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Water Year 2005 Season Wrap up. Wind River – Big Horn River Basin Advisory Group Meeting December 6, 2005 Cody, Wyoming. Reservoir Carry-Over Volumes October 1, 2004 Bull Lake: 88,940 acre-feet 59% Pilot Butte: 15,630 acre-feet 45% Boysen: 475,100 acre-feet 63%

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Water Year 2005 Season Wrap up

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Water year 2005 season wrap up l.jpg

Water Year 2005Season Wrap up

Wind River – Big Horn River Basin Advisory Group Meeting

December 6, 2005

Cody, Wyoming


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Reservoir Carry-Over Volumes

October 1, 2004

  • Bull Lake: 88,940 acre-feet 59%

  • Pilot Butte: 15,630 acre-feet 45%

  • Boysen: 475,100 acre-feet 63%

  • Upper Sunshine: 6,600 acre-feet 12%

  • Lower Sunshine: 1,010 acre-feet <2%

  • Roach Gulch: 1,100 acre-feet 3%

  • Buffalo Bill: 438,800 acre-feet 68%

  • Big Horn: 711,800 acre-feet 54%


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Streamflow Forecasts


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BOYSEN RESERVOIR

  • Fulfilled permitted capacity 751,951 acre-feet February 16

  • Flushing flow initiated by Game and Fish and Burec April 11-13, maximum release from Boysen of 5000 cfs.

  • Season high inflow: 9,120 cfs on June 24

  • Season high release: 5,580 cfs on June 26

  • Season high volume: 740,026 on June 27

  • Winter Release is at: 1000 cfs


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BULL LAKE RESERVOIR

  • Fulfilled permit capacity on June 9,

  • 151,951 acre-feet

    • Season high inflow: 1,970 cfs on June 21

    • Season high outflow: 1900 cfs on June 22

    • Winter Release is at: 25 cfs


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    BUFFALO BILL

    • Fulfilled permitted capacity on

      May 24

    • Maximum volume stored: 634,738 acre-feet June 24

    • Maximum inflow 8402 cfs May 21

    • Maximum release 5926 cfs June 26

    • Winter Release is at: 200 cfs


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    Other Reservoirs

    • Big Horn Reservoir: Maximum stored 1,106,987 acre-feet 84% of physical capacity

      • Max Inflow of over 13,000 cfs in May 12 and June 26

  • Anchor Reservoir: 5093 acre-feet, June 25

  • Greybull Valley Reservoir: Filled to permitted capacity 33,169 acre-feet, July 20.

    • First time since built


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    Administration Activities


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    Dividing the Waters

    Accounting began July 24thSuccessful Rotation RVID and MID entered agreement to rotate 15 cfs during August for 15 days per turn.


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    Other Activities

    • Greybull River Leveling Program

      • System works well

      • No major problems this season

      • Thunderstorms still the wildcard

    • General Adjudication: Large projects in process now.

    • Cody Canal

    • Big Horn Canal

    • Sidon Canal

    • Elk/Lovell Canal

      • Lake View Canal

      • Deaver Canal


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    Other Division Activities

    • Stream gaging upgrades

      • Real-time data should be available on the Big Horn River next season on 8 additional canals

        • 11 sites necessary to complete this task

      • Four more are proposed for late 2006

      • Middle Fork Popo Agie Equipment upgrade with NWS


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    Future Outlook

    • October 1, 2005

      • Bull Lake: 66,100 acre-feet 44%

      • Pilot Butte: 12,300 acre-feet 35%

      • Boysen: 591,900 acre-feet 78%

      • Upper Sunshine: 24,000 acre-feet 45%

      • Lower Sunshine: 21,000 acre-feet 36%

      • Roach Gulch: 8,000 acre-feet 24%

      • Buffalo Bill: 450,300 acre-feet 70%

      • Big Horn: 1,000,506 acre-feet 76%


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    Future Outlook


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    Questions?


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