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<br />1132 <br /> <br />Pueblo Reservoir <br /> <br />. <br /> <br />Reservoir Inflow <br /> <br />Inflow to Pueblo Reservoir is broken into tv.o sour,Ces: (1) natural flow <br />is oonsidered the native flow of the Arkansas River at Pueblo Dam plus <br />upstream reservoir water being passed downstream, :and (2) Project water <br />for storage in Pueblo Reservoir. <br /> <br />Upstream reservoir water, inCluding Project water sold to the South- <br />eastern Cblorado Water Cbnservancy District, is a small percent of the <br />total flow of the Arkansas River at Pueblo Dam therefore it is ronsidered <br />part of the natural flow. <br /> <br />A probability curve for the natural inflow to Pueblo Reservoir was <br />=nputed by the IDg Pearson rrethod and is shown graphically on Exhibit <br />3. <br /> <br />Annual inflow of a IT'agnitude that is equaled or exceeded 50 percent of <br />the time was oonsidered the rrost probable inflow, that with a 90 percent <br />chance of being equaled or exceeded was considered to be the reasonable <br />minimum, and that with only a 10 percent chance of being equaled or <br />exceeded was considered the reasonable IT'aXimum. <br /> <br />The annual inflow was distributed rronthly according to the averages <br />based on historical records for the years 1955 through 1974. <br /> <br />. <br /> <br />Winter Water Storage Program <br /> <br />'l'h3 di tell CCIlq?anies below Pueblo Dam failed to reach an agreerrent for a <br />Winter Water storage Program for water year 1978. <br /> <br />Minimum Reservoir Release <br /> <br />The natural flow of the Arkansas River will be passed through the reservoir <br />except for that water storable by decree. Before any natural flow can <br />be stored in Pueblo Reservoir, sufficient water must be in the Arkansas <br />River to assure filling of the conservation pool of John Martin Reservoir, <br />and all senior rights between Pueblo Reservoir and John Martin Reservoir <br />must be satisfied. Project water released froi\l Turquoise Lake to rreet <br />mi.ni.Irun flow requirerrents in Lake Fork Creek will be stored in Pueblo <br />Reservoir. <br /> <br />Reservoir q:>eration <br /> <br />Water stored in Pueblo Reservoir under teIlporary storage contracts will <br />be released after an order has been placed with the Division Engineer. <br /> <br />. <br /> <br />12 <br />