EPSG:26970

NAD83 / Idaho West

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Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

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Method: NADCON

Grid Files: wmhpgn.las wmhpgn.los

Remarks: Parameter files are from NAD83 to NAD83(HARN) (9) (code 1482) assuming that NAD83(HARN) is equivalent to WGS 84 within the accuracy of the transformation.

Information source: OGP

Revision date: 2021-09-10

Attributes

Unit: metre

Geodetic CRS: NAD83

Datum: North American Datum 1983

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Revision date: 2000-03-07

Scope: Engineering survey, topographic mapping.

Remarks: State law defines system in US survey feet. See code 2243 for equivalent non-metric definition. For applications with an accuracy of better than 1m, replaced by NAD83(HARN) / SPCS.

Area of use: United States (USA) - Idaho - counties of Ada; Adams; Benewah; Boise; Bonner; Boundary; Canyon; Clearwater; Elmore; Gem; Idaho; Kootenai; Latah; Lewis; Nez Perce; Owyhee; Payette; Shoshone; Valley; Washington.

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

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Center coordinates
849236.41 426063.93

Projected bounds:
676539.76 35911.52
1027869.4 819717.15

WGS84 bounds:
-117.24 41.99
-113.0 49.01

United States (USA) - Idaho and Montana - west of 113°W.
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Definition: OGC Well Known Text 2 (2019)

PROJCRS["NAD83 / Idaho West",
    BASEGEOGCRS["NAD83",
        DATUM["North American Datum 1983",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4269]],
    CONVERSION["SPCS83 Idaho West zone (meter)",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",41.6666666666667,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",-115.75,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.999933333,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",800000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",0,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    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) - Idaho - counties of Ada; Adams; Benewah; Boise; Bonner; Boundary; Canyon; Clearwater; Elmore; Gem; Idaho; Kootenai; Latah; Lewis; Nez Perce; Owyhee; Payette; Shoshone; Valley; Washington."],
        BBOX[41.99,-117.24,49.01,-114.32]],
    ID["EPSG",26970]]

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "NAD83 / Idaho West",
    "base_crs": {
        "name": "NAD83",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "North American Datum 1983",
            "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": 4269
        }
    },
    "conversion": {
        "name": "SPCS83 Idaho West zone (meter)",
        "method": {
            "name": "Transverse Mercator",
            "id": {
                "authority": "EPSG",
                "code": 9807
            }
        },
        "parameters": [
            {
                "name": "Latitude of natural origin",
                "value": 41.6666666666667,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8801
                }
            },
            {
                "name": "Longitude of natural origin",
                "value": -115.75,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 0.999933333,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 800000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 0,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8807
                }
            }
        ]
    },
    "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) - Idaho - counties of Ada; Adams; Benewah; Boise; Bonner; Boundary; Canyon; Clearwater; Elmore; Gem; Idaho; Kootenai; Latah; Lewis; Nez Perce; Owyhee; Payette; Shoshone; Valley; Washington.",
    "bbox": {
        "south_latitude": 41.99,
        "west_longitude": -117.24,
        "north_latitude": 49.01,
        "east_longitude": -114.32
    },
    "id": {
        "authority": "EPSG",
        "code": 26970
    }
}