You are using an unsupported browser. This web site is designed for the current versions of Microsoft Edge, Google Chrome, Mozilla Firefox, or Safari.
The Office of the Federal Register publishes documents on behalf of Federal agencies but does not have any authority over their programs. We recommend you directly contact the agency associated with the content in question.
If you have comments or suggestions on how to improve the www.ecfr.gov website or have questions about using www.ecfr.gov, please choose the 'Website Feedback' button below.
If you would like to comment on the current content, please use the 'Content Feedback' button below for instructions on contacting the issuing agency
Enhanced content is provided to the user to provide additional context.
This content is from the eCFR and is authoritative but unofficial.
Navigate by entering citations or phrases (eg: 1 CFR 1.1 49 CFR 172.101 Organization and Purpose 1/1.1 Regulation Y FAR).
Choosing an item from citations and headings will bring you directly to the content. Choosing an item from full text search results will bring you to those results. Pressing enter in the search box will also bring you to search results.
Background and more details are available in the Search & Navigation guide.
CGD 77-118a, 42 FR 35784, July 11, 1977, unless otherwise noted. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981.
This content is from the eCFR and may include recent changes applied to the CFR. The official, published CFR, is updated annually and available below under "Published Edition". You can learn more about the process here.
Subscribe to: 33 CFR Part 80 - USCG Heartland District
View the most recent official publication:
These links go to the official, published CFR, which is updated annually. As a result, it may not include the most recent changes applied to the CFR. Learn more.
Information and documentation can be found in our developer resources.
The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.
Learn more about the eCFR, its status, and the editorial process.
Nomenclature changes to part 80 appear by USCG-2025-0186, 90 FR 12238, Mar. 17, 2025, and by USCG-2025-0716, 90 FR 47585-47586, Oct. 2, 2025.
(a) A south-north line drawn from the Econfina River Light to the opposite shore.
(b) A line drawn from Gamble Point Light to the southernmost extremity of Cabell Point.
(c) A line drawn from St. Mark's Range Rear Light to St. Mark's Channel Light 11; thence to the southernmost extremity of Live Oak Point; thence in a straight line through Shell Point Light to the southernmost extremity of Ochlockonee Point; thence to Bald Point along longitude 84°20.5′ W.
(d) A line drawn from the south shore of Southwest Cape at longitude 84°22.7′ W., to Dog Island Reef East Light 1; thence a straight line to the easternmost extremity of Dog Island.
(e) A line drawn from the westernmost extremity of Dog Island to the easternmost extremity of St. George Island.
(f) A line drawn across the seaward extremity of the St. George Island Channel Jetties.
(g) A line drawn from the northwesternmost extremity of Sand Island to West Pass Light 7.
(h) A line drawn from the westernmost extremity of St. Vincent Island to the southeast, highwater shoreline of Indian Peninsula at Longitude 85°13.5′ W.
[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986; USCG-2008-0179, 73 FR 35002, June 19, 2008; USCG-2013-0397, 78 FR 39172, July 1, 2013]
(a) A line drawn from St. Joseph Bay Entrance Range A Rear Light through St. Joseph Bay Entrance Range B Front Light to St. Joseph Point.
(b) A line drawn across the mouth of Salt Creek as an extension of the general trend of the shoreline to continue across the inlet to St. Andrews sound in the middle of Crooked Island.
(c) A line drawn between the seaward end of the St. Andrews Bay Entrance Jetties.
(d) A line drawn between the seaward end of the Choctawatchee Bay Entrance Jetties.
(e) An east-west line drawn from Fort McRee Leading Light across the Pensacola Bay Entrance along latitude 30°19.5′ N.
(f) A line drawn between the seaward end of the Perdido Pass Jetties.
[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986; USCG-2018-0874, 84 FR 30878, June 28, 2019]
(a) A line drawn across the inlets to Little Lagoon as an extension of the general trend of the shoreline.
(b) A line drawn from 30°14′41.4″ N., 088°01′26.5″ W. (Mobile Point Light) to 30°15′13.3″ N., 088°03′22.6″ W. (Dauphin Island Channel Light 1) to the eastern corner of Fort Gaines at Pelican Point.
(c) A line drawn from the western-most extremity of Dauphin Island to the easternmost extremity of Petit Bois Island.
(d) A line drawn from Horn Island Pass Entrance Range Front Light on Petit Bois Island to the easternmost extremity of Horn Island.
(e) An east-west line (latitude 30°14.7′ N.) drawn between the westernmost extremity of Horn Island to the easternmost extremity of Ship Island.
(f) A curved line drawn following the general trend of the seaward, highwater shoreline of Ship Island.
(g) A line drawn from the Ship Island Light to Chandeleur Light; thence in a curved line following the general trend of the seaward, highwater shorelines of the Chandeleur Islands to the island at latitude 29°44.1′ N., longitude 88°53.0′ W.; thence to latitude 29°26.5′ N., longitude 88°55.6′ W.
[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986; CGD 89-068, 55 FR 31831, Aug. 6, 1990; 55 FR 33577, Aug. 14, 1990; USCG-2014-0410, 79 FR 38431, July 7, 2014]
(a) A line drawn from latitude 29°26.5′ N., longitude 88°55.6′ W. to latitude 29°10.6′ N., longitude 88°59.8′ W.; thence to latitude 29°03.5′ N., longitude 89°03.7′ W.; thence to latitude 28°58.8′ N., longitude 89°04.3′ W.
(b) A line drawn from latitude 28°58.8′ N., longitude 89°04.3′ W.; to latitude 28°57.3′ N., longitude 89°05.3′ W.; thence to latitude 28°56.95′ N., longitude 89°05.6′ W.; thence to latitude 29°00.4′ N., longitude 89°09.8′ W.; thence following the general trend of the seaward highwater shoreline in a northwesterly direction to latitude 29°03.4′ N., longitude 89°13.0′ W.; thence west to latitude 29°03.5′ N., longitude 89°15.5′ W.; thence following the general trend of the seaward highwater shoreline in a southwesterly direction to latitude 28°57.7′ N., longitude 89°22.3′ W.
(c) A line drawn from latitude 28°57.7′ N., longitude 89°22.3′ W.; to latitude 28°51.4′ N., longitude 89°24.5′ W.; thence to latitude 28°52.65′ N., longitude 89°27.1′ W.; thence to the seaward extremity of the Southwest Pass West Jetty located at latitude 28°54.5′ N., longitude 89°26.1′ W.
[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986; CGD 89-068, 55 FR 31831, Aug. 6, 1990; USCG-2012-0306, 77 FR 37312, June 21, 2012]
(a) A line drawn from the seaward extremity of the Southwest Pass West Jetty located at coordinate latitude 28°54.5′ N., longitude 89°26.1′ W.; thence following the general trend of the seaward, highwater jetty and shoreline in a north, northeasterly direction to Old Tower latitude 28°58.8′ N., longitude 89°23.3′ W.; thence to westernmost point near Pass du Bois; thence to coordinate latitude 29°05.2′ N., longitude 89°24.3′ W.; thence a curved line following the general trend of the highwater shoreline to Point Au Fer Island except as otherwise described in this section.
(b) A line drawn across the seaward extremity of the Empire Waterway (Bayou Fontanelle) entrance jetties.
(c) An east-west line drawn from the westernmost extremity of Grand Terre Islands in the direction of 194° true to the Grand Isle Fishing Jetty Light.
(d) A line drawn between the seaward extremity of the Belle Pass Jetties.
(e) A line drawn from the westernmost extremity of the Timbalier Island to the easternmost extremity of Isles Dernieres.
(f) A south-north line drawn from Caillou Bay Light 13 across Caillou Boca.
(g) A line drawn 107° true from Caillou Bay Boat Landing Light across the entrances to Grand Bayou du Large and Bayou Grand Caillou.
(h) A line drawn on an axis of 103° true through Taylors Bayou Entrance Light 2 across the entrances to Jack Stout Bayou, Taylors Bayou, Pelican Pass, and Bayou de West.
[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986; USCG-2013-0397, 78 FR 39172, July 1, 2013]
(a) A line drawn from Point Au Fer to Atchafalaya Channel Light 34; thence to Atchafalaya Channel Light 33; thence to latitude 29°25.0′ N., longitude 91°31.7′ W.; thence to Atchafalaya Bay Light 1 latitude 29°25.3′ N., longitude 91°35.8′ W.; thence to South Point.
(b) Lines following the general trend of the highwater shoreline drawn across the bayou and canal inlets from the Gulf of America between South Point and Calcasieu Pass except as otherwise described in this section.
(c) A line drawn on an axis of 140° true through Southwest Pass Vermillion Bay Light 4 across Southwest Pass.
(d) A line drawn across the seaward extremity of the Freshwater Bayou Canal Entrance Jetties.
(e) A line drawn from Mermentau Channel East Jetty Light 6 to Mermentau Channel West Jetty Light 7.
(f) A line drawn from the radio tower charted in approximate position latitude 29°45.7′ N., longitude 93°06.3′ W., 115° true across Mermentau Pass.
(g) A line drawn across the seaward extremity of the Calcasieu Pass Jetties.
[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986; USCG-2013-0397, 78 FR 39172, July 1, 2013]
(a) A line drawn from the Sabine Pass East Jetty Light to the seaward end of the Sabine Pass West Jetty.
(b) Lines drawn across the small boat passes through the Sabine Pass East and West Jetties.
(c) A line formed by the centerline of the highway bridge over Rollover Pass at Gilchrist.
(a) A line drawn from Galveston North Jetty Light 6A to Galveston South Jetty Light 5A.
(b) A line formed by the centerline of the highway bridge over San Luis Pass.
(c) Lines formed by the centerlines of the highway bridges over the inlets to Christmas Bay (Cedar Cut) and Drum Bay.
(d) A line drawn from the seaward extremity of the Freeport North Jetty to Freeport Entrance Light 6; thence Freeport Entrance Light 7; thence the seaward extremity of Freeport South Jetty.
[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986]
(a) Except as otherwise described in this section lines drawn continuing the general trend of the seaward, highwater shorelines across the inlets to Brazos River Diversion Channel, San Bernard River, Cedar Lakes, Brown Cedar Cut, Colorado River, Matagorda Bay, Cedar Bayou, Corpus Christi Bay, and Laguna Madre.
(b) A line drawn across the seaward extremity of Matagorda Ship Channel North Jetties.
(c) A line drawn from the seaward tangent of Matagorda Peninsula at Decros Point to Matagorda Light.
(d) A line drawn across the seaward extremity of the Aransas Pass Jetties.
(e) A line drawn across the seaward extremity of the Port Mansfield Entrance Jetties.
(f) A line drawn across the seaward extremity of the Brazos Santiago Pass Jetties.
[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986]