Missouri State Plane Coordinate System

PURPOSE: This rule prescribes the requirements for referencing corners of the United States Public Land Survey to the Missouri State Plane Coordinate System. (1) When the corner that is removed, altered, restored, or reestablished is required to be referenced to the Missouri State Plane Coordinate System, the corner coordinates shall be shown on the Certified Land Corner Document form. (A) Values for the Missouri State Plane Coordinate System may be expressed in feet and decimals of a foot or meters and decimals of a meter. When values are expressed in feet, the international foot shall be used as the standard foot for the Missouri State Plane Coordinate System. One (1) international foot equals 0.3048 meters exactly or one (1) inch equals 2.54 centimeters exactly as defined by the National Institute of Science and Technology (NIST). (2) Coordinates referenced to Missouri State Plane Coordinate System and shown on Certified Land Corner Document forms shall comply with the following requirements: (A) The position of the corner shall be based upon a geodetic control station having a horizontal accuracy of second order (as defined in 20 CSR 2030-18.020) or higher order; (B) The survey connecting the corner to the geodetic control station shall meet the accuracy standards set forth in the Missouri Standards for Property Boundary Surveys; and (C) The following information shall be included on the Certified Land Corner Document form: 1. The geodetic control station(s) that were used to determine the position of the corner; 2. The coordinates of the geodetic control station(s) used and the appropriate Zone designation; 3. The appropriate adjustment date or realization designation and Datum/Terrestrial Reference Frame, along with the epoch date when applicable. Epoch date refers to Reference Epoch Coordinates (RECs). Coordinates estimated by National Geodetic Survey (NGS) for one (1) of the official reference epochs NGS will define (every five (5) or ten (10) years, as currently planned). As these coordinates are computed by NGS they are considered part of the National Spatial Reference System (NSRS). 4. A brief statement of the method used to obtain the position; and 5. The grid factor used, if applicable. (3) Coordinates referenced to the Missouri State Plane Coordinate System may be used to reference corners in lieu of monuments. AUTHORITY: section 60.401, RSMo Supp. 2024, and sections 327.041 and 327.272, RSMo 2016.* This rule originally filed as 4 CSR 30-17.070. Original rule filed May 3, 1994, effective Dec. 30, 1994. Moved to 20 CSR 2030-17.070, effective Aug. 28, 2006. Amended: Filed June 14, 2007, effective Dec. 30, 2007. Non-substantive change filed Oct. 21, 2015, published Dec. 31, 2015. Amended: Filed Nov. 18, 2016, effective June 30, 2017. Amended: Filed Jan. 8, 2025, effective Aug. 30, 2025. *Original authority: 60.401, RSMo 1984, amended 2023; 327.041, RSMo 1969, amended 1981, 1986, 1989, 1993, 1995, 1999, 2001, 2010, 2014; and 327.272, RSMo 1969, amended 1981, 1999, 2010, 2014, 2015, 2016.