January 2017 rainstorms, updates and effects on lakes

Discussion in 'Freshwater' started by Kellen, Jan 20, 2017.

  1. Kellen

    Kellen Owner
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    I'm going to try to update precipitation totals here, and their impacts on the creeks and ultimately the lakes water levels.

    Feel free to provide your own updates and observations if you see anything specifically related to the lakes or precipitation within their watersheds. The other thread (California is about to get blasted by rain) that I had been posting this in kind of had some other strings of dialogue going in, so thought best to keep this one more focused just on how the rain is impacting the lakes.

    For reference, here are the totals for the city lakes from January 9th just to provide a baseline to see the gains.

    Screen Shot 2017-01-23 at 7.33.08 PM.png

    El Cap is up almost 1 vertical foot since Wednesday. Still some heavy stuff in the area. Hope it keeps piling on.
     
    #1 Kellen, Jan 20, 2017
    Last edited: Jan 23, 2017
  2. mcfish

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    The creeks are flowing at max levels..I'm looking for several feet in the lakes after we get all the runoff from these 3 storms! We're saved.....thinking positive!
     
  3. Kellen

    Kellen Owner
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    Looks like Santa Ysabel, which is within the Sutherland watershed, and near the Santa Ysabel Creek which feeds the lake has gotten almost 2.5" of rain today.
     
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  4. Kellen

    Kellen Owner
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    The Sweetwater River, near Descanso reached a streamflow of 900 cubic feet per second a couple hours ago, but has gone down to about 700 now and still declining.

    So that's a good amount of water headed toward Loveland right now.
     
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  5. Kellen

    Kellen Owner
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    Santa Maria Creek, which feeds Lake Hodges via Ramona peaked at about 1,000 cubic feet per second, now at 958 and declining.
     
  6. Kellen

    Kellen Owner
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    Santa Ysabel Creek, in Ramona, which feeds Lake Hodges is currently flowing pretty good at 720 cubic feet per second.

    This chart puts things in perspective though right now, showing historic peak flow rates. So as you can see, this is far more water than has flowed through that creek recently, but it's nowhere near historic levels (yet). The 1916 data was before Hodges existed. The 8000 cubic feet per second flow in 1995 resulted in the lake spilling over though.

    If the heavy stuff is still to come, and it lives up to the hype, this is something to keep an eye on.

    The Santa Ysabel Creek has a drainage area of about 112 square miles, which represents almost half of Lake Hodges' 248 square mile watershed. It is Hodges' main tributary.

    IMG_0493.PNG
     
  7. Kellen

    Kellen Owner
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    To apply more historical context, this is the highest streamflow for Santa Ysabel Creek, below the Lake Sutherland Dam, since December of 2010 when it reached a peak of over 4,000. That event brought Hodges from 43% capacity to 92%. It's currently at about 39.5%.

    December 2010 saw 9" of rain, almost all of it coming in a 3 day stretch beginning on December 20th with 1.96" of rain, followed on December 21st with 1.84", and ending on December 22nd with 3.4".

    So that's the kind of rain we're hoping for if we want a significant impact to the lakes.
     
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  8. jeepnkal

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    Thanks for the updates and keep them coming.
     
  9. BadBilly

    BadBilly Well-Known Member

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    They just said on the news that Hodges has water flowing over the spillway.
    Can anyone confirm?
     
  10. Nute

    Nute Researcher...
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    Chip Gilbert put up a video on FB showing water (not much) already under the bridge. Search his name and he has the video on his page. It wont let me post the video on here for some reason.
     
  11. chris102681

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    4.5 inches of rain here in Fallbrook after Thursday and Friday
     
  12. Kellen

    Kellen Owner
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    I can't imagine this is even close to accurate.
     
  13. Kellen

    Kellen Owner
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    Some notable observed rainfall totals from the 24 hour period from 4am Friday through 4 am Saturday;
    • 3.21" at Lake Henshaw, which is right on the northern border of the Hodges watershed, and close to the northern border of Sutherland's watershed. Also obviously good news for Lake Henshaw itself.
    • 3.74" in Julian, which is part of El Capitan's watershed
    • 2.75" in Santa Ysabel, which is part of Sutherland's watershed
    • 2.22" in Ramona, most of which is within Hodges' watershed and some of which is within San Vicente's watershed
    • 2.28" at El Capitan Dam itself
    • 2.6" at Lake Morena, which is also a good representation of what Barrett's 131 square mile watershed saw
    Hodges and El Capitan so far are probably the most benefitted from these storms. But that's a pretty good number for Morena and Barrett as well.
     
  14. Kellen

    Kellen Owner
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    As of 1:45 PM, El Capitan is up 3.52 vertical feet since Friday and 2.72 feet since last night. It's still climbing.
     
  15. Kellen

    Kellen Owner
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    San Vicente has come up about 3/4 of a foot since yesterday. Its a giant lake now, won't react as quick to rain as others.
     
  16. Queue

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    All of the rain in NorCal has turned the SWP pumps on at DVL. Up a foot or two in 11 days. I hope they continue another 50' and fill it.
     
  17. Kellen

    Kellen Owner
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    Santa Ysabel Creek, the main tributary for Lake Hodges is currently discharging 108 cubic feet of water per second. It peaked late last night at 842 cfs.

    [​IMG]
     
  18. RippinLips619

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    Any reports at Morena?
     
  19. Kellen

    Kellen Owner
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    Guejito Creek in the San Pasqual Valley, which feeds Santa Ysabel Creek below the station referenced above, peaked about 600 cfs last night and is currently discharging 19 cfs. So that water would be in addition to the water referenced in the Santa Ysabel Creek report, headed to Lake Hodges.

    [​IMG]
     
  20. Kellen

    Kellen Owner
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    Morena doesn't have any automatic reporting stations. So water level has to be gauged manually. We'll find out Monday how much the lake has come up.

    Morena also relies a lot on local snow melt from Pine Valley to Laguna and southeast (basically along the S1/Sunrise Highway and southeast). So far, not a ton of snow. Laguna has 7" of snow on the ground currently, which won't amount to really anything in the lake. We'll see what the next round brings.
     
    #20 Kellen, Jan 21, 2017
    Last edited: Jan 21, 2017
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