EPSG systems

EPSG:6597 NAD83(2011) / Washington North (ftUS)

Projected system (Lambert Conic Conformal (2SP)) in use: USA - Washington - SPCS83 - N. The full definition below, and conversion in one click.

System record
CodeEPSG:6597
NameNAD83(2011) / Washington North (ftUS)
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use USA - Washington - SPCS83 - N
United States (USA) - Washington - counties of Chelan; Clallam; Douglas; Ferry; Grant north of approximately 47°30'N; Island; Jefferson; King; Kitsap; Lincoln; Okanogan; Pend Oreille; San Juan; Skagit; Snohomish; Spokane; Stevens; Whatcom.
Bounds W -124,79° · S 47,08° · E -117,02° · N 49,05°
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 (X east, Y north)
Transformation to WGS 84 NAD83(2011) to WGS 84 (1) (EPSG:9774) — accuracy 2 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of false origin47degree
Longitude of false origin-120.83333333333333degree
Latitude of 1st standard parallel48.733333333333334degree
Latitude of 2nd standard parallel47.5degree
Easting at false origin1640416.667US survey foot
Northing at false origin0US survey foot

proj4 definition

+proj=lcc +lat_0=47 +lon_0=-120.833333333333 +lat_1=48.7333333333333 +lat_2=47.5 +x_0=500000.0001016 +y_0=0 +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:6597.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_2011_StatePlane_Washington_North_FIPS_4601_Ft_US",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",1640416.667],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-120.833333333333],PARAMETER["Standard_Parallel_1",48.7333333333333],PARAMETER["Standard_Parallel_2",47.5],PARAMETER["Latitude_Of_Origin",47.0],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.