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<br />water, a requisite to mature late season crops and to permit a well rounded <br />cropping program, is quite obvious. <br /> <br />Quality of Water <br /> <br />The quality of the water available for project use is excellent. <br />. Relatively minor amounts of dissolved material are found in the supply, <br />there being less than 70 parts per million of dissolved solids for flows <br />below 150 cfs with an indicated sodium content of about 5 percent of the <br />cations. <br /> <br />('I') <br />In <br />~ <br />('J <br /> <br />. , <br />~~., <br /> <br />c) <br /> <br />Siltation is of no moment in the Conajos River Basin; therefore stor,.. <br />age capacity to retain silt nced not be provided in any storage reservoir. <br />It is cstimated that not more than 400 acre-feet of Platoro1s capacity <br />would be lost in 50 years. <br /> <br />Diversion Demands <br /> <br />Non-District Lands. The lands served by the L03 Pinos, San Antonio <br />and CDneJos Rivers, which did not elect to become a part of the project <br />area, were allowed historic diversions in the water supply studies. Where <br />records of these diversions were not available, they Were extended by <br />direct correlation vnth streamflow. <br /> <br />."-. <br /> <br />District Demands. utilizing temperature records at Manassa, Colorado, <br />Which is within the district, the LowrY-Johnsor, heat unit method was used <br />to determine the annual consumptive use of l.92 feet-depth. This was <br />corrected hy the effective precipitation on the project lands and resulted <br />in an annual average consumptive use requirement of irrigation water of <br />1.$0 feet-depth. This requirement was then distributen throughout the <br />irrigation season according to standard procedures and the expressed desires <br />of representative farmers in the project area. An ideal diversion demand <br />of 248,000 acre-feet was obtained by adding. expected losses to the consump', <br />tive Use of irrigation water and providing for hoth beneficial and non- <br />beneficial consumptive Use hy the entire l16,00c acres of project lands; the <br />demand and its distribution are: <br /> <br />Month <br /> <br />J an uary <br />February <br />March <br />April <br />May <br />.Tune <br />July <br />Lugust <br />September <br />October <br />I'lovember <br />December <br />Total <br /> <br />Demand in Acre-Feet <br /> <br />o <br />o <br />o <br />26,000 <br />30,000 <br />61,000 <br />6_~,0(lO <br />46,000 <br />15,000 <br />5,coo <br />o <br />o <br />2413,000 <br /> <br />23 <br />