EPSG:6581

NAD83(2011) / Texas North

Transform Get position on a map

Available transformations
to EPSG:4326
No other targets exist for this CRS

  • Puerto Rico , accuracy 2.0 m, code 9774 (default) [3]

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: For many purposes NAD83(2011) can be considered to be coincident with WGS 84. This approximation ignores the ~2.2m offset of NAD83 from the geocentre, the low accuracy of the WGS 84 ensemble and the application of tectonic plate motion to WGS 84 data.

Information source: IOGP

Revision date: 2021-09-08

Attributes

Unit: metre

Geodetic CRS: NAD83(2011)

Datum: NAD83 (National Spatial Reference System 2011)

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

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

Revision date: 2013-10-15

Scope: Engineering survey, topographic mapping.

Remarks: State law defines use of US survey feet. See code 6582 for equivalent non-metric definition. Replaces NAD83(NSRS2007) / Texas North (CRS code 3667).

Area of use: United States (USA) - Texas - counties of: Armstrong; Briscoe; Carson; Castro; Childress; Collingsworth; Dallam; Deaf Smith; Donley; Gray; Hall; Hansford; Hartley; Hemphill; Hutchinson; Lipscomb; Moore; Ochiltree; Oldham; Parmer; Potter; Randall; Roberts; Sherman; Swisher; Wheeler.

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

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Center coordinates
-1909134.2 2491096.97

Projected bounds:
-8779571.83 -1156299.16
4395260.22 7635744.49

WGS84 bounds:
167.65 14.92
-63.88 74.71

Puerto Rico - onshore and offshore. United States (USA) onshore and offshore - Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming. US Virgin Islands - onshore and offshore.
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Definition: OGC Well Known Text

PROJCS["NAD83(2011) / Texas North",
    GEOGCS["NAD83(2011)",
        DATUM["NAD83_National_Spatial_Reference_System_2011",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[0,0,0,0,0,0,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","6318"]],
    PROJECTION["Lambert_Conformal_Conic_2SP"],
    PARAMETER["latitude_of_origin",34],
    PARAMETER["central_meridian",-101.5],
    PARAMETER["standard_parallel_1",36.1833333333333],
    PARAMETER["standard_parallel_2",34.65],
    PARAMETER["false_easting",200000],
    PARAMETER["false_northing",1000000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","6581"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["NAD83(2011) / Texas North",
    BASEGEOGCRS["NAD83(2011)",
        DATUM["NAD83 (National Spatial Reference System 2011)",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",6318]],
    CONVERSION["SPCS83 Texas North zone (meter)",
        METHOD["Lambert Conic Conformal (2SP)",
            ID["EPSG",9802]],
        PARAMETER["Latitude of false origin",34,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8821]],
        PARAMETER["Longitude of false origin",-101.5,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8822]],
        PARAMETER["Latitude of 1st standard parallel",36.1833333333333,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8823]],
        PARAMETER["Latitude of 2nd standard parallel",34.65,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8824]],
        PARAMETER["Easting at false origin",200000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8826]],
        PARAMETER["Northing at false origin",1000000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8827]]],
    CS[Cartesian,2],
        AXIS["easting (X)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["northing (Y)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping."],
        AREA["United States (USA) - Texas - counties of: Armstrong; Briscoe; Carson; Castro; Childress; Collingsworth; Dallam; Deaf Smith; Donley; Gray; Hall; Hansford; Hartley; Hemphill; Hutchinson; Lipscomb; Moore; Ochiltree; Oldham; Parmer; Potter; Randall; Roberts; Sherman; Swisher; Wheeler."],
        BBOX[34.3,-103.03,36.5,-99.99]],
    ID["EPSG",6581]]

Definition: ESRI Well Known Text

PROJCS["NAD_1983_2011_StatePlane_Texas_North_FIPS_4201",
    GEOGCS["GCS_NAD_1983_2011",
        DATUM["D_NAD_1983_2011",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Lambert_Conformal_Conic"],
    PARAMETER["False_Easting",200000.0],
    PARAMETER["False_Northing",1000000.0],
    PARAMETER["Central_Meridian",-101.5],
    PARAMETER["Standard_Parallel_1",36.1833333333333],
    PARAMETER["Standard_Parallel_2",34.65],
    PARAMETER["Latitude_Of_Origin",34.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=lcc +lat_0=34 +lon_0=-101.5 +lat_1=36.1833333333333 +lat_2=34.65 +x_0=200000 +y_0=1000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:6581","+proj=lcc +lat_0=34 +lon_0=-101.5 +lat_1=36.1833333333333 +lat_2=34.65 +x_0=200000 +y_0=1000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "NAD83(2011) / Texas North",
    "base_crs": {
        "name": "NAD83(2011)",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "NAD83 (National Spatial Reference System 2011)",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 6318
        }
    },
    "conversion": {
        "name": "SPCS83 Texas North zone (meter)",
        "method": {
            "name": "Lambert Conic Conformal (2SP)",
            "id": {
                "authority": "EPSG",
                "code": 9802
            }
        },
        "parameters": [
            {
                "name": "Latitude of false origin",
                "value": 34,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8821
                }
            },
            {
                "name": "Longitude of false origin",
                "value": -101.5,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8822
                }
            },
            {
                "name": "Latitude of 1st standard parallel",
                "value": 36.1833333333333,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8823
                }
            },
            {
                "name": "Latitude of 2nd standard parallel",
                "value": 34.65,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8824
                }
            },
            {
                "name": "Easting at false origin",
                "value": 200000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8826
                }
            },
            {
                "name": "Northing at false origin",
                "value": 1000000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8827
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Easting",
                "abbreviation": "X",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "Y",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Engineering survey, topographic mapping.",
    "area": "United States (USA) - Texas - counties of: Armstrong; Briscoe; Carson; Castro; Childress; Collingsworth; Dallam; Deaf Smith; Donley; Gray; Hall; Hansford; Hartley; Hemphill; Hutchinson; Lipscomb; Moore; Ochiltree; Oldham; Parmer; Potter; Randall; Roberts; Sherman; Swisher; Wheeler.",
    "bbox": {
        "south_latitude": 34.3,
        "west_longitude": -103.03,
        "north_latitude": 36.5,
        "east_longitude": -99.99
    },
    "id": {
        "authority": "EPSG",
        "code": 6581
    }
}

Definition: GeoServer

6581=PROJCS["NAD83(2011) / Texas North",GEOGCS["NAD83(2011)",DATUM["NAD83_National_Spatial_Reference_System_2011",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","6318"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",34],PARAMETER["central_meridian",-101.5],PARAMETER["standard_parallel_1",36.1833333333333],PARAMETER["standard_parallel_2",34.65],PARAMETER["false_easting",200000],PARAMETER["false_northing",1000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6581"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=lcc"
	"lat_0=34"
	"lon_0=-101.5"
	"lat_1=36.1833333333333"
	"lat_2=34.65"
	"x_0=200000"
	"y_0=1000000"
	"ellps=GRS80"
	"towgs84=0,0,0,0,0,0,0"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=lcc +lat_0=34 +lon_0=-101.5 +lat_1=36.1833333333333 +lat_2=34.65 +x_0=200000 +y_0=1000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=lcc +lat_0=34 +lon_0=-101.5 +lat_1=36.1833333333333 +lat_2=34.65 +x_0=200000 +y_0=1000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 6581, 'EPSG', 6581, '+proj=lcc +lat_0=34 +lon_0=-101.5 +lat_1=36.1833333333333 +lat_2=34.65 +x_0=200000 +y_0=1000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["NAD83(2011) / Texas North",GEOGCS["NAD83(2011)",DATUM["NAD83_National_Spatial_Reference_System_2011",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","6318"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",34],PARAMETER["central_meridian",-101.5],PARAMETER["standard_parallel_1",36.1833333333333],PARAMETER["standard_parallel_2",34.65],PARAMETER["false_easting",200000],PARAMETER["false_northing",1000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6581"]]');