EPSG systems

EPSG:26954 NAD83 / Colorado Central

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

System record
CodeEPSG:26954
NameNAD83 / Colorado Central
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use USA - Colorado - SPCS - C
United States (USA) - Colorado - counties Arapahoe; Chaffee; Cheyenne; Clear Creek; Delta; Denver; Douglas; Eagle; El Paso; Elbert; Fremont; Garfield; Gunnison; Jefferson; Kit Carson; Lake; Lincoln; Mesa; Park; Pitkin; Summit; Teller.
Bounds W -109,06° · S 38,14° · E -102,04° · N 40,09°
Countries United States
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
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of false origin37.833333333333336degree
Longitude of false origin-105.5degree
Latitude of 1st standard parallel39.75degree
Latitude of 2nd standard parallel38.45degree
Easting at false origin914401.8289metre
Northing at false origin304800.6096metre

proj4 definition

+proj=lcc +lat_0=37.8333333333333 +lon_0=-105.5 +lat_1=39.75 +lat_2=38.45 +x_0=914401.8289 +y_0=304800.6096 +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:26954.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_StatePlane_Colorado_Central_FIPS_0502",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",914401.8289],PARAMETER["False_Northing",304800.6096],PARAMETER["Central_Meridian",-105.5],PARAMETER["Standard_Parallel_1",39.75],PARAMETER["Standard_Parallel_2",38.45],PARAMETER["Latitude_Of_Origin",37.8333333333333],UNIT["Meter",1.0]]

All systems — United States

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