EPSG:15391

SPCS83 Louisiana North zone (US survey foot)

Attributes

Data source: EPSG

Information source: NOAA manual NOS NGS 5

Revision date: 2023-11-22

Scope: Engineering survey, topographic mapping.

Remarks: State law defines grid unit as US Survey feet. For equivalent metric Federal definition see code 11731.

Method: Lambert Conic Conformal (2SP)

Area of use: United States (USA) - Louisiana - counties of Avoyelles; Bienville; Bossier; Caddo; Caldwell; Catahoula; Claiborne; Concordia; De Soto; East Carroll; Franklin; Grant; Jackson; La Salle; Lincoln; Madison; Morehouse; Natchitoches; Ouachita; Rapides; Red River; Richland; Sabine; Tensas; Union; Vernon; Webster; West Carroll; Winn.

Description: (0,)

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SimpleMap
United States (USA) - Louisiana - counties of Avoyelles; Bienville; Bossier; Caddo; Caldwell; Catahoula; Claiborne; Concordia; De Soto; East Carroll; Franklin; Grant; Jackson; La Salle; Lincoln; Madison; Morehouse; Natchitoches; Ouachita; Rapides; Red River; Richland; Sabine; Tensas; Union; Vernon; Webster; West Carroll; Winn.

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Definition: OGC Well Known Text

PROJECTION["Lambert_Conformal_Conic_2SP"],
PARAMETER["latitude_of_origin",30.5],
PARAMETER["central_meridian",-92.5],
PARAMETER["standard_parallel_1",32.6666666666667],
PARAMETER["standard_parallel_2",31.1666666666667],
PARAMETER["false_easting",999999.99998984],
PARAMETER["false_northing",0]

Definition: OGC Well Known Text 2 (2019)

CONVERSION["SPCS83 Louisiana North zone (US survey foot)",
    METHOD["Lambert Conic Conformal (2SP)",
        ID["EPSG",9802]],
    PARAMETER["Latitude of false origin",30.5,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8821]],
    PARAMETER["Longitude of false origin",-92.5,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8822]],
    PARAMETER["Latitude of 1st standard parallel",32.6666666666667,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8823]],
    PARAMETER["Latitude of 2nd standard parallel",31.1666666666667,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8824]],
    PARAMETER["Easting at false origin",3280833.3333,
        LENGTHUNIT["US survey foot",0.304800609601219],
        ID["EPSG",8826]],
    PARAMETER["Northing at false origin",0,
        LENGTHUNIT["US survey foot",0.304800609601219],
        ID["EPSG",8827]],
    ID["EPSG",15391]]

Definition: ESRI Well Known Text

PROJECTION["Lambert_Conformal_Conic"],
PARAMETER["False_Easting",999999.99998984],
PARAMETER["False_Northing",0.0],
PARAMETER["Central_Meridian",-92.5],
PARAMETER["Standard_Parallel_1",32.6666666666667],
PARAMETER["Standard_Parallel_2",31.1666666666667],
PARAMETER["Latitude_Of_Origin",30.5]

Definition: PROJ.4

+proj=lcc +lat_0=30.5 +lon_0=-92.5 +lat_1=32.6666666666667 +lat_2=31.1666666666667 +x_0=999999.99998984 +y_0=0

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:15391","+proj=lcc +lat_0=30.5 +lon_0=-92.5 +lat_1=32.6666666666667 +lat_2=31.1666666666667 +x_0=999999.99998984 +y_0=0");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Conversion",
    "name": "SPCS83 Louisiana North zone (US survey foot)",
    "method": {
        "name": "Lambert Conic Conformal (2SP)",
        "id": {
            "authority": "EPSG",
            "code": 9802
        }
    },
    "parameters": [
        {
            "name": "Latitude of false origin",
            "value": 30.5,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8821
            }
        },
        {
            "name": "Longitude of false origin",
            "value": -92.5,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8822
            }
        },
        {
            "name": "Latitude of 1st standard parallel",
            "value": 32.6666666666667,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8823
            }
        },
        {
            "name": "Latitude of 2nd standard parallel",
            "value": 31.1666666666667,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8824
            }
        },
        {
            "name": "Easting at false origin",
            "value": 3280833.3333,
            "unit": {
                "type": "LinearUnit",
                "name": "US survey foot",
                "conversion_factor": 0.304800609601219
            },
            "id": {
                "authority": "EPSG",
                "code": 8826
            }
        },
        {
            "name": "Northing at false origin",
            "value": 0,
            "unit": {
                "type": "LinearUnit",
                "name": "US survey foot",
                "conversion_factor": 0.304800609601219
            },
            "id": {
                "authority": "EPSG",
                "code": 8827
            }
        }
    ],
    "id": {
        "authority": "EPSG",
        "code": 15391
    }
}

Definition: GeoServer

15391=PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",30.5],PARAMETER["central_meridian",-92.5],PARAMETER["standard_parallel_1",32.6666666666667],PARAMETER["standard_parallel_2",31.1666666666667],PARAMETER["false_easting",999999.99998984],PARAMETER["false_northing",0]

Definition: MapServer - MAPfile

PROJECTION
	"proj=lcc"
	"lat_0=30.5"
	"lon_0=-92.5"
	"lat_1=32.6666666666667"
	"lat_2=31.1666666666667"
	"x_0=999999.99998984"
	"y_0=0"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=lcc +lat_0=30.5 +lon_0=-92.5 +lat_1=32.6666666666667 +lat_2=31.1666666666667 +x_0=999999.99998984 +y_0=0">
	<Layer srs="+proj=lcc +lat_0=30.5 +lon_0=-92.5 +lat_1=32.6666666666667 +lat_2=31.1666666666667 +x_0=999999.99998984 +y_0=0">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 15391, 'EPSG', 15391, '+proj=lcc +lat_0=30.5 +lon_0=-92.5 +lat_1=32.6666666666667 +lat_2=31.1666666666667 +x_0=999999.99998984 +y_0=0', 'PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",30.5],PARAMETER["central_meridian",-92.5],PARAMETER["standard_parallel_1",32.6666666666667],PARAMETER["standard_parallel_2",31.1666666666667],PARAMETER["false_easting",999999.99998984],PARAMETER["false_northing",0]');