EPSG systems

EPSG:2876 NAD83(HARN) / Colorado North (ftUS)

Projected system (Lambert Conic Conformal (2SP)) in use: USA - Colorado - SPCS - N. The full definition below, and conversion in one click.

System record
CodeEPSG:2876
NameNAD83(HARN) / Colorado North (ftUS)
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use USA - Colorado - SPCS - N
United States (USA) - Colorado - counties Adams; Boulder; Gilpin; Grand; Jackson; Larimer; Logan; Moffat; Morgan; Phillips; Rio Blanco; Routt; Sedgwick; Washington; Weld; Yuma.
Bounds W -109,06° · S 39,56° · E -102,04° · N 41,01°
Countries United States
DatumNAD83 (High Accuracy Reference Network)
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:4152 — NAD83(HARN)
Unit US survey foot (X east, Y north)
Transformation to WGS 84 NAD83(HARN) to WGS 84 (3) (EPSG:1901) — accuracy 1 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of false origin39.333333333333336degree
Longitude of false origin-105.5degree
Latitude of 1st standard parallel40.78333333333333degree
Latitude of 2nd standard parallel39.71666666666667degree
Easting at false origin3000000US survey foot
Northing at false origin1000000US survey foot

proj4 definition

+proj=lcc +lat_0=39.3333333333333 +lon_0=-105.5 +lat_1=40.7833333333333 +lat_2=39.7166666666667 +x_0=914401.828803658 +y_0=304800.609601219 +ellps=GRS80 +units=us-ft +towgs84=-0.991,1.9072,0.5129,0.02579,0.00965,0.01166,0 +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:2876.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_HARN_StatePlane_Colorado_North_FIPS_0501_Feet",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",3000000.0],PARAMETER["False_Northing",1000000.0],PARAMETER["Central_Meridian",-105.5],PARAMETER["Standard_Parallel_1",40.7833333333333],PARAMETER["Standard_Parallel_2",39.7166666666667],PARAMETER["Latitude_Of_Origin",39.3333333333333],UNIT["US survey foot",0.304800609601219]]

All systems — United States

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