Title 43Public LandsRelease 119-73

§1551 Construction of Colorado River Basin Act

Title 43 › Chapter CHAPTER 32— - COLORADO RIVER BASIN PROJECT › Subchapter SUBCHAPTER V— - GENERAL PROVISIONS › § 1551

Last updated Apr 6, 2026|Official source

Summary

Protects existing Colorado River agreements and the court order from being changed. That includes the Colorado River Compact, the Upper Colorado River Basin Compact, the 1944 Water Treaty with Mexico, the Supreme Court decree in Arizona v. California, and, unless this law says otherwise, the Boulder Canyon Project Acts and the Colorado River Storage Project Act. The Secretary must do two things: every five years starting October 1, 1970, make reports on annual water use and losses with a state-by-state and major-tributary breakdown, done with the lower basin states and the Upper Colorado River Commission and sent to the President, Congress, and the Governors who signed the Compact; and make all Colorado River water delivery contracts depend on water actually being available under the Compact. All federal officers and agencies must follow these laws when storing, releasing, operating, or maintaining Colorado River reservoirs and related works. If a federal officer or agency fails to comply, any affected State may sue in the U.S. Supreme Court, and the United States agrees to be joined as a party in that suit.

Full Legal Text

Title 43, §1551

Public Lands — Source: USLM XML via OLRC

(a)Nothing in this chapter shall be construed to alter, amend, repeal, modify, or be in conflict with the provisions of the Colorado River Compact (45 Stat. 1057), the Upper Colorado River Basin Compact (63 Stat. 31), the Water Treaty of 1944 with the United Mexican States (Treaty Series 994; 59 Stat. 1219), the decree entered by the Supreme Court of the United States in Arizona against California and others (376 U.S. 340), or, except as otherwise provided herein, the Boulder Canyon Project Act (45 Stat. 1057) [43 U.S.C. 617 et seq.], the Boulder Canyon Project Adjustment Act (54 Stat. 774), [43 U.S.C. 618 et seq.], or the Colorado River Storage Project Act (70 Stat. 105) [43 U.S.C. 620 et seq.].
(b)The Secretary is directed to—
(1)make reports as to the annual consumptive uses and losses of water from the Colorado River system after each successive five-year period, beginning with the five-year period starting on October 1, 1970. Such reports shall include a detailed breakdown of the beneficial consumptive use of water on a State-by-State basis. Specific figures on quantities consumptively used from the major tributary streams flowing into the Colorado River shall also be included on a State-by-State basis. Such reports shall be prepared in consultation with the States of the lower basin individually and with the Upper Colorado River Commission, and shall be transmitted to the President, the Congress, and to the Governors of each State signatory to the Colorado River Compact; and
(2)condition all contracts for the delivery of water originating in the drainage basin of the Colorado River system upon the availability of water under the Colorado River Compact.
(c)All Federal officers and agencies are directed to comply with the applicable provisions of this chapter, and of the laws, treaty, compacts, and decree referred to in subsection (a) of this section, in the storage and release of water from all reservoirs and in the operation and maintenance of all facilities in the Colorado River system under the jurisdiction and supervision of the Secretary, and in the operation and maintenance of all works which may be authorized hereafter for the augmentation of the water supply of the Colorado River system. In the event of failure of any such officer or agency to so comply, any affected State may maintain an action to enforce the provisions of this section in the Supreme Court of the United States and consent is given to the joinder of the United States as a party in such suit or suits, as a defendant or otherwise.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

References in Text

This chapter, referred to in subsecs. (a) and (c), 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 section 616aa–1, 620a–1, 620a–2, 620c–1, and 620d–1 of this title, amended section 616hh, 620, and 620a of this title, and enacted provisions set out as notes under section 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. (a), 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. The Boulder Canyon Project Adjustment Act, referred to in subsec. (a), is act July 19, 1940, ch. 643, 54 Stat. 774, which is classified generally to subchapter II (§ 618 et seq.) of chapter 12A of this title. For complete classification of this Act to the Code, see section 618o of this title and Tables. The Colorado River Storage Project Act, referred to in subsec. (a), is act Apr. 11, 1956, ch. 203, 70 Stat. 105, which is classified generally to chapter 12B (§ 620 et seq.) of this title. For complete classification of this Act to the Code, see

Short Title

note set out under section 620 of this title and Tables. Termination of Reporting RequirementsFor termination, effective May 15, 2000, of provisions in subsec. (b)(1) of this section relating to the requirement that the Secretary transmit a report to Congress every five years, see section 3003 of Pub. L. 104–66, as amended, set out as a note under section 1113 of Title 31, Money and Finance, and the 9th item on page 114 of House Document No. 103–7.

Reference

Citations & Metadata

Citation

43 U.S.C. § 1551

Title 43Public Lands

Last Updated

Apr 6, 2026

Release point: 119-73