Subjgrp 91. North Carolina
- § 117.820 - Atlantic Intracoastal Waterway (Alternate Route), Great Dismal Swamp Canal.
- § 117.821 - Atlantic Intracoastal Waterway, Albermarle Sound to Sunset Beach.
- § 117.822 - Cape Fear River.
- § 117.823 - Gallants Channel.
- § 117.824 - Neuse River.
- § 117.825 - Newport River.
- § 117.829 - Northeast Cape Fear River.
- § 117.831 - Pamlico and Tar Rivers.
- § 117.833 - Pasquotank River.
- § 117.835 - Perquimans River.
- § 117.837 - Roanoke River.
- § 117.841 - Smith Creek.
- § 117.843 - Trent River.