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<br />Reasonable- Minimum Inflow Forecast <br /> <br />Green Mountain Reservoir <br /> <br />If reasonable minimum inflow is forecasted on February I, releases from the reservoir for <br />bypass of inflow, power, replacement, and reservoir regulation will be scheduled in March <br />to bring storage to about 85,999 acre-feet by April 30. In order to maximize storage in Green <br />Mountain Reservoir, releases will be held at or near the minimum required release of 60 W/s <br />to satisfY downstream water rights on the Blue River from April through June. If~irii~ <br />intlo~~~iti;~l"vail, GreenMountain reservomvmrrjjO~'PiU~_~C-~.,1i~JII <br />Res~~~.~~effort toenfumcepeakflowsfijrt,thet~~~~li With reasonable <br />minimum runoff, it is estimated that Colorado Springs and Denver will deplete the Blue <br />River by about 69,599 acre-feet during the April-July period. The projected April-July Blue <br />River depletions reflect projected upstream operations for the 1999 water year. The <br />depletions will cause about f4:6 gigawatt-hours of power interference at Green Mountain <br />Powerplant. Under the existing operating criteria, Green Mountain Reservoir will not <br />physically fill given the greater projected depletions and reasonable minimum intlow <br />condition. Releases in July, August, and September will be made to bypass intlow, for <br />replacement of Project depletions, and for natural flow shortage to west slope irrigation and <br />domestic users. Carryover storage at the end of the water year will be 89,998 acre-feet, <br />which is 44,849 acre-feet below the 3D-year average of 124,840 acre-feet. <br /> <br />Willow Creek Reservoir <br /> <br />If reasonable minimum runoff develops, Willow Creek Reservoir will fill to the content of <br />8;500 acre-feet by the end of March. This is ~ acre-feet below maximum reservoir <br />storage. All water in excess of downstream requirements will be pumped to Lake Granby, <br />totaling 17,999 acre-feet during the April-August period. With minimum required releases <br />to the river, carryover storage of about 9;OOG acre-feet will remain fit the end of the water <br />year. <br /> <br />Lake Granby <br /> <br />Storage in Lake Granby will be lowered to 391,988 acre-feet by the end of March. With <br />minimum inflow, Lake Granby will refill to a maximum of 427,399 acre-feet by the end of <br />June, which is 112,599 acre-feet below maximum storage capacity. Adams Tunnel <br />diversions from May through July will be well above average to provide desirable east slope <br />reservoir storage levels and adequate irrigation deliveries in the Project area. September 30 <br />carryover storage of 368,299 acre-feet would be 45,179 acre-feet below normal and 291,799 <br />acre-feet above dead storage. <br /> <br />filename: CBTA0P98,DFT <br /> <br />23 <br /> <br />Preliminary Working Draft July 8,.19W <br />