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<br />" <br /> <br />Arizona from mainstream water. Finally, the Boulder <br />Canyon Act authorized the Secretary of the Interior to <br />execute contracts for water made available by Hoover Dam, <br />subject to the terms of the 1922 compact. <br />3. The Mexican Treatv of 1944 <br />Article X of the "Treaty... Relating to <br />Waters of the Colorado and Tijuana Rivers and of the Rio <br />Grande" ("Mexican Treaty") guarantees an annual delivery <br />of 1. 5 m. a. f. of water to Mexico and an additional amount <br />up to a total of 1.7 m.a.f. if there is a surplus. In <br />the event of extraordinary drought or serious accident <br />to the United States' irrigation system, the Mexican <br />Treaty allows the United States to reduce the delivery <br />below 1.5 m.a.f. in the same proportion as consumptive <br />uses in the United States are reduced. <br />4. The Upper Colorado River Basin C01llJ)act of <br />1948 <br />The Upper Colorado River Basin Compact of <br />1948 apportions the water allocated to the Upper Basin <br />by the 1922 Compact as follows: Colorado, 51.75%: Utah, <br />23%: Wyoming, 14%: and New Mexico, 11.25%. Arizona, <br />whose northeast corner drains into the Upper Basin, was <br />given a flat 50,000 acre feet per year. <br /> <br />-5- <br />