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<br />e <br /> <br />e <br /> <br />e <br /> <br />l'O~!90 <br /> <br />Difference between gaged flow in C and calculated = 50,160 AF which is the <br />ungaged tributary inflow between Navajo Dam and Bluff, Utah. All this inflow most <br />likely comes from New Mexico and Utah. Arizona most likely now utilizes all that <br />is available to it from the Upper Basin and is probably limited more by supply than <br />uppet basin apportionment. <br /> <br />E. Conclusion <br /> <br />The USBR virgin flow of the San Juan River at Bluff, Utah between 1971-1985 is <br />2,143,267 AF. Of this 1,813,862 AF (84.63%) is measured leaving CDlorado at the Stateline <br />gages noted and 3.55% is consumptively used in Colorado. This accounts for 88.18% of the <br />total San Juan at Bluff Natural Flow. There remains 253,218 AF to be accounted for. The <br />Consumptive Uses in New Mexico are 313,053 AF, in Utah 56,780 AF and 30,500 AF in <br />Arizona for a total of 400,333 AF. Therefore, there ShDUld be 147,115 AF more water in <br />the natural flows to achieve mass balance. This difference is about a 7% errDr and within <br />the accepted. error of most measurements. <br /> <br />Applying these percentages to the IDng term (1906-1985) natural flow of 2,198,000 <br />AF indicates approximately 1,938,200 AF will originate in Colorado on average and the <br />balance of 259,800 AF in Arizona, New Mexico and Utah combined. <br /> <br />DRS/bj <br /> <br />bj269.tpl <br /> <br />I <br />t-,~,,~ <br />