Nothing contained in this chapter shall be construed to alter, amend, repeal, construe, interpret, modify, or be in conflict with the provisions of 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.], the Colorado River Compact, the Upper Colorado River Basin Compact, the Rio Grande Compact of 1938, or the treaty with the United Mexican States (Treaty Series 994).