CFR›Title 40›Chapter VIII›Part 1800›40 CFR Part 1800 Subpart A Citation40 CFR Part 1800 Subpart AContainsSection § 1800.1CorpusDaily eCFRDisplayed edition2026-11-04Last updated2026-11-04 Subpart A—Definitions Sections § 1800.1 § 1800.1 Definitions. Authority33 U.S.C. 1321(t).Source80 FR 1586, Jan. 13, 2015, unless otherwise noted. Next B Subpart B—Minimum Allocation Available for Planning Purposes