EPSG systems

EPSG:22265 NAD83(CSRS)v2 / Alberta 3TM ref merid 120 W

Projected system (Transverse Mercator) in use: Canada - Alberta - west of 118.5°W. The full definition below, and conversion in one click.

EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.

System record
CodeEPSG:22265
NameNAD83(CSRS)v2 / Alberta 3TM ref merid 120 W
TypeProjected system — Transverse Mercator
Area of use Canada - Alberta - west of 118.5°W
Canada - Alberta - west of 118°30' W.
Bounds W -120,00° · S 52,88° · E -118,50° · N 60,00°
Countries Canada
DatumNorth American Datum of 1983 (CSRS) version 2
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:8237 — NAD83(CSRS)v2
Unit metre (E east, N north)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeCadastre, survey control and engineering survey in urban areas, typically in all municipalities that previously comprised the 73 Municipal Integrated Surveying and Mapping (MISAM) areas, also known as urban cadastral map areas. For rural areas use UTM.

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin-120degree
Scale factor at natural origin0.9999unity
False easting0metre
False northing0metre

proj4 definition

+proj=tmerc +lat_0=0 +lon_0=-120 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +units=m +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:22265.

WKT (ESRI format, the .prj content)

PROJCS["NAD83(CSRS)v2_Alberta_3TM_ref_merid_120_W",GEOGCS["GCS_NAD83_CSRS_v2",DATUM["North_American_Datum_of_1983_(CSRS)_version_2",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-120.0],PARAMETER["Scale_Factor",0.9999],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Canada

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.