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states of Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming, approved by Herbert <br />Hoover, representative of the United States of America, and proclaimed effective by the President of the <br />United States of America, June 25, 1929. <br />(i) The term "Upper Colorado river system" means that portion of the Colorado river system above <br />Lee ferry. <br />0) The term "Commission" means the administrative agency created by article VIII of this compact. <br />(k) The term "water year" means that period of twelve months ending September 30 of each year. <br />(1) The term "acre- foot" means the quantity of water required to cover an acre to the depth of one <br />foot and is equivalent to 43,560 cubic feet. <br />(m) The term "domestic use" shall include the use of water for household, stock, municipal, mining, <br />milling, industrial and other like purposes, but shall exclude the generation of electrical power. <br />(n) The term "virgin flow" means the flow of any stream undepleted by the activities of man. <br />Article III <br />(a) Subject to the provisions and limitations contained in the Colorado river compact and in this <br />compact, there is hereby apportioned from the upper Colorado river system in perpetuity to the states of <br />Arizona, Colorado, New Mexico, Utah and Wyoming, respectively, the consumptive use of water as follows: <br />(1) To the state of Arizona the consumptive use of 50,000 acre -feet of water per annum. <br />(2) To the states of Colorado, New Mexico, Utah and Wyoming, respectively, the consumptive use <br />per annum of the quantities resulting from the application of the following percentages to the total quantity <br />of consumptive use per annum appropriated in perpetuity to and available for use each year by upper basin <br />under the Colorado river compact and remaining after the deduction of the use, not to exceed 50,000 acre - <br />feet per annum, made in the state of Arizona. <br />State of Colorado 51.75 per cent, <br />State of New Mexico 11.25 per cent, <br />State of Utah 23.00 per cent, <br />State of Wyoming 14.00 per cent. <br />(b) The apportionment made to the respective states by paragraph (a) of this article is based upon, <br />and shall be applied in conformity with, the following principles and each of them: <br />(1) The apportionment is of any and all man -made depletions; <br />(2) Beneficial use is the basis, the measure and the limit of the right to use; <br />(3) No state shall exceed the apportioned use in any water year when the effect of such excess use, as <br />determined by the commission, is to deprive another signatory state of its apportioned use during the water <br />year; provided, that this subparagraph (b) (3) shall not be construed as: <br />(i) Altering the apportionment of use, or obligations to make deliveries as provided in article XI, XII, <br />XIII or XIV of this compact; <br />(ii) Purporting to apportion among the signatory states of such uses of water as the upper basin may <br />be entitled to under paragraphs (f) and (g) of article III of the Colorado river compact; or <br />(iii) Countenancing average uses by any signatory state in excess of its apportionment. <br />(4) The apportionment to each state includes all water necessary for the supply of any rights which <br />now exist. <br />(c) No apportionment is hereby made, or intended to be made of such use of water as the upper basin <br />may be entitled to under paragraphs (f) and (g) of article III of the Colorado river compact. <br />(d) The apportionment made by this article shall not be taken as any basis for the allocation among <br />the signatory states of any benefits resulting from the generation of power. <br />Article IV <br />In the event curtailment of use of water by the states of the upper division at any time shall become <br />necessary in order that the flow at Lee ferry shall not be depleted below that required by article III of the <br />Colorado river compact, the extent of curtailment by each state of the consumptive use of water apportioned <br />