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<br />.. <br /> <br />\ <br />~\ <br />w ' <br />N <br /> <br />COLORADO-WAl'ER-CONSERVA-T.lON-BOARD- <br />102 Columbine Building <br />1845 Sherman Street <br />Denver, Colorado 80203 <br /> <br />~'::, <br /> <br />Feburary 4, 1971 <br /> <br />M E M 0 RAN DUM <br /> <br />TO: Mr, R. J; Moses, Attorney for the Board. <br /> <br />FRON: <br /> <br />Duane D. Helton, Water Resource Engineer III. <br /> <br />,</ <br />-!?' <br /> <br />SUBJECT: Hater froni proposed purchase of shares of Las Animas Consolidated <br />Canal Company to be used to replenish evaporation from a pemanent <br />poo I in John Martin Reservoir. <br /> <br />The Las Animas Consolidated Canal 'Company has, tHO decreed ,,,a tel' rights <br />of particular value" 1'1'e first is for 22.3 cfs and has an appropriation'date <br />of April 10, 1875. The second right for 22.0 cfs has an appropriation date of <br />December 3, 1884, There are 565 outstanding shares in the company, and each is <br />supposcd to irrigate 10 acres, <br /> <br />. <br /> <br />The Las Animas Consolidated Canal Company and the Consolidated Extension <br />Canal Company are often confused but are tHO separate entities. The Consolidated <br />Extension Canal gets water from three sources: 1) 5.5 cfs from La~ Animas Town <br />Ditch Company (275 shares out of 1,900), 2) 95 shares of Las Animas Consolidated <br />Canal Company, and 3) an obscure amount of Hater from the Highland Canal (diversions <br />from the Purgatohe River). Th~ Consolidated Extension Canal 'Company has 1,233?:2 <br />shares outstanding, and each is supposed to irrigate two acres. The Las' Animas <br />Consolidated Canal Company diverts and carries water for Consolidated Extension <br />Canal. The actual operation is that each company gets the crnnbined supply on a <br />rotation basis - four days for the Las Animas Consolidated Canal Company and two <br />days for the Consolidated Extension Canal Company. <br /> <br />The attached table sUITmarizes the results of computations made to <br />predict the behavior of the proposed permanent pool when waterJrom 282.5 shares <br />of the Las Animas Consolidated Canal Company (50% of the total) is used to <br />replace evaporation losses under the historic conditions of conservation pool <br />storage and evaporation from 1949 through 1968. The computations were made in the <br />same manner as those for the Las Animas Town Ditch with one exception. The <br />monthly credit used was 'the smaller of consLnTlptive use for 2,825 acres or 50% of, <br />the historic headgate diversions. <br /> <br />In a r'ew days I should have computations which predict the behavior- of <br />the permanent pool when water frrnn percentages of the total shares rangi~g/{rorn <br />30 to 100 are used to replace evaporation.' <br /> <br />-e- DDH:;.lf\l____ <br />Ene. C/ <br />