EPSG:10972

SPCS2022 Gulf Louisiana Shelf zone (ft)

Attributes

Data source: EPSG

Information source: U.S. National Geodetic Survey, https://www.ngs.noaa.gov/

Revision date: 2025-08-11

Scope: Emulation of SPCS27.

Remarks: Emulates offshore part of Louisiana CS27 South zone. NGS definition in meters has FE=609610.287m FN=147761.325m.

Method: Lambert Conic Conformal (1SP)

Area of use: USA - Gulf OCS - Louisiana shelf - leasing areas Sabine Pass; West Cameron, East Cameron, Vermilion, South Marsh Island, Eugene Island, Ship Shoal, South Pelto, Bay Marchand, South Timbalier, Grand Isle, West Delta, South Pass, Breton Sound, Main Pass, Chandeleur.

Description: (0,)

Covered area powered by MapTiler MapTiler logo
SimpleMap
USA - Gulf OCS - Louisiana shelf - leasing areas Sabine Pass; West Cameron, East Cameron, Vermilion, South Marsh Island, Eugene Island, Ship Shoal, South Pelto, Bay Marchand, South Timbalier, Grand Isle, West Delta, South Pass, Breton Sound, Main Pass, Chandeleur.

MapTiler banner

Definition: OGC Well Known Text

PROJECTION["Lambert_Conformal_Conic_1SP"],
PARAMETER["latitude_of_origin",30],
PARAMETER["central_meridian",-91.3333333333333],
PARAMETER["scale_factor",0.9999165],
PARAMETER["false_easting",609610.287],
PARAMETER["false_northing",147761.325]

Definition: OGC Well Known Text 2 (2019)

CONVERSION["SPCS2022 Gulf Louisiana Shelf zone (ft)",
    METHOD["Lambert Conic Conformal (1SP)",
        ID["EPSG",9801]],
    PARAMETER["Latitude of natural origin",30,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8801]],
    PARAMETER["Longitude of natural origin",-91.3333333333333,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8802]],
    PARAMETER["Scale factor at natural origin",0.9999165,
        SCALEUNIT["unity",1],
        ID["EPSG",8805]],
    PARAMETER["False easting",2000033.75,
        LENGTHUNIT["foot",0.3048],
        ID["EPSG",8806]],
    PARAMETER["False northing",484781.25,
        LENGTHUNIT["foot",0.3048],
        ID["EPSG",8807]],
    ID["EPSG",10972]]

Definition: ESRI Well Known Text

PROJECTION["Lambert_Conformal_Conic"],
PARAMETER["False_Easting",609610.287],
PARAMETER["False_Northing",147761.325],
PARAMETER["Central_Meridian",-91.3333333333333],
PARAMETER["Standard_Parallel_1",30.0],
PARAMETER["Scale_Factor",0.9999165],
PARAMETER["Latitude_Of_Origin",30.0]

Definition: PROJ.4

+proj=lcc +lat_1=30 +lat_0=30 +lon_0=-91.3333333333333 +k_0=0.9999165 +x_0=609610.287 +y_0=147761.325

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:10972","+proj=lcc +lat_1=30 +lat_0=30 +lon_0=-91.3333333333333 +k_0=0.9999165 +x_0=609610.287 +y_0=147761.325");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Conversion",
    "name": "SPCS2022 Gulf Louisiana Shelf zone (ft)",
    "method": {
        "name": "Lambert Conic Conformal (1SP)",
        "id": {
            "authority": "EPSG",
            "code": 9801
        }
    },
    "parameters": [
        {
            "name": "Latitude of natural origin",
            "value": 30,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8801
            }
        },
        {
            "name": "Longitude of natural origin",
            "value": -91.3333333333333,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8802
            }
        },
        {
            "name": "Scale factor at natural origin",
            "value": 0.9999165,
            "unit": "unity",
            "id": {
                "authority": "EPSG",
                "code": 8805
            }
        },
        {
            "name": "False easting",
            "value": 2000033.75,
            "unit": {
                "type": "LinearUnit",
                "name": "foot",
                "conversion_factor": 0.3048
            },
            "id": {
                "authority": "EPSG",
                "code": 8806
            }
        },
        {
            "name": "False northing",
            "value": 484781.25,
            "unit": {
                "type": "LinearUnit",
                "name": "foot",
                "conversion_factor": 0.3048
            },
            "id": {
                "authority": "EPSG",
                "code": 8807
            }
        }
    ],
    "id": {
        "authority": "EPSG",
        "code": 10972
    }
}

Definition: GeoServer

10972=PROJECTION["Lambert_Conformal_Conic_1SP"],PARAMETER["latitude_of_origin",30],PARAMETER["central_meridian",-91.3333333333333],PARAMETER["scale_factor",0.9999165],PARAMETER["false_easting",609610.287],PARAMETER["false_northing",147761.325]

Definition: MapServer - MAPfile

PROJECTION
	"proj=lcc"
	"lat_1=30"
	"lat_0=30"
	"lon_0=-91.3333333333333"
	"k_0=0.9999165"
	"x_0=609610.287"
	"y_0=147761.325"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=lcc +lat_1=30 +lat_0=30 +lon_0=-91.3333333333333 +k_0=0.9999165 +x_0=609610.287 +y_0=147761.325">
	<Layer srs="+proj=lcc +lat_1=30 +lat_0=30 +lon_0=-91.3333333333333 +k_0=0.9999165 +x_0=609610.287 +y_0=147761.325">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 10972, 'EPSG', 10972, '+proj=lcc +lat_1=30 +lat_0=30 +lon_0=-91.3333333333333 +k_0=0.9999165 +x_0=609610.287 +y_0=147761.325', 'PROJECTION["Lambert_Conformal_Conic_1SP"],PARAMETER["latitude_of_origin",30],PARAMETER["central_meridian",-91.3333333333333],PARAMETER["scale_factor",0.9999165],PARAMETER["false_easting",609610.287],PARAMETER["false_northing",147761.325]');