EPSG systems

EPSG:6839 NAD83(2011) / Oregon Ontario zone (ft)

Projected system (Transverse Mercator) in use: USA - Oregon - Ontario. The full definition below, and conversion in one click.

System record
CodeEPSG:6839
NameNAD83(2011) / Oregon Ontario zone (ft)
TypeProjected system — Transverse Mercator
Area of use USA - Oregon - Ontario
United States (USA) - Oregon - Ontario area.
Bounds W -117,90° · S 43,41° · E -116,70° · N 44,65°
Countries United States
DatumNAD83 (National Spatial Reference System 2011)
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:6318 — NAD83(2011)
Unit foot (X east, Y north)
Transformation to WGS 84 NAD83(2011) to WGS 84 (1) (EPSG:9774) — accuracy 2 m
ScopeEngineering survey.

Projection parameters

ParameterValueUnit
Latitude of natural origin43.25degree
Longitude of natural origin-117degree
Scale factor at natural origin1.0001unity
False easting262467.1916foot
False northing0foot

proj4 definition

+proj=tmerc +lat_0=43.25 +lon_0=-117 +k=1.0001 +x_0=79999.99999968 +y_0=0 +ellps=GRS80 +units=ft +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:6839.

WKT (ESRI format, the .prj content)

PROJCS["OCRS_Ontario_NAD_1983_2011_TM_Feet_Intl",GEOGCS["GCS_NAD_1983_2011",DATUM["D_NAD_1983_2011",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",262467.1916],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-117.0],PARAMETER["Scale_Factor",1.0001],PARAMETER["Latitude_Of_Origin",43.25],UNIT["foot",0.3048]]

All systems — United States

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