34-25-101. System of plane coordinates adopted; zones.
(a) The system of plane coordinates which has been established by the office of National Geodetic Survey, or its successors, for defining and stating the positions or locations of points on the surface of the earth within the state of Wyoming is adopted and hereafter shall be known and designated as the "Wyoming Coordinate System NAD 1983."
(b) For the purpose of the use of this system, the state is divided into an East Zone, an East Central Zone, a West Central Zone and a West Zone:
(i) As established for use in the East Zone, the Wyoming Coordinate System shall be named, and in any land description in which it is used it shall be designated, the "Wyoming Coordinate System NAD 1983, East Zone." The following counties will use Wyoming Coordinate System NAD 1983, East Zone: Laramie, Albany, Platte, Niobrara, Converse, Weston, Crook, Campbell, and Goshen;
(ii) As established for use in the East Central Zone, the Wyoming Coordinate System shall be named, and in any land description in which it is used it shall be designated, the "Wyoming Coordinate System NAD 1983, East Central Zone." The following counties will use Wyoming Coordinate System NAD 1983, East Central Zone: Carbon, Natrona, Johnson, Sheridan, Washakie, and Big Horn;
(iii) As established for use in the West Central Zone, the Wyoming Coordinate System shall be named, and in any land description in which it is used it shall be designated, the "Wyoming Coordinate System NAD 1983, West Central Zone." The following counties will use Wyoming Coordinate System NAD 1983, West Central Zone: Sweetwater, Fremont, Hot Springs, and Park;
(iv) As established for use in the West Zone, the Wyoming Coordinate System shall be named, and in any land description in which it is used it shall be designated, the "Wyoming Coordinate System NAD 1983, West Zone." The following counties will use Wyoming Coordinate System NAD 1983, West Zone: Uinta, Lincoln, Sublette, and Teton; also Yellowstone National Park.
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) linear distances, expressed in meters to the nearest millimeter. One (1) of these distances, to be known as the "x-coordinate" or "east-coordinate," shall give the position in an east-and-west direction; the other, to be known as the "y-coordinate" or "north-coordinate," shall give the position in a north-and-south direction. These coordinates shall depend upon and conform to the coordinates, on the Wyoming Coordinate System NAD 1983 of the National Geodetic Survey, or its successors, within the state of Wyoming, as those coordinates have been determined by the survey.
34-25-103. Land extending into a second zone.
When any tract of land to be defined by a single description extends from one into a second of the coordinate zones specified in W.S. 34-25-101, the positions of all the points on its boundaries may be referred to either of the two (2) zones, and the zone which is used shall be specifically named in the description.
34-25-104. Definition of zones; horizontal control stations.
(a) For purposes of more precisely defining the Wyoming Coordinate System NAD 1983 the following definition of the zones is adopted:
(i) The Wyoming Coordinate System NAD 1983, East Zone, is a transverse Mercator projection of the North American Datum of 1983, having a central meridian at 105 10' West of Greenwich on which meridian the scale is set at one part in 16,000 exactly. The origin of coordinates is at the intersection of the parallel at 40 30' North Latitude and the meridian at 105 10' West of Greenwich. This origin is given the coordinates: x=200,000 meters and y=0 meters;
(ii) The Wyoming Coordinate System NAD 1983, East Central Zone, is a transverse Mercator projection of the North American Datum of 1983, having a central meridian at 107 20' West of Greenwich on which meridian the scale is set at one part in 16,000 exactly. The origin of coordinates is at the intersection of the parallel at 40 30' North Latitude and the meridian at 107 20' West of Greenwich. This origin is given the coordinates: x=400,000 meters and y=100,000 meters;
(iii) The Wyoming Coordinate System NAD 1983, West Central Zone, is a transverse Mercator projection of the North American Datum of 1983, having a central meridian at 108 45' West of Greenwich on which meridian the scale is set at one part in 16,000 exactly. The origin of coordinates is at the intersection of the parallel at 40 30' North Latitude and the meridian at 108 45' West of Greenwich. This origin is given the coordinates: x=600,000 meters and y=0 meters;
(iv) The Wyoming Coordinate System NAD 1983, West Zone, is a transverse Mercator projection of the North American Datum of 1983, having a central meridian at 110 05' West of Greenwich on which meridian the scale is set at one part in 16,000 exactly. The origin of coordinates is at the intersection of the parallel at 40 30' North Latitude and the meridian at 110 05' West of Greenwich. This origin is given the coordinates: x=800,000 meters and y=100,000 meters.
(b) The position of any survey control point in the Wyoming Coordinate System NAD 1983 shall be as marked on the ground by horizontal control stations established in conformity with standards adopted by the Federal Geodetic Control Committee, or its successors, using first-order, second-order or higher-order accuracy survey work, whose geodetic positions have been rigorously adjusted on the North American Datum of 1983 and whose coordinates have been computed on the system herein defined. Any such station may be used for establishing a connection with the Wyoming Coordinate System NAD 1983.
34-25-105. Recording coordinates; use of satellite survey techniques.
No coordinates based on the Wyoming Coordinate System NAD 1983, purporting to define the position of a point on a land boundary, shall be presented to be recorded in any public land records or deed records in the office of a county clerk unless a record and report of survey of the actual survey to establish the plane coordinates of the point has been filed with the county surveyor, the county engineer or the county clerk and in conformity with the standards prescribed in W.S. 34-25-104. When acceptable satellite survey techniques are employed, a minimum of two (2) independent observing sessions shall be executed and shall agree to not less than one (1) part in one hundred thousand (100,000) of the distance between the points. The procedures and results shall conform with the standards in W.S. 34-25-104.
34-25-106. Reference to system on maps.
The use of the term "Wyoming Coordinate System NAD 1983" on any map, report of survey or other document, shall be limited to plane coordinates based on the Wyoming Coordinate System NAD 1983 as defined in this chapter.
34-25-107. Description in other surveys; conflicts.
Wherever coordinates based on the Wyoming Coordinate System NAD 1983 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 such 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 Coordinate System NAD 1983 shall also describe the property by reference and tie to a controlling corner monument of the United States public land surveys, if applicable.
34-25-108. Application.
Nothing contained in this chapter shall require any purchaser or mortgagee to rely on a description, any part of which
I remember some of those numbers, 1609.34, 804.67, 18.28, 10.06, they tend to stick especially 804.67, I used that thing so many times.
Since Wyoming was ambiguous about US vs International feet. This was published in the federal register.
Yes, they publish values in US Feet, however, it's not statutory. So,,,,,,,,,, here we are today.
No big deal for me, these projects are hyper controlled anyway, we will be locating all the control today and figure out how "good" it is internally. I suspect it will all be less than .02' using RTK.
Thanks for the info Lurker!!!
@mightymoe yeah I think i got ptsd from running the gun trying line a crew chief in meters until i just said the heck with it told him left right in feet and half pole and a hair smidgen. And when i was on the other end and was told cut .6 trying to guess about how much that was. I did get use to meters in usmc. But i had surveyed so long in feet I always thought in that way. Even doing orbital comps. I still had to visualize in feet and tenths and hundreths thousandth of a foot. I mean i am just stuck in my ways i reckon.
Not much of a northing shift a few feet but easting were around 28' here. 13,000,000 for a easting makes a huge difference when there's a few more decimal places.
@trimbleman yeah here north 3million east11million. South zone. The state south of me totals about 4 to 6ft. All around. That scares me more than the 25 ish feet. Because harder to see at a glance with imagery in background. I can see it very easily when its 25 ft.
Since we went to a foot, why didnt we just go to meters. I know why carpenters dont, but all our software and equipment is in meters and is converted to feet. So...
Since I don't have access to the software that controls equipment such as total stations, recreation-grade GPS, or ESRI products, I don't know if they really use meters as their main unit of measure and convert to something else for display. For all I know there could be some proprietary unit used until just before the result is displayed.
Since we went to a foot, why didnt we just go to meters. I know why carpenters dont, but all our software and equipment is in meters and is converted to feet. So...
I agree. Don't know why we didn't all switch way back during the Carter Admin, when there was a big push, and we had those workbooks in school.
At this point in my life, though, I don't welcome it
Switching from US to international feet
Welcome to the 0.3048 club.
...exactly!
It's gonna be fun, the NGS will continue to publish in USfeet,,,,,,,,soooooo guess what users will put into the black boxes.
Since I don't have access to the software that controls equipment such as total stations, recreation-grade GPS, or ESRI products, I don't know if they really use meters as their main unit of measure and convert to something else for display.
There may be some software packages that are the odd ones out, but in my experience all the industry standards use meters natively.
PNT satellites are positioned using SI units (ECEF meters), and consequently the signals broadcast by each SV are in SI units. The circuit boards of EDMs on total stations use SI units natively, because that's the international standard for the scientific community.
Computations are way easier if everything under the hood is done with the same units that are incoming to the software package, and then simply converted for display. It's also a lot faster and a lot less prone to error.
It's gonna be fun, the NGS will continue to publish in USfeet,,,,,,,,soooooo guess what users will put into the black boxes.
Unless something has changed, they're only publishing USFt until the new datums drop, and they've always published them in the units appropriate for the state in which the station is located...and they've always put the SPCS feet values way down on the datasheets.
I cannot remember ever inputting the SPCS feet values from an NGS datasheet. They have the geodetic values right there at the top.
OPUS reports in meters too. (Is has been a while since I have run a solution myself, did that change recently?)
