EPSG systems

EPSG:2834 NAD83(HARN) / Ohio North

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

System record
CodeEPSG:2834
NameNAD83(HARN) / Ohio North
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use USA - Ohio - SPCS - N
United States (USA) - Ohio - counties of Allen;Ashland; Ashtabula; Auglaize; Carroll; Columbiana; Coshocton; Crawford; Cuyahoga; Defiance; Delaware; Erie; Fulton; Geauga; Hancock; Hardin; Harrison; Henry; Holmes; Huron; Jefferson; Knox; Lake; Logan; Lorain; Lucas; Mahoning; Marion; Medina; Mercer; Morrow; Ottawa; Paulding; Portage; Putnam; Richland; Sandusky; Seneca; Shelby; Stark; Summit; Trumbull; Tuscarawas; Union; Van Wert; Wayne; Williams; Wood; Wyandot.
Bounds W -84,81° · S 40,10° · E -80,51° · N 42,33°
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 metre (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 origin39.666666666666664degree
Longitude of false origin-82.5degree
Latitude of 1st standard parallel41.7degree
Latitude of 2nd standard parallel40.43333333333333degree
Easting at false origin600000metre
Northing at false origin0metre

proj4 definition

+proj=lcc +lat_0=39.6666666666667 +lon_0=-82.5 +lat_1=41.7 +lat_2=40.4333333333333 +x_0=600000 +y_0=0 +ellps=GRS80 +units=m +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:2834.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_HARN_StatePlane_Ohio_North_FIPS_3401",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",600000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-82.5],PARAMETER["Standard_Parallel_1",41.7],PARAMETER["Standard_Parallel_2",40.4333333333333],PARAMETER["Latitude_Of_Origin",39.6666666666667],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.