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<br />42 <br /> <br /> <br />Conclusions from Hydrology Studies <br /> <br />1. The results of the studies are principally for comparison <br />of the two sites. The scope of the studies, the length of <br />study period, and other aspects permits only approximate <br />determination of such things as reservoir size and yield, etc. <br /> <br />2. Construction of a main stem storage reservoir at either the <br />Weld County or Narrows sites provides a facility for greatly <br />increasing the beneficial use of the basin water supply. <br /> <br />3. Neither site has a clear-cut hydrologic advantage over the <br />other site under either historic or expected 1990 flow <br />conditions. There is little difference between the efficiency <br />of use of remaining river diversion shortages. <br /> <br />4. Storage at the Narrows site provides a more adequate supply <br />for the lower basin; while storage at the Weld County site <br />provides a more adequate supply for the midsection of the <br />basin. <br /> <br />5. <br /> <br />The quantity of project water exchanged to Two Forks Reservoir <br />under average annual conditions (12,200 acre-feet from the <br />Narrows site, and 13,000 acre-feet from the Weld County site) <br />'provides insurance for consummating the exchanges shown in <br />our ideal routing studies. <br /> <br />6. The results of our studies indicate that rather substantial <br />quantities ,of water could be diverted under the flow conditions <br />by ditches ;ocated between Denver and either downstream <br />reservoir site. These diversions were prompted by the concept <br />that "highest use is best use." Approximately one-half of <br />these diversions can be accomplished by exchange. The remaining <br />diversions could be viewed as out-of-priority diversions; <br />however, construction of main stem storage at either considered <br />site will provide an inducement for more beneficial Use of the <br />basinl3 wat,er supply which in tUrn will tend, to a degree, to <br />replace the historic priorities used to administer the flows <br />in the river. ' <br /> <br />. <br /> <br />7. While additional storage provides the opportunity for greater <br />use of the basin's water supplies, such items as canal lining, <br />more complete integration of pump development with gravity <br />flOWS, effiCiency of use of water on the farm and other water <br />conservation measures, should not be overlooked. The positive <br />