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<br />desirable nllmmum of 200 c. f. s. for downstream quality control below Heart
<br />Mountain Powerplant. After April, releases for downstream irrigation require-
<br />ments would allow maximum storage of 405,000 acre-feet by the end of June.
<br />End-of-water year storage of 239,000 acre-feet would be 79 percent of normal.
<br />
<br />Power Production
<br />
<br />With reasonable minimum water supply, the Western Division System would pro-
<br />duce 103 gigawatt hours less energy than forecast for the most probable plan.
<br />Additional import of 531 gigawatt hours would be required from the l'-SMBP
<br />Eastern Di,'ision System to meet the estimated Western Division System power
<br />load.
<br />
<br />The Operation Plan After February 1
<br />If Reasonable Maximum Inflow Were Forecast
<br />
<br />Green Mountain
<br />
<br />~);'/)
<br />
<br />Releases from Green Mountain powerplant for replacement, power, and river and
<br />reservoir regulation would reduce reservoir storage to the minimum desirable
<br />content of 40,000 acre-feet by April 30. Releases for power production during
<br />May, June, and July would be varied as required to allow reservoir fill without
<br />spill or powerplant bypass by the end of July. Thereafter, Green Mountain Res-
<br />ervoir would remain full for the remainder of the wateryear. Anticipated diver-
<br />sion of 38,000 acre-feet from the Blue River by the cities of Denver and Colorado
<br />Springs would cause 8.0 gigawatt hours of power interference to Green Mountain
<br />Powerplant.
<br />
<br />Willow Creek
<br />
<br />As with the normal and minimum plan, Willow Creek Reservoir would provide a
<br />constant release of 7 c. f. s. through March to enhance fishery flows in the Colo-
<br />rado River. With no Willow Creek water pumped to Lake Granby, maximum
<br />inflows would fiB Lake Granby to capacity by June 30 and 58,000 acre-feet more
<br />than irrigation needs would be released to willow Creek during the April-July
<br />period.
<br />
<br />G ranby
<br />
<br />Storage in Lake Granby would reach a low point of 426,000 acre-feet (Elevation
<br />8,263) at the end of February. Thereafter, Granby storage would refill to capa-
<br />city (539,800 acre-feet - Elevation 8,280) and remain nearly full for the remainder
<br />
<br />33
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