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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 />000350 <br /> <br />2.2.1.3 Irril!ation Use Efficiencies and Return Flow Schedules. For all irrigation <br /> <br />diversions, the use efficiencies presented as a percentage of the amount of diverted <br /> <br />quantity which is consumed on a monthly basis were assumed to be: <br /> <br />May <br />37 <br /> <br />Use Efficiencv. in percent <br /> <br />Julv August September <br />45 67 67 <br /> <br />67 <br /> <br />June <br /> <br />October <br /> <br />47 <br /> <br />The May-June values came from a separate return flow analysis that considered water <br /> <br />right diversions, irrigated acreage, consumptive requirements and non-beneficial losses. <br /> <br />July-October efficiencies were determined by model calibration to gaged streamflows. Use <br /> <br />efficiencies of 16 percent in the winter and 46 percent in the summer were assumed for <br /> <br />municipal demands at Baggs and Dixon. <br /> <br />For all irrigation diversions, the return flow schedule used was: <br /> <br />50% of total return flow - during month of diversion <br /> <br />30% of total return flow - 1 month after diversion <br /> <br />20% of total return flow - 2 months after diversion <br /> <br />15 <br />