EPSG:3453 NAD83 / Louisiana Offshore (ftUS)
Projected system (Lambert Conic Conformal (2SP)) in use: USA - Louisiana. The full definition below, and conversion in one click.
| Code | EPSG:3453 |
|---|---|
| Name | NAD83 / Louisiana Offshore (ftUS) |
| Type | Projected system — Lambert Conic Conformal (2SP) |
| Area of use |
USA - Louisiana United States (USA) - Louisiana. |
| Bounds | W -94,05° · S 28,85° · E -88,75° · N 33,03° |
| Countries | United States |
| Datum | North American Datum 1983 |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:4269 — NAD83 |
| Unit | US survey foot (X east, Y north) |
| Transformation to WGS 84 | NAD83 to WGS 84 (1) (EPSG:1188) — accuracy 4 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of false origin | 25.5 | degree |
| Longitude of false origin | -91.33333333333333 | degree |
| Latitude of 1st standard parallel | 27.833333333333332 | degree |
| Latitude of 2nd standard parallel | 26.166666666666668 | degree |
| Easting at false origin | 3280833.3333 | US survey foot |
| Northing at false origin | 0 | US survey foot |
proj4 definition
+proj=lcc +lat_0=25.5 +lon_0=-91.3333333333333 +lat_1=27.8333333333333 +lat_2=26.1666666666667 +x_0=999999.99998984 +y_0=0 +a=6378137 +rf=298.257222101 +units=us-ft +towgs84=0,0,0 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:3453.
WKT (ESRI format, the .prj content)
PROJCS["NAD_1983_StatePlane_Louisiana_Offshore_FIPS_1703_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",3280833.3333],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-91.3333333333333],PARAMETER["Standard_Parallel_1",27.8333333333333],PARAMETER["Standard_Parallel_2",26.1666666666667],PARAMETER["Latitude_Of_Origin",25.5],UNIT["US survey foot",0.304800609601219]]Other systems — United States
- EPSG:3441NAD83(HARN) / Arkansas North (ftUS)
- EPSG:3442NAD83(HARN) / Arkansas South (ftUS)
- EPSG:3443NAD83(HARN) / Illinois East (ftUS)
- EPSG:3444NAD83(HARN) / Illinois West (ftUS)
- EPSG:3445NAD83(HARN) / New Hampshire (ftUS)
- EPSG:3446NAD83(HARN) / Rhode Island (ftUS)
- EPSG:3451NAD83 / Louisiana North (ftUS)
- EPSG:3452NAD83 / Louisiana South (ftUS)
- EPSG:3455NAD83 / South Dakota South (ftUS)
- EPSG:3456NAD83(HARN) / Louisiana North (ftUS)
- EPSG:3457NAD83(HARN) / Louisiana South (ftUS)
- EPSG:3458NAD83(HARN) / South Dakota North (ftUS)
- EPSG:3459NAD83(HARN) / South Dakota South (ftUS)
- EPSG:3463NAD83 / Maine CS2000 Central
- EPSG:3464NAD83(HARN) / Maine CS2000 Central
- EPSG:3465NAD83(NSRS2007) / Alabama East
- EPSG:3466NAD83(NSRS2007) / Alabama West
- EPSG:3467NAD83(NSRS2007) / Alaska Albers
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.