CFR›Title 50›Chapter II›Part 221 ContainsSubparts A–CCorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 PART 221—CONDITIONS AND PRESCRIPTIONS IN FERC HYDROPOWER LICENSES Subparts A Subpart A—General Provisions Sections 221.1–221.4 B Subpart B—Hearing Process Subject groups Document Filing and Service–Representatives C Subpart C—Alternatives Process Sections 221.70–221.75 Authority16 U.S.C. 797(e), 811, 823d.Source80 FR 17207, Mar. 31, 2015, unless otherwise noted. Previous 219 Part 219—Regulations Governing the Taking and Importing of Marine Mammals Next 222 Part 222—General Endangered and Threatened Marine Species