EPSG systems

EPSG:23323 NAD83(2011) / ICS83-Charleston (ftUS)

Projected system (Lambert Conic Conformal (1SP)) in use: USA - Illinois - Coles, Douglas, Edgar. The full definition below, and conversion in one click.

System record
CodeEPSG:23323
NameNAD83(2011) / ICS83-Charleston (ftUS)
TypeProjected system — Lambert Conic Conformal (1SP)
Area of use USA - Illinois - Coles, Douglas, Edgar
United States (USA) - Illinois - counties of Coles, Douglas and Edgar.
Bounds W -88,48° · S 39,37° · E -87,53° · N 39,89°
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 US survey foot (N north, E east)
Transformation to WGS 84 NAD83(2011) to WGS 84 (1) (EPSG:9774) — accuracy 2 m
ScopeEngineering survey, topographic mapping (large and medium scale).

Projection parameters

ParameterValueUnit
Latitude of natural origin39.65degree
Longitude of natural origin-88degree
Scale factor at natural origin1.000024unity
False easting3773000US survey foot
False northing2756000US survey foot

proj4 definition

+proj=lcc +lat_1=39.65 +lat_0=39.65 +lon_0=-88 +k_0=1.000024 +x_0=1150012.7000254 +y_0=840030.48006096 +ellps=GRS80 +units=us-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:23323.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_(2011)_ICS_Charleston_(US_Feet)",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["Lambert_Conformal_Conic"],PARAMETER["False_Easting",3773000.0],PARAMETER["False_Northing",2756000.0],PARAMETER["Central_Meridian",-88.0],PARAMETER["Standard_Parallel_1",39.65],PARAMETER["Scale_Factor",1.000024],PARAMETER["Latitude_Of_Origin",39.65],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.