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<br />72 West, 6th P.M., Custer County, Colorado. App,Ticants pro- <br />pose to remove ~rom_irrigation the S~$SW}NW} of said-section _ <br />- - 30 and develop this 9:9 acres as a .gravel pit.. - <br />Applicants do not presently know the rate of conversion <br />of this land to gravel pit. It is expected that the pit will <br />be a minimum of 14 feet deep and ground water will be exposed. <br />]:n order to prevent injury to other water right owners, appli- <br />cants will at this time provide augmentation water for the <br />entire 9.9 acres. <br />The evaporation at the gravel pit site, elevation 7900 <br />feet, is calculated to be 1.61 feet per year, based on Tech- ` <br />it <br />njral Paper Ne. .37, U.S. Department of Commerce, ;leather °u- <br />r•eau, 1959, corrected for natural precipitation. This amounts <br />t:o 1.67 x 9.9 = 16.53 acre feet. <br />The consumptive use of native hay, or grass, at the al- <br />titude of 7,900 feet has been found to be on the order of <br />16.9 to 21.6 inches, according to U.S. Department of Agri- <br />culture publication ARS-W-6, February 1974. Removing the <br />4.9 acres from irrigation results in a saving of 9.9 x 21.6 <br />12 <br />= 17.82 acre feet, or a 1.29 acre feet net savings in water <br />by the conversion of use. Upon approval of this application, <br />applicants will remove from irrigation 9.9 acre of irriga- <br />ted native hay and monument the corners of this tract, de- <br />scribed as follows: SE}SWsNW; Section 30, Township 22 South, <br />Range 72 West, 6th P.M. <br />Applicants own a one-tenth interest in the Risser and <br />Locke Ditch, Priority No. 134 for 5.11 c.f.s. and Appropri- <br />ation date of June 1, 1875. Average diversions by this ditch <br />for the 10-year period 1977-1986 have been 984 acre feet or <br />14x.52 a.f. per second foot and 19.45 a.f. per 0.10 c.f.s. <br />Aoplicants will. therefore, abandon to the stream 0.085 c.f.s. <br />of their ownership to offset any injury to other water right <br />owners on the stream. <br />This operation will result in a net gain to the stream <br />until such time as the full 9.9 acres of gravel pit is ex- <br />cavated, at which time equilibrium will be achieved. <br />Applicants request appr al of this plan of augmentation <br />and issuance of a decree th re-or. <br />~, ~ <br />ra m. Ka <br />~ ,. l <br />1 ~ ~: <br />Jg.annette Yaklich ~: <br />Shangra La Ranch - <br />Westcliffe, Colorado 81252 <br />