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<br />OGJ417 <br /> <br />-28- <br /> <br />Export Diversions <br />From Colorado River System <br />For Use in Co 10radO <br />(Aore Feet).. <br /> <br />U.S.B.R. <br /> <br />c.w.c.n. <br /> <br />., <br /> <br />Existing Export Diversions <br /> <br />102,000 <br /> <br />135,000 <br /> <br />. <br /> <br />Allowances for Projeots now <br />aul;horized, under construction <br />and in operation <br /> <br />420,000 <br /> <br />J.e4,ooo <br />1,626,000 (a) <br /> <br />Potential Projects (increase) <br /> <br />Totals <br /> <br />1,267,000 <br />1,789,000 <br /> <br />2,255,000 <br /> <br />.. Quantities based on long-time average or nonnal conditions, - <br />in the average year of a drouth cycle such as 1931-1940 the <br />exportation, would approximate aboul; 80 percent of normal <br />quantities. <br /> <br />(a) Estimates as previously discussed by individual projects. <br />Quantities have beon cheoked with Denver Regional office <br />for importations to Arkansas and South Platte valleys, and <br />have been taken from Report for importations to San Luis <br />Valley. <br /> <br />, <br /> <br />Colorado suggests that the Report be revised to disclose that <br />opportunities and probabilities for export diversions from the Colorado <br />River systED for use in Colorado aggregate 2,255,000 acre feet annually <br />under normal climatic conditions, and about 1,800 ,000 ac re feet annually <br />during drouth cyc les such as 1931-1940; and that such exportation pro- <br />jects in Colorado have been and are being planned and designed upon the <br />basis that water and power users are expected to repay the costs of con- <br />struction other than proper non-reimbursable allocations to flood control, <br />silt control, reoreational benefits, eto. In the event that competitive <br />projects are listed or described in the Report upon a different repayment <br />basis, Colorado will expeot the Report to diso10se that export diversions <br />from the Colorado River system are limited to quanti ties above mentioned <br />by the construction costs and repaymelI!; requirements of such developments <br />but that substantialq greater amounts of water are possible of exporta- <br />tion by means of longer tunnels and greater pump-lifts if construction <br />costs are to be disregarded or materially subsidized. <br /> <br />i- <br /> <br />50. The estimates shown in the Report for the depletions in the Up- <br />per Basin incident to main-stem reservoir evaporation losses, aggregating <br />1,040,000 acre feet annually during long-time average or normal conditions, <br />and averaging 831,OtJO aore feet per year during drouth cycles such as 1931- <br />.1940, are not accompanied by detailed information oonoerning either ex- <br />posed water surfaoe areas or applicable evaporation rates. For that reason <br />