43 U.S. Code § 1524 - Water furnished from Central Arizona Project
Unless and until otherwise provided by Congress, water from the Central Arizona Project shall not be made available directly or indirectly for the irrigation of lands not having a recent irrigation history as determined by the Secretary, except in the case of Indian lands, national wildlife refuges, and, with the approval of the Secretary, State-administered wildlife management areas.
Each contract under which water is provided under the Central Arizona Project shall require that (1) there be in effect measures, adequate in the judgment of the Secretary, to control expansion of irrigation from aquifers affected by the irrigation in the contract service area; (2) the canals and distribution systems through which water is conveyed after its delivery by the United States to the contractors shall be provided and maintained with linings adequate in his judgment to prevent excessive conveyance losses; and (3) [Repealed. Pub. L. 102–575, title XXXVII, § 3710(k), Oct. 30, 1992, 106 Stat. 4751]. Such contracts shall be subordinate at all times to the satisfaction of all existing contracts between the Secretary and users in Arizona heretofore made pursuant to the Boulder Canyon Project Act (45 Stat. 1057) [43 U.S.C. 617 et seq.].
The Secretary may require in any contract under which water is provided from the Central Arizona Project that the contractor agree to accept main stream water in exchange for or in replacement of existing supplies from sources other than the main stream. The Secretary shall so require in the case of users in Arizona who also use water from the Gila River system to the extent necessary to make available to users of water from the Gila River system in New Mexico additional quantities of water as provided in and under the conditions specified in subsection (f) of this section: Provided, That such exchanges and replacements shall be accomplished without economic injury or cost to such Arizona contractors.
In times of shortage or reduction of main stream Colorado River water for the Central Arizona Project, as determined by the Secretary, users which have yielded water from other sources in exchange for main stream water supplied by that project shall have a first priority to receive main stream water, as against other users supplied by that project which have not so yielded water from other sources, but only in quantities adequate to replace the water so yielded.
 So in original.
This chapter, referred to in subsecs. (b)(1), (f)(1), was in the original “this Act”, meaning Pub. L. 90–537, Sept. 30, 1968, 82 Stat. 885, as amended, known as the Colorado River Basin Project Act, which enacted this chapter and sections 616aa–1, 620a–1, 620a–2, 620c–1, and 620d–1 of this title, amended sections 616hh, 620, and 620a of this title, and enacted provisions set out as notes under sections 620, 620k, and 1501 of this title. For complete classification of this Act to the Code, see Short Title note set out under section 1501 of this title and Tables.
The Boulder Canyon Project Act, referred to in subsec. (c), is act Dec. 21, 1928, ch. 42, 45 Stat. 1057, as amended, which is classified generally to subchapter I (§ 617 et seq.) of chapter 12A of this title. For complete classification of this Act to the Code, see section 617t of this title and Tables.
Subsec. (g) of this section, which restricted the use of water from the projects authorized by this chapter for the production of basic agricultural commodities on newly irrigated lands for a period of ten years from Sept. 30, 1968, was omitted.
2004—Subsec. (f)(1). Pub. L. 108–451, § 212(d)(1), added par. (1) and struck out former par. (1) which read as follows: “In the operation of the Central Arizona Project, the Secretary shall offer to contract with water users in New Mexico for water from the Gila River, its tributaries and underground water sources in amounts that will permit consumptive use of water in New Mexico of not to exceed an annual average in any period of ten consecutive years of eighteen thousand acre-feet, including reservoir evaporation, over and above the consumptive uses provided for by article IV of the decree of the Supreme Court of the United States in Arizona against California (376 U.S. 340). Such increased consumptive uses shall not begin until, and shall continue only so long as, delivery of Colorado River water to downstream Gila River users in Arizona is being accomplished in accordance with this chapter, in quantities sufficient to replace any diminution of their supply resulting from such diversion from the Gila River, its tributaries and underground water sources. In determining the amount required for this purpose full consideration shall be given to any differences in the quality of the waters involved.”
Subsec. (f)(2), (3). Pub. L. 108–451, § 212(d)(2), (3), redesignated par. (3) as (2) and struck out former par. (2) which read as follows: “The Secretary shall further offer to contract with water users in New Mexico for water from the Gila River, its tributaries, and underground water sources in amounts that will permit consumptive uses of water in New Mexico of not to exceed an annual average in any period of ten consecutive years of an additional thirty thousand acre-feet, including reservoir evaporation. Such further increases in consumptive use shall not begin until, and shall continue only so long as, works capable of augmenting the water supply of the Colorado River system have been completed and water sufficiently in excess of two million eight hundred thousand acre-feet per annum is available from the main stream of the Colorado River for consumptive use in Arizona to provide water for the exchanges herein authorized and provided. In determining the amount required for this purpose full consideration shall be given to any differences in the quality of the waters involved.”
1992—Subsec. (c)(3). Pub. L. 102–575 repealed cl. (3) which read as follows: “neither the contractor nor the Secretary shall pump or permit others to pump ground water from within the exterior boundaries of the service area of a contractor receiving water from the Central Arizona Project for any use outside said contractor’s service area unless the Secretary and such contractor shall agree, or shall have previously agreed, that a surplus of ground water exists and that drainage is or was required.”