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Water Year 2005 Season Wrap up

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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  1. Water Year 2005Season Wrap up Wind River – Big Horn River Basin Advisory Group Meeting December 6, 2005 Cody, Wyoming

  2. 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%

  3. Streamflow Forecasts

  4. 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

  5. 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

  6. 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

  7. 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

  8. Administration Activities

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

  10. 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

  11. 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

  12. 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%

  13. Future Outlook

  14. Questions?

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