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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 33
Chapter II
Part 329 - PART 329—DEFINITION OF NAVIGABLE WATERS OF THE UNITED STATES
§ 329.1 - Purpose.
§ 329.2 - Applicability.
§ 329.3 - General policies.
§ 329.4 - General definition.
§ 329.5 - General scope of determination.
§ 329.6 - Interstate or foreign commerce.
§ 329.7 - Intrastate or interstate nature of waterway.
§ 329.8 - Improved or natural conditions of the waterbody.
§ 329.9 - Time at which commerce exists or determination is made.
§ 329.10 - Existence of obstructions.
§ 329.11 - Geographic and jurisdictional limits of rivers and lakes.
§ 329.12 - Geographic and jurisdictional limits of oceanic and tidal waters.
§ 329.13 - Geographic limits: Shifting boundaries.
§ 329.14 - Determination of navigability.
§ 329.15 - Inquiries regarding determinations.
§ 329.16 - Use and maintenance of lists of determinations.
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