§60-1001. Adoption and description of official system of

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coordinates.

A. The systems of plane coordinates which have been established by the National Oceanic and Atmospheric Administration/National Geodetic Survey, formerly the National Ocean Service/National Geodetic Survey, formerly the United States Coast and Geodetic Survey, or its successors for defining and stating the geographic positions or locations of points on the surface of the earth within the State of Oklahoma are hereafter to be known and designated as the Oklahoma Coordinate System of 1927, the Oklahoma Coordinate System of 1983, and the Oklahoma Plane Coordinate System (OKPCS).

For the purpose of the use of the Oklahoma Coordinate System of 1927 and the Oklahoma Coordinate System of 1983, the state is divided into a North Zone and a South Zone.

B. 1. The area now included in the following counties shall constitute the North Zone: Adair, Alfalfa, Beaver, Blaine, Canadian, Cherokee, Cimarron, Craig, Creek, Custer, Delaware, Dewey, Ellis, Garfield, Grant, Harper, Kay, Kingfisher, Lincoln, Logan, Major, Mayes, Muskogee, Noble, Nowata, Okfuskee, Oklahoma, Okmulgee, Osage, Ottawa, Pawnee, Payne, Roger Mills, Rogers, Sequoyah, Texas, Tulsa, Wagoner, Washington, Woods and Woodward.

2. The area now included in the following counties shall constitute the South Zone: Atoka, Beckham, Bryan, Caddo, Carter, Choctaw, Cleveland, Coal, Comanche, Cotton, Garvin, Grady, Greer, Harmon, Haskell, Hughes, Jackson, Jefferson, Johnston, Kiowa, Latimer, Leflore, Love, McClain, McCurtain, McIntosh, Marshall, Murray, Pittsburg, Pontotoc, Pottawatomie, Pushmataha, Seminole, Stephens, Tillman and Washita.

3. For the purpose of the use of the Oklahoma Plane Coordinate System (OKPCS), the most recent system of plane coordinate and zone designation that has been established by the National Geodetic Survey (NGS), or a successor, that is based on the North American Terrestrial Reference Frame of 2022 (NATRF2022), or a successor, and the National Spatial Reference System (NSRS), or a successor, and known as the State Plane Coordinate System (SPCS), or a successor, for defining and stating the geographic positions or location of points within the state shall be known as the "Oklahoma Plane Coordinate System" (OKPCS).

C. 1. As established for use in the North Zone, the Oklahoma Coordinate System of 1927 or the Oklahoma Coordinate System of 1983 shall be named; and in any land description in which it is used, it shall be designated the "Oklahoma Coordinate System of 1927 North Zone" or the "Oklahoma Coordinate System of 1983 North Zone".

2. As established for use in the South Zone, the Oklahoma Coordinate System of 1927 or the Oklahoma Coordinate System of 1983 shall be named; and in any land description in which it is used, it shall be designated the "Oklahoma Coordinate System of 1927 South Zone" or the "Oklahoma Coordinate System of 1983 South Zone".

3. As established for use, the Oklahoma Plane Coordinate System (OKPCS) shall be named, and in any land description in which it is used, it shall be designated the "Oklahoma Plane Coordinate System" (OKPCS). Added by Laws 1990, c. 138, § 1, eff. Nov. 1, 1990. Amended by Laws 2024, c. 209, § 1, eff. Nov. 1, 2024.