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WFAC*DIV <br />IMDIV = (3) <br />j,m <br />j <br />m <br />m=1 <br />D <br />WFAC*DIV <br />BYDIV = (4) <br />d j, d <br />j <br />d=1 <br />where EXDIV , IMDIV , and BYDIV are the total export, import, and bypass diversions (acre- <br />j j <br />j <br />feet per month), respectively; DIV , DIV , and DIV are the export, import, and bypass <br />j,x j,m j,d <br />diversions (acre-feet per month) for ditch structures x, m, and d, respectively; and X, M, and D <br />are the total number of export, import, and bypass ditch structures, respectively. <br />Determine the historical time series for total municipal depletions upstream of the USGS <br />? <br />gaging station: <br />o <br />WFAC*DIV <br />MUDPLN = (1.0 - MFAC ) * (5) <br />o j, o <br />j j <br />o=1 <br />where MUDPLN is the total monthly upstream municipal depletion (acre-feet per month), <br />j <br />MFAC is the monthly municipal return flow factor, WFAC is the adjustment factor for the <br />j o <br />municipal ditch structure o, and O is the total number of municipal ditch structures. <br />For each selected upstream consumptive use sub-basin and for each year of the study period, <br />? <br />determine the annual irrigation consumptive use: <br />12 <br />UCU <br />ACU =WFAC * AC (6) <br />b,m <br />b,y b b <br />m=1 <br />where ACU is the upstream annual irrigation consumptive use (acre-feet per year) for the <br />b,y <br />upstream basin b, UCU is the unit consumptive use (feet per month), WFAC is the <br />b,m b <br />adjustment factor for geographic variance, and AC is the upstream acreage for the basin <br />b <br />(acres). January is represented for m=1 and December corresponds to m=12. For each selected <br />upstream basin, there will be a value of ACU for each year, y, of the study period. <br />Determine time series for upstream monthly streamflow depletion as a function of the annual <br />? <br />irrigation consumptive use and monthly depletion distribution coefficients: <br />B <br />DCOEF*ACU <br />IRDPLN = (7) <br />b,j b, y <br />j <br />b=1 <br />7 <br />A275 01.09.95 1.15-15 Hyre, Fosha <br />