EPSG systems

EPSG:3798 NAD83 / MTQ Lambert

Projected system (Lambert Conic Conformal (2SP)) in use: Canada - Quebec. The full definition below, and conversion in one click.

System record
CodeEPSG:3798
NameNAD83 / MTQ Lambert
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use Canada - Quebec
Bounds W -79,85° · S 44,99° · E -57,10° · N 62,62°
Countries Canada
DatumNorth American Datum 1983
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:4269 — NAD83
Unit metre (X east, Y north)
Transformation to WGS 84 NAD83 to WGS 84 (1) (EPSG:1188) — accuracy 4 m
ScopeProvince-wide spatial data management.

Projection parameters

ParameterValueUnit
Latitude of false origin44degree
Longitude of false origin-70degree
Latitude of 1st standard parallel50degree
Latitude of 2nd standard parallel46degree
Easting at false origin800000metre
Northing at false origin0metre

proj4 definition

+proj=lcc +lat_0=44 +lon_0=-70 +lat_1=50 +lat_2=46 +x_0=800000 +y_0=0 +a=6378137 +rf=298.257222101 +units=m +towgs84=0,0,0 +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:3798.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_MTQ_Lambert",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",800000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-70.0],PARAMETER["Standard_Parallel_1",50.0],PARAMETER["Standard_Parallel_2",46.0],PARAMETER["Latitude_Of_Origin",44.0],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.