§214.24. Coastal zone boundary

            A. The seaward boundary of the coastal zone of Louisiana shall be the seaward limit of the state of Louisiana as determined by law.

            B. The interstate boundaries of the coastal zone shall be the boundary separating Louisiana from Texas on the west and the boundary separating Louisiana from Mississippi on the east, as each is determined by law.

            C. The inland boundary of the coastal zone shall generally be a line beginning at a point on the Louisiana/Texas border approximately 1035 feet southerly of the centerline of Interstate Highway 10 (I-10) at the northern boundary of Section 9, T11S-R13W. From this Point of Beginning, the inland boundary of the coastal zone shall thence proceed easterly along the northern boundary of Sections 9, 10, 11, 12, T11S-R13W, Sections 7, 8, 9, 10, 11, 12, T11S-R12W, Sections 7, 8, 9, 10, 11, 12T11S-R11W, and Section 7, T11S-R10W a distance of approximately 89,076 feet to the intersection of the left descending bank of Bayou Choupique; thence southerly along the left descending bank of Bayou Choupique a distance of approximately 56,800 feet to the intersection of the north shore of the Gulf-Intracoastal Waterway; thence easterly along the north shore of the Gulf-Intracoastal Waterway a distance of approximately 29,225 feet to the intersection of the right descending bank of Black Bayou; thence northerly along the right descending bank of Black Bayou a distance of approximately 7,028 feet to the intersection of the right descending bank of Coulee Hippolyte; thence northerly along the right descending bank of Coulee Hippolyte approximately 12,100 feet to the extension of the eastern right-of-way of Nelson Road; thence northerly along the eastern right-of-way of Nelson Road approximately 4,968 feet to the southern right-of-way of W. Lincoln Road; thence easterly along the southern right-of-way of W. Lincoln Road approximately 11,928 feet to the western right-of-way of Louisiana Highway 385 (Gulf Highway); thence southerly along the western right-of-way of Louisiana Highway 385 (Gulf Highway) approximately 20,180 feet to the northern Cameron Parish boundary; thence easterly along the northern Cameron Parish boundary approximately 194,110 feet to the northeast corner of Cameron Parish; thence southerly along the boundary of Cameron/Vermilion Parishes approximately 43,122 feet to the north shore of the Gulf-Intracoastal Waterway; thence easterly along the north shore of the Gulf-Intracoastal Waterway approximately 109,994 feet to the eastern right-of-way of Louisiana Highway 82; thence northerly along the eastern right-of-way of Louisiana Highway 82 a distance of approximately 3,731 feet to its intersection with Louisiana Highway 35; thence easterly along the southern right-of-way of Louisiana Highway 82 a distance of approximately 40,638 feet to its intersection with Louisiana Highway 333; thence northerly along the eastern right-of-way of Louisiana Highway 82 a distance of approximately 16,480 feet to the southern right-of-way of Louisiana Highway 690; thence easterly along the southern right-of-way of Louisiana Highway 690 a distance of approximately 23,157 feet to the southern right-of-way of Louisiana Highway 330; thence continuing easterly along the southern right-of-way of Louisiana Highway 330 a distance of approximately 28,303 feet to a point where Louisiana Highway 330 takes a 90- degree turn to the north; thence northerly along the eastern right-of-way of Louisiana Highway 330 a distance of approximately 28,632 feet to a point approximately 188 feet north of the centerline of Wilferd Landry Street, in Delcambre; thence N 89 degrees 05 minutes 01 seconds W a distance of approximately 1,457 feet; thence N 00 degrees 23 minutes 30 seconds W a distance of approximately 276 feet; thence N 88 degrees 43 minutes 94 seconds W a distance of approximately 1,380 feet; thence N 00 degrees 26 minutes 05 seconds W a distance of approximately 2,661 feet to the intersection of the centerline of North Saunier Drive and the extension of the eastern right-of-way of Louisiana Highway 89; thence northerly along the eastern right-of-way of Louisiana Highway 89 a distance of approximately 539 feet; thence N 86 degrees 26 minutes 50 seconds E a distance of 1,475 feet; thence N 01 degrees 09 minutes 06 seconds E a distance of 654 feet; thence S 89 degrees 30 minutes 31 seconds E a distance of 337 feet to a point on the Vermilion/Iberia Parish boundary; thence northerly along the parish boundary a distance of approximately 19,351 to the southern right-of-way of Louisiana Highway 682 (Lake Peigneur Road); thence southeasterly along the southern right-of-way of Louisiana Highway 682 a distance of 10,230 feet to the northern right-of-way of Louisiana Highway 675 (Jefferson Island Road); thence southwesterly along the northern right-of-way of Louisiana Highway 675 a distance of approximately 15,576 feet to the southern right-of-way of Louisiana Highway 14; thence easterly along the southern right-of-way of Louisiana Highway 14 a distance of approximately 42,067 feet to the southern right-of-way of US Highway 90; thence easterly along the southern right-of-way of US Highway 90 a distance of approximately 50,265 feet to the southern right-of-way of Louisiana Highway 85 (Patoutville Road); thence northeasterly along the southern right-of-way of Louisiana Highway 85 a distance of approximately 5,826 feet to the southern right-of-way of Louisiana Highway 674 (East Admiral Doyle Drive); thence southeasterly along the southern right-of-way of Louisiana Highway 674 a distance of approximately 9,997 feet to the southern right-of-way of Louisiana Highway 85 (Hubertville Road); thence northeasterly along the southern right-of-way of Louisiana Highway 85 a distance of approximately 6,160 feet to the northern right-of-way of Glover Street; thence northwesterly along the northern right-of-way of Glover Street a distance of approximately 2,140 feet; thence N 42 degrees 30 minutes 50 seconds E along the eastern right-of-way of Doll Street a distance of approximately 1,794 feet to the right descending bank of Bayou Teche; thence southerly along the right descending bank of Bayou Teche a distance of approximately 12,314 feet to the St. Mary Parish boundary; thence northerly along the Iberia/St. Mary Parish boundary a distance of approximately 40,881 feet to the eastern right-of-way of Iberia Parish Road 305 (West Atchafalaya Basin Spillway Road); thence northerly along the eastern right-of-way of Iberia Parish Road 305 a distance of approximately 32,791 feet to the Iberia Parish boundary; thence easterly along the Iberia/St. Martin and Iberia/Iberville Parish boundaries a distance of approximately 134,940 feet to the Assumption Parish boundary; thence continuing easterly along the Assumption/Iberville and Assumption/Ascension Parish boundaries a distance of approximately 94,422 feet to the St. James Parish boundary; thence continuing easterly along the St. James/Ascension Parish boundary a distance of approximately 46,802 feet to the eastern right-of-way of the Entergy tower power line near the western boundary of Section 31, T10S – R4E; thence northerly along the east right-of-way line of the Entergy tower power line a distance of 14,248 feet to the northern right-of-way of Interstate Highway 10 (I-10) located in Section 19, T10S-R4E; thence southeasterly along the northern right-of-way of I-10 a distance of 27,411 feet to the east section line of Section 26, T10S-R4E; thence northerly along the east section lines of Sections 26, 23, 14, and 11, T10S-R4E a distance of 15,704 feet to the northern drainage servitude line of New River Canal; thence westerly along the northern drainage servitude line of New River Canal a distance of 6,121 feet to the eastern drainage servitude line of Sevario Canal (Marvin Braud Pumping Station) located in Section 10, T10S-R4E; thence northerly along the east drainage servitude line of Sevario Canal a distance of 12,599 feet to the toe of the levee on the east bank of an unnamed tributary located in the northeast quarter of Section 34, T9S-R4E; thence proceed in a northeasterly and northwesterly direction along the floodside toe of the levee on the east bank of an unnamed tributary a distance of 1,221 feet to the north section line of Section 34, T9S-R4E and also at the toe of an existing levee heading east; thence easterly along the north section line and also the floodside toe of the levee a distance of 1,530 feet to a turn in the levee northward; thence northeasterly along the floodside toe of the levee a distance of 1,440 feet to a turn in the levee westward; thence westerly along the floodside toe of the levee a distance of 2,354 feet to the west bank of the unnamed tributary in Section 27, T9S-R4E; thence northerly along the west bank of the unnamed tributary a distance of 2,716 feet to the extension of the floodside toe of an existing levee heading southeasterly from the unnamed tributary; thence southeasterly, then northeasterly, then northwesterly along the floodside toe of the levee a distance of 5,794 feet to the northern right-of-way of Laurel Ridge Levee and the south right-of-way of Louisiana Highway 22 located in the southeast quarter of Section 22, T9S-R4E; thence northwesterly along the north right-of-way line of Laurel Ridge Levee a distance of 4,085 feet to a turn in the levee westward and located in the southwest quarter of Section 15, T8S-R4E; thence westerly along the north right-of-way line of Laurel Ridge Levee a distance of 10,313 feet to a point being 1,100 feet west of Bayou Vicknair in the southwest quarter of Section 17, T8S-R4E; thence N 10 degrees 02 minutes 34 seconds E a distance of 4,966 feet along the eastern side of a ridge following the elevation 5 feet contour line to a point located in the northern half of Section 17, T8S-R4E; thence proceed N 02 degrees 55 minutes 03 seconds W a distance of 4,641 feet to a point located on the top of an elevation 5 feet knoll located south of Lake Martin in the northern half of Section 8, T8S-R4E; thence N 47 degrees 59 minutes 42 seconds W a distance of 2,335 feet to a point located in the northern half of Section 8, T8S-R4E; thence N 32 degrees 31 minutes 50 seconds W a distance of 1,236 feet to a point located on the west section line of Section 5, T8S-R4E; thence proceed northerly along the west section line of said Section 5 and the west section line of Section 32, T8S-R4E a distance of 5,517 feet to a point located in the southeast quarter of Section 31, T8S-R4E; thence N 71 degrees 41 minutes 16 seconds W a distance of 1,926 feet to a point on the west bank of an unnamed tributary of Lake Villars in Section 31, T8S-R4E; thence an approximate direction of N 16 degrees 30 minutes 04 seconds W proceed along the west bank of an unnamed tributary of Lake Villars a distance of 2,094 feet to a point in Section 31, T8S-R4E; thence an approximate direction of N 46 degrees 41 minutes 16 seconds W along the west bank of an unnamed tributary of Lake Villars a distance of 899 feet to a point in Section 31, T8S-R4E; thence an approximate direction of N 08 degrees 16 minutes 33 seconds E along the west bank of an unnamed tributary of Lake Villars a distance of 1,134 feet to a point in Section 30, T8S-R4E; thence an approximate direction of N 34 degrees 16 minutes 41 seconds W along the west bank of an unnamed tributary of Lake Villars a distance of 1,348 feet to the southern right-of-way of Summerfield Road located in the southern half of Section 30, T8S-R4E; thence westerly along the southern right-of-way of Summerfield Road a distance of 2,010 feet to the centerline of Louisiana Highway 431 located in the southern half of Section 25, T8S-R4E; thence S 87 degrees 57 minutes 12 seconds W a distance of 4,226 feet to a ridge top with elevation 15 feet located in the southern half of Section 25, Township 8 South, Range 3 East; thence N 01 degrees 10 minutes 10 seconds W a distance of 6,333 feet to the edge of the swamp and the elevation 5 feet contour line near the southeast comer of the Shiloh Church Cemetery located south of Louisiana Highway 42 located in the northern half of Section 3, T8S-R3E; thence N 77 degrees 24 minutes 19 seconds E along the elevation 5 feet contour line a distance of 1,498 feet to a point located on the east section line of Section 3, T8S-R3E; thence S 51 degrees 07 minutes 20 seconds E a distance of 3,562 feet to a point on the east section line of Section 24, T8S-R3E and the extension of the southern right-of-way of Louisiana Highway 42/Amite River crossing being on an elevation 5 feet plateau located in the southern half of Section 24, Township 8 South, Range 3 East, Southeast District, East of Mississippi River; thence easterly along the extension of the south right-of-way of Louisiana Highway 42/Amite River crossing a distance of 663 feet to the centerline of the Amite River at the Livingston Parish boundary; thence continuing easterly along the southern right-of-way of Louisiana Highway 42 a distance of approximately 926 feet to the southern right-of-way of combined Louisiana Highways 16/42; thence easterly along the southern right-of-way of combined Louisiana Highways 16/42 a distance of approximately 16,619 feet to the southeastern right-of-way of Louisiana Highway 42 where it diverges from combined Louisiana Highways 16/42; thence northeasterly (becoming easterly) along the southeastern (becoming southern) right-of-way of Louisiana Highway 42 a distance of approximately 106,632 feet to the southeasterly right-of-way of Louisiana Highway 22; thence northeasterly along the southeasterly (becoming southern) right-of-way of Louisiana Highway 22 a distance of approximately 88,428 feet to the Tangipahoa/St. Tammany Parish boundary; thence northerly along the Tangipahoa/St. Tammany Parish boundary a distance of approximately 15,829 feet to the southern right-of-way of Interstate Highway 12 (I-12); thence easterly along the southern right-of-way of I-12 a distance of approximately 172,968 feet to the southern right-of-way of Interstate Highway 10 (I-10); thence continued easterly along the southern right-of-way of I-10 a distance of approximately 32,514 feet to the termination point at the intersection of southern right-of-way of I-10 with the Louisiana/Mississippi state border.

            D. The secretary shall adopt a fully delineated inland boundary in accordance with the provisions of Subsection C of this Section, which boundary shall not depart appreciably from the boundary delineated therein. The secretary shall be authorized to amend the boundary as may be appropriate to follow the corporate limits of any municipality divided by the boundary. The boundary, as adopted, shall be clearly marked on large scale maps or charts, official copies of which shall be available for public inspection in the office of coastal management of the Department of Energy and Natural Resources and each local government in the coastal zone. The boundary shall also be available in an electronic format map available for viewing or download from the office of coastal management website.

            Acts 1978, No. 361, §1, eff. Jan. 1, 1979. Amended by Acts 1979, No. 665, §1, eff. July 18, 1979; Acts 1980, No. 396, §1; Acts 1983, No. 705, §4, eff. Sept. 1, 1983; Acts 2010, No. 956, §1; Acts 2012, No. 588, §1, eff. June 7, 2012; Acts 2023, No. 150, §20, eff. Jan. 10, 2024.