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<br />~ 21.02[7] <br /> <br />MINERAL LAW INSTITUTE <br /> <br />21-14 <br /> <br />similar abandon overlook those same tributaries if it were <br />called upon to decide whether there is "surplus" water under <br />the provisions of Article III(c) of the Compact to be used to <br />satisfy the Mexican Treaty burden. To the extent there is <br />such a surplus, the Upper Basin's Treaty obligation is dimin- <br />ished. <br /> <br />Excluding the Lower Basin's tributaries below Lee's Ferry, <br />the con,tributions from and allocations of Colorado River wa- <br />ter to the Basin states look approximately as follows as a re- <br />sult of the 1922 Compact, the Upper Colorado River Basin <br />Compact, and Arizona v. California: <br /> <br />Contribution <br />to Flow <br />(per cent) <br />1 <br />o <br />71 <br />o <br />1 <br />15 <br />11 <br /> <br />Arizona <br />California <br />Colorado <br />Nevada <br />New Mexico <br />Utah <br />Wyoming, <br /> <br />Apportionment- <br />of Water38,l <br />(per cent) <br />20.7 <br />30.6 <br />24.3 <br />2.1 <br />5.5 <br />10.8 <br />6.6 <br /> <br />[7] Colorado River Basin Project Act <br /> <br />Arizona v. California led directly to the Colorado River Ba- <br />sin Project Act of 1968.39 The day after the Supreme Court's <br />decision was issued, Arizona's Senators submitted a bill to <br />authorize the Central Arizona Project. The Colorado River <br />Basin Project Act authorized the CAP at a projected cost of <br />$1.395 billion, and it promised much more. <br /> <br />Congress recognized that the Colorado River system con- <br />tained too little water to satisfy the Mexican Water Treaty <br />burden and accommodate the growing needs of the Upper <br />and Lower Basins. It concluded that "there can be no lasting <br />solution to the water problems and disputes of the states of <br />the Colorado River Basin without the addition of more wa- <br /> <br />38.1 Getches, supra note 7, at 418. <br />39 <br />43 U.S.C. ~~ 1501 et seq. (1982). <br />