U.S. Code of Federal Regulations

Regulations most recently checked for updates: Sep 16, 2025

All TitlesTitle 18Chapter IIIPart 415 - PART 415—BASIN REGULATIONS—FLOOD PLAIN REGULATIONS

GENERALLY
§ 415.1 - Short title.
§ 415.2 - Definitions.
§ 415.3 - Purpose and findings.

TYPES OF PROJECTS AND JURISDICTION
§ 415.20 - Class I projects.
§ 415.21 - Class II projects.

STANDARDS
§ 415.30 - Regulations generally.
§ 415.31 - Prohibited uses.
§ 415.32 - Permitted uses generally.
§ 415.33 - Uses by special permit.

ADMINISTRATION
§ 415.40 - Administrative agency.
§ 415.41 - Special permits.
§ 415.42 - Technical standards.
§ 415.43 - Mapped and unmapped delineations.

ENFORCEMENT
§ 415.50 - General conditions.
§ 415.51 - Prior non-conforming structures.
§ 415.52 - Violations.
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