CFR›Title 18›Chapter III›Part 401›Subpart B ContainsSections 401.21–401.23CorpusDaily eCFRDisplayed edition2026-08-07Last updated2026-08-07 Subpart B—Water Resources Program Sections 401.21 § 401.21 Scope. 401.22 § 401.22 Concept of the program. 401.23 § 401.23 Procedure. Previous A Subpart A—Comprehensive Plan Next I Subpart I—General Provisions