EPSG systems

EPSG:8128 NAD83(HARN) / WISCRS Rock (ftUS)

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

System record
CodeEPSG:8128
NameNAD83(HARN) / WISCRS Rock (ftUS)
TypeProjected system — Transverse Mercator
Area of use USA - Wisconsin - Rock
United States (USA) - Wisconsin - Rock county.
Bounds W -89,37° · S 42,49° · E -88,77° · N 42,85°
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.

Projection parameters

ParameterValueUnit
Latitude of natural origin41.94444444444444degree
Longitude of natural origin-89.07222222222222degree
Scale factor at natural origin1.0000337311unity
False easting480000US survey foot
False northing0.022US survey foot

proj4 definition

+proj=tmerc +lat_0=41.9444444444444 +lon_0=-89.0722222222222 +k=1.0000337311 +x_0=146304.292608585 +y_0=0.00670561341122682 +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:8128.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_HARN_WISCRS_Rock_County_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["Transverse_Mercator"],PARAMETER["False_Easting",480000.0],PARAMETER["False_Northing",0.022],PARAMETER["Central_Meridian",-89.0722222222222],PARAMETER["Scale_Factor",1.0000337311],PARAMETER["Latitude_Of_Origin",41.9444444444444],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.