EPSG:30791 — Nord Sahara 1959 / Nord Algerie

Projected · Algeria - north of 34°39'N

Export Formats

OGC WKT

PROJCS[
    "Nord Sahara 1959 / Nord Algerie",
    GEOGCS[
        "Nord Sahara 1959",
        DATUM[
            "Nord_Sahara_1959",
            SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],
            TOWGS84[-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4307"]
    ],
    PROJECTION["Lambert_Conformal_Conic_1SP"],
    PARAMETER["latitude_of_origin",36],
    PARAMETER["central_meridian",2.7],
    PARAMETER["scale_factor",0.999625544],
    PARAMETER["false_easting",500135],
    PARAMETER["false_northing",300090],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","30791"]
]

WKT2

PROJCRS[
    "Nord Sahara 1959 / Nord Algerie",
    BASEGEOGCRS[
        "Nord Sahara 1959",
        DATUM[
            "Nord Sahara 1959",
            ELLIPSOID[
                "Clarke 1880 (RGS)",
                6378249.145,
                293.465,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7012]
            ],
            ID["EPSG",6307]
        ],
        ID["EPSG",4307]
    ],
    CONVERSION[
        "Nord Algerie",
        METHOD["Lambert Conic Conformal (1SP)",ID["EPSG",9801]],
        PARAMETER[
            "Latitude of natural origin",
            40,
            ANGLEUNIT["grad",0.015707963267949,ID["EPSG",9105]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            3,
            ANGLEUNIT["grad",0.015707963267949,ID["EPSG",9105]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            0.999625544,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            500135,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            300090,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",18021]
    ],
    CS[Cartesian,2,ID["EPSG",4499]],
    AXIS["Easting (X)",east],
    AXIS["Northing (Y)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",30791]
]

PROJ.4

+proj=lcc +lat_1=36 +lat_0=36 +lon_0=2.7 +k_0=0.999625544 +x_0=500135 +y_0=300090 +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:30791", "+proj=lcc +lat_1=36 +lat_0=36 +lon_0=2.7 +k_0=0.999625544 +x_0=500135 +y_0=300090 +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 30791,
  "name": "Nord Sahara 1959 / Nord Algerie",
  "kind": "projected",
  "area": "Algeria - north of 34°39'N",
  "unit": "metre",
  "bbox": [
    34.64,
    -2.22,
    37.14,
    8.64
  ],
  "proj4": "+proj=lcc +lat_1=36 +lat_0=36 +lon_0=2.7 +k_0=0.999625544 +x_0=500135 +y_0=300090 +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (30791, 'EPSG', 30791, '+proj=lcc +lat_1=36 +lat_0=36 +lon_0=2.7 +k_0=0.999625544 +x_0=500135 +y_0=300090 +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +units=m +no_defs +type=crs', 'PROJCS["Nord Sahara 1959 / Nord Algerie",GEOGCS["Nord Sahara 1959",DATUM["Nord_Sahara_1959",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4307"]],PROJECTION["Lambert_Conformal_Conic_1SP"],PARAMETER["latitude_of_origin",36],PARAMETER["central_meridian",2.7],PARAMETER["scale_factor",0.999625544],PARAMETER["false_easting",500135],PARAMETER["false_northing",300090],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","30791"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=lcc"
  "+lat_1=36"
  "+lat_0=36"
  "+lon_0=2.7"
  "+k_0=0.999625544"
  "+x_0=500135"
  "+y_0=300090"
  "+a=6378249.145"
  "+rf=293.465"
  "+towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

30791=PROJCS["Nord Sahara 1959 / Nord Algerie",GEOGCS["Nord Sahara 1959",DATUM["Nord_Sahara_1959",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4307"]],PROJECTION["Lambert_Conformal_Conic_1SP"],PARAMETER["latitude_of_origin",36],PARAMETER["central_meridian",2.7],PARAMETER["scale_factor",0.999625544],PARAMETER["false_easting",500135],PARAMETER["false_northing",300090],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","30791"]]

Related Coordinate Systems

Available Transformations (19)

Transformations inherited from base CRS: EPSG:4307 (Nord Sahara 1959)

Transformation	Source → Target	Accuracy (m)
Nord Sahara 1959 to WGS 84 (9)	4307 → 4326	1
Nord Sahara 1959 to WGS 84 (11)	4307 → 4326	1
Nord Sahara 1959 to WGS 84 (4)	4307 → 4326	5
Nord Sahara 1959 to WGS 84 (8)	4307 → 4326	5
Nord Sahara 1959 to RGSH2020 (1)	4307 → 10299	5
Nord Sahara 1959 to RGSH2020 (4)	4307 → 10299	5
Nord Sahara 1959 to RGSH2020 (5)	4307 → 10299	5
Nord Sahara 1959 to WGS 84 (7)	4307 → 4326	5
Nord Sahara 1959 to WGS 72BE (1)	4307 → 4324	8
Nord Sahara 1959 to WGS 84 (3)	4307 → 4326	9

Other CRS using Nord Sahara 1959

Frequently Asked Questions

How do I add EPSG:30791 to GeoServer?

Add the following definition to your GeoServer configuration:

30791=PROJCS["Nord Sahara 1959 / Nord Algerie",GEOGCS["Nord Sahara 1959",DATUM["Nord_Sahara_1959",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4307"]],PROJECTION["Lambert_Conformal_Conic_1SP"],PARAMETER["latitude_of_origin",36],PARAMETER["central_meridian",2.7],PARAMETER["scale_factor",0.999625544],PARAMETER["false_easting",500135],PARAMETER["false_northing",300090],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","30791"]]

Read the full GeoServer guide →

How do I add EPSG:30791 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (30791, 'EPSG', 30791, '+proj=lcc +lat_1=36 +lat_0=36 +lon_0=2.7 +k_0=0.999625544 +x_0=500135 +y_0=300090 +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +units=m +no_defs +type=crs', 'PROJCS["Nord Sahara 1959 / Nord Algerie",GEOGCS["Nord Sahara 1959",DATUM["Nord_Sahara_1959",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4307"]],PROJECTION["Lambert_Conformal_Conic_1SP"],PARAMETER["latitude_of_origin",36],PARAMETER["central_meridian",2.7],PARAMETER["scale_factor",0.999625544],PARAMETER["false_easting",500135],PARAMETER["false_northing",300090],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","30791"]]');

Read the full PostGIS guide →

How do I add EPSG:30791 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=lcc"
  "+lat_1=36"
  "+lat_0=36"
  "+lon_0=2.7"
  "+k_0=0.999625544"
  "+x_0=500135"
  "+y_0=300090"
  "+a=6378249.145"
  "+rf=293.465"
  "+towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:30791 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:30791", "+proj=lcc +lat_1=36 +lat_0=36 +lon_0=2.7 +k_0=0.999625544 +x_0=500135 +y_0=300090 +a=6378249.145 +rf=293.465 +towgs84=-209.3622,-87.8162,404.6198,0.0046,3.4784,0.5805,-1.4547 +units=m +no_defs +type=crs");

Read the full Proj4js guide →

Type

Projected

Unit

metre

Geodetic CRS

Nord Sahara 1959

Datum

Nord Sahara 1959

Ellipsoid

Clarke 1880 (RGS)

Prime Meridian

Greenwich

Area of Use

Algeria - north of 34°39'N

Algeria - onshore north of 38.5 grads North (34°39'N).

Coordinate System

Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.

Center Coordinates

546231.60 287996.10

Projected Bounds

442614.87 49335.641027545.05 160612.04

WGS84 Bounds

37.14 -2.228.64 34.64

Data Source

EPSG

Information Source

"Le System Geodesique Nord-Sahara"; IGN Paris

Revision Date

2012-04-18

Scope

Engineering survey, topographic mapping.

Remarks

Replaces Voirol 1879 / Nord Algerie ancienne (code 30493). Grid coordinates on average across Algeria are unchanged although local differences reach 30 metres; geographic coordinate equivalents do change.

EPSG

30791