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GRUWUT January 2014 Green River Modeling

GRUWUT January 2014 Green River Modeling. GRUWUT January 2014 Green River Modeling. Two models: Reclamation’s Green River RiverWare model (monthly timestep) Utah DWRe’s MODSIM Green River (daily timestep) model Reclamation runs two depletions scenarios:

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GRUWUT January 2014 Green River Modeling

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  1. GRUWUT January 2014 Green River Modeling

  2. GRUWUT January 2014 Green River Modeling • Two models: • Reclamation’s Green River RiverWare model (monthly timestep) • Utah DWRe’s MODSIM Green River (daily timestep) model • Reclamation runs two depletions scenarios: • Colorado River Basin Study Scenario A “Current” (2012) and “Future” (2060) • Flaming Gorge Releases and Yampa Inflows are then output for input into DWRe’s MODSIM Green River MODSIM model (as most upstream inflows)

  3. Reclamation’s Green River RiverWare Model • Reclamation’s monthly model output is disaggregated to daily for MODSIM input: • Baseflow period daily flows are held constant through the month • Peak Flows are disaggregated: • Yampa by historical patterns • FG Releases per model rule logic (max release, ramp up/down rates...)

  4. Utah’s MODSIM Model • Includes daily historical tributary inflows, diversions and return flows throughout the Green • Four depletion scenarios modeled: • Current All • Current CO & WY, Future UT • Future All • Future CO & WY, Current UT

  5. Depletions Overview • CO & WY: From Reclamation’s Colorado River Basin Study Scenario A, and • UT: from Utah DWRe’s Water Rights & Depletion Summary

  6. January 2014 Model Results

  7. Hydrologic Classifications Spring flow period = May through July; Baseflow period = August through February; March & April not included in analysis

  8. Greendale Baseflow High end of target range (mod wet) Low end of target range (mod wet) Note: Avg, Mod Dry & Dry all have low range target of 800 cfs

  9. Jensen Baseflow

  10. Green River Baseflow

  11. Additional Depletions in Vicinity of Green River Compare datasets within circles to see the impact of additional depletions in the vicinity of Green River gage.

  12. Green River Baseflow (w/addl depletions near Green Rv.)

  13. Max Annual Peak Flow

  14. Greendale Max Annual Peak

  15. Jensen Max Annual Peak

  16. Green River Max Annual Peak

  17. Peak Flow Duration

  18. Discussion and Next Steps

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