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Thread: AR Flows

  1. #1
    Join Date
    Sep 2010
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    Granite Bay, CA
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    505

    Default AR Flows

    Flows were up to 37,500 yesterady, above 20,000 for quite some time.

    I thought the new emergency spillways were meant to help avoid this? Are they not yet factored into the flow algorithms?

    Just hoping we don't get to summer and say, "oh crap, wish we didn't flush all that water."

    On another note, given that it's early January, is there hope this brings in a lotta chrome still?

    I saw more salmon redds than ever mid-river this year. Hope they haven't gotten obliterated.

    Was thinking of fishing Lake Natoma -- river style.
    TroutSource.com
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  2. #2
    Join Date
    Apr 2019
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    On the River in Shastanistan
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    Default

    A warning was sent to all dam operators last week in advance of the pending "bomb cyclone" that hit to expect huge inflows. Those with limited storage capacity (like Folsom) were advised to start dumping water ASAP. The emergency spillway design has nothing to do with this.

  3. #3
    Join Date
    Jun 2014
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    Antelope
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    Default

    Folsom is one of the very few if only reservoir in CA that I know of that has a winter max capacity. They start dumping water once it gets above 60% capacity due to its low storage capacity. 977000 acre feet. So for easy numbers call it 1mil acre feet. But we all know with the amount of sediment behind that dam, it doesn't hold anywhere near the 1mil acre feet.
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  4. #4
    Join Date
    Feb 2016
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    Granite Bay
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    Default

    California is a dry state with a horrible water management, which exacerbates the problem even more.

  5. #5
    Join Date
    Jan 2005
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    Sebastian, FL, USA, Earth
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    Default

    We have had corruption revolving around water usage in California for over 100 years.

    Southern Cal has a huge population and votes so they take our water.




    Some years ago we had huge rains and the water at the Nimbus Dam was running over the top at 130,000 cfs.

    That spring after the flows came down the river bottom was "white" and leveled like a parking lot.
    Bill Kiene (Boca Grande)

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  6. #6
    Join Date
    Jun 2011
    Location
    Morgan Hill, CA
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    Default Dynamic Water Management

    Quote Originally Posted by mogaru View Post
    California is a dry state with a horrible water management, which exacerbates the problem even more.
    Pretty interesting read. Speaks to how improvements in weather forecasting makes fixed water level management obsolete. It is rather archaic to say in the winter time that Folsom isn't allowed to get more than 60% full. This year they are letting it get to about 72% full and they will start dumping water before the big storms hit! Seems like a no brainer for some of our reservoirs to be managed more dynamically than at fixed levels!


    https://www.npr.org/2023/01/11/11484...t-how-to-captu

  7. #7
    Join Date
    Feb 2016
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    Default

    The water level tables used to manage Folsom lake were created when George Washington was president.....at least.

  8. #8
    Join Date
    Jan 2005
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    Sebastian, FL, USA, Earth
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    Default

    Quote Originally Posted by mogaru View Post
    The water level tables used to manage Folsom lake were created when George Washington was president.....at least.
    Good one............

    I heard it was around 11,000cfs.
    Bill Kiene (Boca Grande)

    567 Barber Street
    Sebastian, Florida 32958

    Fly Fishing Travel Consultant
    Certified FFF Casting Instructor

    Email: billkiene63@gmail.com
    Cell: 530/753-5267
    Web: www.billkiene.com

    Contact me for any reason........
    ______________________________________

  9. #9
    Join Date
    Sep 2010
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    Default

    Great information. I have more questions than answers...

    Are they able to bump it to 72% full (vs 60%) because of the new emergency spillway?

    Any plans to remove some of the sediment in Folsom?

    ***Will the massive surge of water draw up MORE CHROME?

    Good news is that Shasta and Oroville should fill pretty nicely, so hopefully Folsom doesn't get sucked dry like last year.
    TroutSource.com
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  10. #10
    Join Date
    Mar 2005
    Location
    Tejas !!
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    793

    Default

    Quote Originally Posted by Troutsource View Post
    Great information. I have more questions than answers...

    Are they able to bump it to 72% full (vs 60%) because of the new emergency spillway?

    Any plans to remove some of the sediment in Folsom?

    ***Will the massive surge of water draw up MORE CHROME?

    Good news is that Shasta and Oroville should fill pretty nicely, so hopefully Folsom doesn't get sucked dry like last year.
    My understanding is that better forecasting is the key to keeping closer to full capacity.

    At the current rates, Im fearful every egg in the river is somewhere near the Farrallons right now...

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