The Secretary of the Interior shall, on behalf of each Federal agency concerned, make written certification that each agency has complied with the provisions of this chapter during each fiscal year beginning after September 30, 1985. Such certification shall be submitted on an annual basis to the United States House of Representatives and the United States Senate on or before January 15 of each fiscal year.

Nothing contained in this chapter shall be construed to alter, amend, repeal, modify, interpret, 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 944, 59 Stat. 1219), the Flood Control Act of 1944 (58 Stat. 887), the decree entered by the Supreme Court of the United States in Arizona v. California, and others (376 U.S. 340), 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. 618a) [43 U.S.C. 618 et seq.], the Colorado River Storage Project Act (70 Stat. 105; 43 U.S.C. 620) [43 U.S.C. 620 et seq.], the Colorado River Basin Project Act (82 Stat. 885; 43 U.S.C. 1501) [43 U.S.C. 1501 et seq.]. Furthermore, nothing contained in this chapter shall be construed as indicating an intent on the part of the Congress to change the existing relationship of other Federal laws to the law of a State, or a political subdivision of a State, or to relieve any person of any obligation imposed by any law of any State, tribe, or political subdivision of a State. No provision of this chapter shall be construed to invalidate any provision of State, tribal, or local law unless there is a direct conflict between such provision and the law of the State, or political subdivision of the State or tribe, so that the two cannot be reconciled or consistently stand together. Inconsistencies shall be reviewed by the task force, and the task force shall make recommendations concerning such local laws. This chapter shall in no way be interpreted to interfere with a State’s or tribe’s right to protect, rehabilitate, preserve, and restore lands within its established boundary.

If any provision of this chapter or the application thereof to any person or circumstances is held invalid, the remainder of the chapter and the application of such provision to other persons not similarly situated or to other circumstances shall not be affected thereby.

Within one year after October 8, 1986, the Secretary shall prepare and submit to the Committees a report regarding the Colorado River Floodway, the task force’s report, and the Secretary’s recommendations with respect to the objectives outlined in section 1600b(b) of this title. In making his report, the Secretary shall analyze the effects of this chapter on the economic development of the Indian tribes whose lands are located within the Floodway.

There is authorized to be appropriated to the Department of the Interior $600,000, through the end of fiscal year 1990, in addition to any other funds now available to the Department to discharge its duties to implement sections 1600b to 1600k of this title and section 4029 of title 42: Provided, That by mutual agreement, such funds shall be made available to the Federal Emergency Management Agency to discharge its duties under section 4029 of title 42: Provided further, That the provisions of sections 1600d and 1600e of this title shall not be affected by this section: And Provided further, in addition, Indian tribes may be eligible under Public Law 93–638 [25 U.S.C. 5301 et seq.] to contract for studies of Indian lands required under the provisions of this chapter.