EPSG systems

EPSG:26782 NAD27 / Louisiana South

Projected system (Lambert Conic Conformal (2SP)) in use: USA - Louisiana - SPCS27 - S. The full definition below, and conversion in one click.

System record
CodeEPSG:26782
NameNAD27 / Louisiana South
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use USA - Louisiana - SPCS27 - S
United States (USA) - Louisiana - counties of Acadia; Allen; Ascension; Assumption; Beauregard; Calcasieu; Cameron; East Baton Rouge; East Feliciana; Evangeline; Iberia; Iberville; Jefferson; Jefferson Davis; Lafayette; LaFourche; Livingston; Orleans; Plaquemines; Pointe Coupee; St Bernard; St Charles; St Helena; St James; St John the Baptist; St Landry; St Martin; St Mary; St Tammany; Tangipahoa; Terrebonne; Vermilion; Washington; West Baton Rouge; West Feliciana. Also Gulf of Mexico outer continental shelf (GoM OCS) protraction areas Sabine Pass (LA); West Cameron; East Cameron; Vermilion; S
Bounds W -93,94° · S 27,82° · E -87,76° · N 31,07°
Countries United States
DatumNorth American Datum 1927
Ellipsoid Clarke 1866 a = 6378206.4 m · 1/f = 294.978698214
Base geographic system EPSG:4267 — NAD27
Unit US survey foot (X east, Y north)
Transformation to WGS 84 NAD27 to WGS 84 (4) (EPSG:1173) — accuracy 10 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of false origin28.666666666666668degree
Longitude of false origin-91.33333333333333degree
Latitude of 1st standard parallel29.3degree
Latitude of 2nd standard parallel30.7degree
Easting at false origin2000000US survey foot
Northing at false origin0US survey foot

proj4 definition

+proj=lcc +lat_0=28.6666666666667 +lon_0=-91.3333333333333 +lat_1=29.3 +lat_2=30.7 +x_0=609601.219202438 +y_0=0 +a=6378206.4000000004 +rf=294.9786982139 +units=us-ft +towgs84=-8,160,176 +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:26782.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1927_StatePlane_Louisiana_South_FIPS_1702",GEOGCS["GCS_North_American_1927",DATUM["D_North_American_1927",SPHEROID["Clarke_1866",6378206.4,294.978698213898]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",2000000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-91.3333333333333],PARAMETER["Standard_Parallel_1",29.3],PARAMETER["Standard_Parallel_2",30.7],PARAMETER["Latitude_Of_Origin",28.6666666666667],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.