Plane Coordinates System

Wyo. Stat. Ann. tit. 34, ch. 25
in effect

Wyo. Stat. Ann. § 34-25-101 System of plane coordinates adopted.

(a) The most recent version of the state plane coordinate system for the state of Wyoming that has been established by NGS, based on the NSRS for defining and stating the positions or locations of points on the surface of the earth within the state of Wyoming shall be known as the "Wyoming Plane Coordinate System." The Wyoming Plane Coordinate System shall be named, and in any land description in which it is used it shall be designated, the "Wyoming Plane Coordinate System" and the zone used shall be specified. (b) Repealed by Laws 2024, ch. 3, § 3.

Wyo. Stat. Ann. § 34-25-102 Designation of coordinates.

The plane coordinates of a point on the earth's surface, to be used in expressing the position or location of such point in the appropriate zone of this system, shall consist of two (2) distances, expressed in feet and decimals of a foot, or meters and decimals of a meter. One (1) of these distances, to be known as the "east x-coordinate" shall give the distance east of the Y axis; the other, to be known as the "north y-coordinate" shall give the distance north of the X axis. The Y axis of any zone shall be parallel with the central meridian of that zone. The X axis of any zone shall be at right angles to the central meridian of that zone. One (1) foot shall equal three thousand forty-eight ten-thousandths (0.3048) of one (1) meter and shall be used as the standard unit of measurement for the Wyoming Plane Coordinate System. The official geodetic datums to which geodetic coordinates are referenced within the state of Wyoming including latitude, longitude, ellipsoid height, orthometric height or dynamic height shall be defined by the NSRS. Height is the coordinate value of the vertical elements of the NSRS expressed in feet and identified as ellipsoid height or orthometric height.

Wyo. Stat. Ann. § 34-25-103 Land extending into other zones.

When any tract of land to be defined by a single description extends from one (1) zone into other zones, the positions of all the points on its boundaries shall be referred to as only one (1) of the zones, the zone which is used shall be specifically named in the description and the metadata of the observations shall be included in the description.

Wyo. Stat. Ann. § 34-25-105 Recording coordinates.

Coordinates based on the Wyoming Plane Coordinate System, purporting to define the position of a point on a land boundary, may be presented to be recorded in any public land records or deed records in the office of a county clerk. The method and source for establishing coordinates shall be described in the land or deed record. In all instances where reference has been made to coordinates in land surveys or deeds, the combined factors shall be stated for the survey lines used in computing ground distances and areas and the metadata of observations shall be included in the record.

Wyo. Stat. Ann. § 34-25-106 Reference to system on maps.

The use of the term "Wyoming Plane Coordinate System" on any map, report of survey or other document, shall be limited to plane coordinates based on the Wyoming Plane Coordinate System as defined in this chapter.

Wyo. Stat. Ann. § 34-25-107 Description in other surveys; conflicts.

Wherever coordinates based on the Wyoming Plane Coordinate System are used to describe any tract of land which in the same document is also described by reference to any subdivision, line or corner of the United States public land surveys, the description by plane coordinates shall be construed as supplemental to the basic description of the subdivision, line or corner contained in the official plats and field notes filed of record, and in the event of any conflict, the description by reference to the subdivision, line or corner of the United States public land surveys shall prevail over the description by plane coordinates. Every recorded map, survey or conveyance, or other instrument affecting title to real property which delineates, describes or refers to such property or any part thereof by reference to coordinates based upon the Wyoming Plane Coordinate System shall also describe the property by reference and tie to a controlling corner monument of the United States public land surveys, if applicable.

Wyo. Stat. Ann. § 34-25-108 Application.

(a) Nothing contained in this chapter shall require any purchaser or mortgagee to rely on a description, any part of which depends exclusively upon the Wyoming Plane Coordinate System. (b) The provisions of this chapter shall not be construed to: (i) Prohibit the appropriate use of other datums, other geodetic reference networks or systems or other plane coordinate systems; (ii) Require the revision of any survey, deed, record or other document prepared or recorded before July 1, 2024 that uses the Wyoming Coordinate System NAD 1983 or any other coordinate system previously authorized under this chapter.

Wyo. Stat. Ann. § 34-25-109 Definitions.

(a) As used in this chapter: (i) "Metadata" means data that describes other data including utilized geodetic reference system data, applicable epoch, statement or relative accuracy data and date of observation data; (ii) "NGS" means the national ocean service's national geodetic survey of the national oceanic and atmospheric administration, United States department of commerce or its successor; (iii) "NSRS" means the national spatial reference system or its successor; (iv) "Wyoming Plane Coordinate System" means the system of plane coordinates under this chapter that is identical to the state plane coordinate system as defined for the state of Wyoming by NGS.
Source: Public.Resource.Org WY StatutesURL: https://unicourt.github.io/cic-code-wy/transforms/wy/ocwy/r78/gov.wy.code.title.34.htmlFetched: 6/28/2026

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