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<br />? <br /> <br />. <br /> <br />Upper Colorado River Basin Compact <br /> <br /> <br />On October 11, 1948, the five States having territory in the Upper <br /> <br /> <br />Colorado River Basin executed a compact to divide among them the water <br /> <br /> <br />apportioned to the Upper Basin by the Colorado River Compact of 1922. <br /> <br /> <br />The apportionment, Article III, allocates to Arizona the consumptive <br /> <br /> <br />use of 50,000 acre-feet of water per annum. The remainder of the <br /> <br /> <br />Upper Basin entitlement is divided on a percentage basis as follows: <br /> <br /> <br />Colorado 51.75% <br /> <br /> <br />New Mexico 11.25% <br /> <br /> <br />Utah 23.oqt <br /> <br /> <br />Wyoming 14 . oqt <br /> <br />. <br /> <br />Article VI reads as follows: <br /> <br /> <br />"The Commission shall determine the quantity of consumptive <br /> <br /> <br />use of water, which is apportioned by Article III hereof, for <br /> <br /> <br />the Upper Basin and for each state of the Upper Basin by the <br /> <br /> <br />inflow-outflow method in terms of man-made depletions of the <br /> <br /> <br />virgin flow at Lee Ferry, unless the CODDDission, by unanimous <br /> <br /> <br />action, shall adopt a different method of determination." <br /> <br />Studies made during the negotiations of the compact show that if the <br />Upper Basin is to meet its compact obligation for delivery of water at <br />Lee Ferry (Article III(d) of Colorado River Compact of 1922) without <br />impairment of its III(a) apportionment, large holdover reservoirs would <br /> <br />. <br /> <br />9 <br />