrete, protects against catastrophic washout should the water overtop the dam.
 
Water is complicated in California.

http://www.cserc.org/news/don-pedro-plans-raise-concerns/

Many may not be aware of the complexities that govern our region’s water supply and the many players involved in water management.

The water that is stored in Don Pedro Reservoir (the 5th largest reservoir in the state of California) is allocated to Turlock Irrigation District and Modesto Irrigation District, who have senior water rights dating back to the 1880’s. Additionally, the City and County of San Francisco utilizes the reservoir for backup storage for its Hetch Hetchy project, thus having junior water rights and an interest in its management. The land surrounding the reservoir is managed by the Bureau of Land Management (BLM). And finally, the Federal Energy Regulatory Commission (FERC) administers the license that controls the dam and water releases for municipal and agricultural users downstream, for fisheries in the lower Tuolumne River, and to generate hydro-electric power.
 

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