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<br />. <br /> <br />Exhibit C, A,)pendix 1em',,"' He:ll'incs) is 0ffer"o. to show the <br /> <br />mountainous a11(I plateail che.racter .)f '/'Iestern Golo:eado which <br /> <br />limit tn9 ac:ee~ge of i:erigable land. The attached top00raph- <br /> <br />ical birdseye view of Colorado is also offered for the sawe <br /> <br />reason. (See Ji.~j'Jibit D, J>))endix Denver Hearin,ss) <br /> <br />BASIS OF CCHSU1,u.TIVi!; US;;: OF 1.3 ACRE-FBi};' J?Z8 J',CRji; iEI; YLLR: <br /> <br />Consumptive use is herein defined es the net :eiver loss <br /> <br />of water incident to irrigation over la;ge areas and is deter~ <br /> <br />mined by fjleaSuring the inflow and outflow of a river basin <br /> <br />over a ~eriod of years dividing the loss by the acreage <br /> <br />irrigated. It takes all factors of use into consideration. <br /> <br />TJ-:.e annual ave:eaGe consum,)ti ve use of 1.3 sc're-feet <br /> <br />'. <br />- . <br /> <br />of water per acre herein used io" \!este~n Slope lands is based <br /> <br />on follo~inG data: <br /> <br /> <br />(1) An annual average dive"sion duty at the canal head- <br /> <br /> <br />gate of 2,0 ac~e-feet )er acre ~ith Z5~ return flow, or 0.7 <br /> <br />acre-feet return. <br /> <br />(2) The avera6e annual consumptLon o~ 1.40 a~re-feet <br /> <br />per acre for a lO-yea~ period of ap)~OXimat81y 1,000,000 acres '; <br />of irrigated land in the ~outh ilatte BaSin, Colo"ado, cove~- <br /> <br />ing wet and dry ye2~S, intensive and madioc~e culture. <br /> <br />This low consumption is eA~lained by the fact that in <br /> <br /> <br />the South Platte Basin the return flow or seepage water from <br /> <br />. ~....l <br /> <br />- <br /> <br />irr igati cn appro~(imat as 1,000,000 ac:re-feet annually uod_ <br /> <br /> <br />1,000,000 acre-feet of storabe capacity are used in equalizin~ <br /> <br />D <br />