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Fontenelle Working Group Meeting August 18, 2011

Fontenelle Working Group Meeting August 18, 2011. Katrina Grantz, PhD Upper Colorado Region Hydraulic Engineer. Water Year 2011 Operations Review. Observed Snowpack Water Year 2011. Snowpack peaked larger and later than usual. Observed Inflow and Release.

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Fontenelle Working Group Meeting August 18, 2011

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  1. Fontenelle Working Group Meeting August 18, 2011 Katrina Grantz, PhDUpper Colorado Region Hydraulic Engineer

  2. Water Year 2011 Operations Review

  3. Observed SnowpackWater Year 2011 Snowpack peaked larger and later than usual

  4. Observed Inflow and Release 2011Apr-Jul Inflow1221 KAF (142%) 2009Apr-Jul Inflow968KAF (113%) • Inflows came larger and later than ususal, • Worry about how much snow actually resided at high elevations • Moved water early to manage risk 2010Apr-Jul Inflow488 KAF (57%)

  5. Observed Reservoir Elevation Drew down reservoir as low as possible (close to losing unit and boat ramps)

  6. Water Year 2012 Projected Operations

  7. Release ScenariosWater Year 2012 Wet soil moisture and relatively high WY forecast relatively high fall/winter releases to achieve reservoir drawdown by next spring. (Last year was 1,050 cfs) Projected Release Fall / Winter 1,200 cfs

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