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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />r'l_ ,", (",\ l t ') , <br />,~ . I <br /> <br />8. ' Two alternatives or scenarios have been identified by review aqd <br />screening of a number of potential alternatives. These two scenarios are <br />presented .herein for augmenting the surface flow during drought years in <br />the most seri~usly effected ditches and canals; (a) direct discha~ge of pump~d <br />ground water from existing or new wells located near the ditch or canal where <br />the flow is being supplemented, (b) a temporary transfer of surface water <br />from a ditch which has high delivery potential to one needing supplemental <br />water during drought years through an .acceptedagreement between the involved! <br />ditch compani.s. The water transferred from the ditch with a high delivery <br />. . <br /> <br />potential would be replaced by pumped ground water from wells located near <br />the ditch. Several specific transfer arrangements are described in Chapter Vl. <br />9. The operation of the irrigation systems in Beebe Draw are <br />considerably d~fferent than in South Platte Valley due to the existence of <br />Barr and Milton storage reservoirs. The amounts of water available during <br />droughts depends upon the amount of water in. storage in the reservoir at the <br />beginning of each irrigation season. To supplement the surface flow in the <br />ditches below Barr and Milton neservoirs, increased well pumping from existing <br />wells and/or new wells located near the ditches in the areas indicated in <br />Figure VI-4 is recommended. <br />10. The mapping phase of the study has produced a series of maps, <br />aerial photos overlaid on U.S.G.S. quad maps at a one inch = 2,000 <br />foot scale, which illustrates the following: <br />(a) The location of all major ditch and canal systems in the <br />South Platte Valley and Beebe Draw within the study area. <br />(b) The irrigated areas under the ditch systems and irri- <br />. gation wells. <br />(~) The location of "all" irrigation wells with a yield of <br />. at least 300 gpm,and an index of the wells presenting <br /> <br />,)' <br /> <br />^..',","f <br />j'J " <br />, <br /> <br />i-, <br />'j; <br />if <br /> <br />., <br />H <br /> <br />i< ',_ <br />fL- -"". <br /> <br />:111 <br /> <br /> <br /> <br />, < <br /> <br />{ <br /> <br /> <br />1 <br />, <br /> <br />-~E <br />, <br />~ <br />. )1 <br />Jl <br /> <br /> <br />