Louisiana Administrative Code
Title 43 - NATURAL RESOURCES
Part XXVII - State Lands
Subpart 1 - Land Information Mapping and Map Records System
Chapter 15 - Geographic Base Map
Section XXVII-1515 - Grid System
Current through Register Vol. 50, No. 9, September 20, 2024
A. All horizontal ground positions determined by stereo photogrammetric methods will be based on the North American Datum of 1983 (NAD 83), Louisiana State Plane Coordinate System (North or South Zone, as applicable) with X and Y values expressed in feet. All vertical ground positions will be based on the National Geodetic Vertical Datum of 1929 (NGVD 29), latest adjustment, and subject to pending final development and publication of NAVD 88 as set forth in Chapter 5, with all Z (vertical coordinate) values expressed in feet.
B. The U.S. Survey Foot (1 meter = 3.2808333333 feet) shall be used in all conversions of Louisiana State Plane Coordinates from meters to feet or feet to meters. The datum and coordinate system used will be noted on any map sheets bearing coordinates.
AUTHORITY NOTE: Promulgated in accordance with R.S. 50:171.
