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<br />c' <br />o <br />C'" <br />(!) <br />CO <br />~ <br /> <br />-9- <br /> <br />natural South Platte water supply is deficient. generally after July <br /> <br />first. The tunnel diversions will be reduced at the time Eestern Slope <br /> <br />run-off is at its peak in the swnmer. in order to permit ,the use of Big <br /> <br />Thompson wa ter for the generati on of hydr o-e lectrio enerr;y. Present <br /> <br />plans propose having in storage in Granby reservoir at leest 100,000 <br /> <br />acre-feet eaoh year on October lst for the generation of winter energy. <br /> <br />Studies were Ulade to determine the amount of .....ter that wi 11 <br /> <br />be available for diversion by the project and the amount of energy that <br /> <br /> <br />can be generated for such a period as 1902 to 19L1l. Since sufficient <br /> <br />records were not avll.ilable duriIli'; this period to determine the llIlUlner in <br /> <br />which the demand for the water for irrigatio!1 purposes will vary. this <br /> <br />demand was disregarded and the project was operated on the basis of pro- <br /> <br />viding a fairly uniform supply for'the generation of energy. Tha results <br /> <br />of the basic study were checked with the result" of an operation based <br /> <br />upon too specific limitation cOlltained in the contract. <br /> <br />Drawing No. 92227 shows the results of the basic study. The <br /> <br />drawing consists of three parts, the upper one of which indicates the <br /> <br />storage contents of Granby reservoir by months from 1902 to 1941. The <br /> <br />middle part of the drawing indicates the average daily tunnel diversions <br /> <br />by months for the seme period. The lower portion of the drawing indi- <br /> <br />cates the number of kilowatt-hours, in millions. generated by all the <br /> <br />power plants of the project for each month of the period. The energy <br /> <br />generated by the Eastern Slope plants. that generated by power plant No. <br /> <br />5. and the energy used for pumping are ~ll shown separately on the draw- <br /> <br />ing. <br /> <br />Summary table No. 1 ill the appendix indicates the emount of <br />