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, 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, 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.”

Pub. L. 102–575, title XXXVII, § 3710(k), Oct. 30, 1992, 106 Stat. 4751, provided in part that: “This subsection [amending this section] does not authorize transportation of water pumped within the exterior boundary of a Federal reclamation project established prior to September 30, 1968, pursuant to the Act of June 17, 1902 (32 Stat. 388; 43 U.S.C. 391) [see Short Title note set out under section 371 of this title], as amended and supplemented, across project boundaries.”