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<br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />0914 <br /> <br />historicsJ. seasonal depletd.onsof such SUIlIIIler nows. However. on page 54 <br />,of Appendix D it is stated that in the absence of suffioient stream flew <br />reoords to dete1'llline quantities of waterava:\.lable by partialaummer <br />regulation. the'water supply for step "0" in this report inoludes o~ <br />the quantity sf winter flows for regulation. With reg~d to condition <br />"c". it ill suggested t,hat the repart should show without ambiguity. the <br />definite Prlllposal with regard to this ,oondition. <br /> <br />ConditioJlI.! "d"a:nd He" propose 'further storage of flood. flows originat- <br />ing above the d.amSite and further regulation of ather stream flows in <br />Trinidad Reservoir when a:nd if future stream flOlr reoords show that such <br />storage md regulatiOn would not cause material depletion of the water <br />supplies available for' dmmstream uses. or provided that 'sutable replace- <br />ment be made to compensate far the depletions which future stream flows <br />may indicate. <br /> <br />The report states' that operation of the conservation capacity in <br />Trinidad Rese1'Voir for irrigation in acoordance with oanditions "a", <br />"b" md "0" ,oanbe aoo,omplishedurider the provisions of ex1.sting,law <br />and the ArkanSaS Riyer Compaot, and that such operation will not inter- <br />ferewiththe utilization of the oonservation oapaoity of John Martin <br />Reservoir for the purposes speoified in the Arkmsas River Compaot. The <br />report also states that operation of the Trinidad Reservoir for irrigation <br />in aooordanoe with oonditions "a", "b" md "0" is eoonomioally justified. <br />and would accomplish as one oLits results the availability of. a regulated <br />and supplemental water supply for, 19.500 aores of presently ii'rigated laild <br />in the PUrgatoire River Valley below Trinidad Reservoir. <br /> <br />With respect to the statement. relative to the effeot of the operation <br />on the provisions of existj.ng law and the Arkansas River Compact, it is <br />suggested that a study be made in Support of. the statement, based on the <br />best available data, t,o estimate the amount of depletion of the water <br />supply presently available to water users dOl'instream from the proposed <br />project, which would result from the operation under conditions "a", "b" <br />and "0". <br /> <br />With regard to the statement as to the contemplated water supply an~ <br />expected eoonomic benefits; it is further suggested that an operation <br />study under conditions "a", "b" and "0", similar to that for the oonditional <br />five-step development as shown,in Table No. 19, Appendix D, be included as <br />a part of the report or appendioes. Suoh a study would more clearly , <br />indioate the ,degree of regulation proposed under condition "0" and the <br />amounts of inipplemental water whioh the project might make available to <br />alleviate present shortages, if operated according to the three conditions. <br /> <br />The eoonomic analyses should also clearly show the agricultural, <br />benefits to be expected as a result of the operation under oonditiOlls <br />''a''. "b" and "0" with the 'water supply as determined by the suggested <br />,operation study. <br /> <br />If the studies suggested above are made, relative to outlet sluice <br />capacity. stream depl~tions, water supply an:! agricultural benefits. <br /> <br />APPENDIX G <br />Exhibit No. 12 <br />Page 3 of 4 <br /> <br />~, <br /> <br />,', <br /> <br />