EPSG:8721

NAD83 / Colorado Central (ftUS) + NAVD88 height (ftUS)

Attributes

Geodetic CRS: NAD83 / Colorado Central (ftUS) + NAVD88 height (ftUS)

Data source: EPSG

Information source: IOGP

Revision date: 2018-05-13

Scope: Engineering survey, topographic mapping.

Area of use: United States (USA) - Colorado - counties Arapahoe; Chaffee; Cheyenne; Clear Creek; Delta; Denver; Douglas; Eagle; El Paso; Elbert; Fremont; Garfield; Gunnison; Jefferson; Kit Carson; Lake; Lincoln; Mesa; Park; Pitkin; Summit; Teller.

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SimpleMap

Center coordinates
2985813.34 1466781.5

Projected bounds:
1976275.54 1111692.5
3994982.64 1841441.85

WGS84 bounds:
-109.06 38.14
-102.04 40.09

United States (USA) - Colorado - counties Arapahoe; Chaffee; Cheyenne; Clear Creek; Delta; Denver; Douglas; Eagle; El Paso; Elbert; Fremont; Garfield; Gunnison; Jefferson; Kit Carson; Lake; Lincoln; Mesa; Park; Pitkin; Summit; Teller.
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Definition: OGC Well Known Text

COMPD_CS["NAD83 / Colorado Central (ftUS) + NAVD88 height (ftUS)",
    PROJCS["NAD83 / Colorado Central (ftUS)",
        GEOGCS["NAD83",
            DATUM["North_American_Datum_1983",
                SPHEROID["GRS 1980",6378137,298.257222101,
                    AUTHORITY["EPSG","7019"]],
                AUTHORITY["EPSG","6269"]],
            PRIMEM["Greenwich",0,
                AUTHORITY["EPSG","8901"]],
            UNIT["degree",0.0174532925199433,
                AUTHORITY["EPSG","9122"]],
            AUTHORITY["EPSG","4269"]],
        PROJECTION["Lambert_Conformal_Conic_2SP"],
        PARAMETER["latitude_of_origin",37.8333333333333],
        PARAMETER["central_meridian",-105.5],
        PARAMETER["standard_parallel_1",39.75],
        PARAMETER["standard_parallel_2",38.45],
        PARAMETER["false_easting",3000000],
        PARAMETER["false_northing",1000000],
        UNIT["US survey foot",0.304800609601219,
            AUTHORITY["EPSG","9003"]],
        AXIS["Easting",EAST],
        AXIS["Northing",NORTH],
        AUTHORITY["EPSG","2232"]],
    VERT_CS["NAVD88 height (ftUS)",
        VERT_DATUM["North American Vertical Datum 1988",2005,
            AUTHORITY["EPSG","5103"]],
        UNIT["US survey foot",0.304800609601219,
            AUTHORITY["EPSG","9003"]],
        AXIS["Gravity-related height",UP],
        AUTHORITY["EPSG","6360"]],
    AUTHORITY["EPSG","8721"]]

Definition: OGC Well Known Text 2 (2019)

COMPOUNDCRS["NAD83 / Colorado Central (ftUS) + NAVD88 height (ftUS)",
    PROJCRS["NAD83 / Colorado Central (ftUS)",
        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 Colorado Central zone (US survey foot)",
            METHOD["Lambert Conic Conformal (2SP)",
                ID["EPSG",9802]],
            PARAMETER["Latitude of false origin",37.8333333333333,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8821]],
            PARAMETER["Longitude of false origin",-105.5,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8822]],
            PARAMETER["Latitude of 1st standard parallel",39.75,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8823]],
            PARAMETER["Latitude of 2nd standard parallel",38.45,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8824]],
            PARAMETER["Easting at false origin",3000000,
                LENGTHUNIT["US survey foot",0.304800609601219],
                ID["EPSG",8826]],
            PARAMETER["Northing at false origin",1000000,
                LENGTHUNIT["US survey foot",0.304800609601219],
                ID["EPSG",8827]]],
        CS[Cartesian,2],
            AXIS["easting (X)",east,
                ORDER[1],
                LENGTHUNIT["US survey foot",0.304800609601219]],
            AXIS["northing (Y)",north,
                ORDER[2],
                LENGTHUNIT["US survey foot",0.304800609601219]]],
    VERTCRS["NAVD88 height (ftUS)",
        VDATUM["North American Vertical Datum 1988"],
        CS[vertical,1],
            AXIS["gravity-related height (H)",up,
                LENGTHUNIT["US survey foot",0.304800609601219]]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping."],
        AREA["United States (USA) - Colorado - counties Arapahoe; Chaffee; Cheyenne; Clear Creek; Delta; Denver; Douglas; Eagle; El Paso; Elbert; Fremont; Garfield; Gunnison; Jefferson; Kit Carson; Lake; Lincoln; Mesa; Park; Pitkin; Summit; Teller."],
        BBOX[38.14,-109.06,40.09,-102.04]],
    ID["EPSG",8721]]

Definition: ESRI Well Known Text

PROJCS["NAD_1983_StatePlane_Colorado_Central_FIPS_0502_Feet",
    GEOGCS["GCS_North_American_1983",
        DATUM["D_North_American_1983",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Lambert_Conformal_Conic"],
    PARAMETER["False_Easting",3000000.0],
    PARAMETER["False_Northing",1000000.0],
    PARAMETER["Central_Meridian",-105.5],
    PARAMETER["Standard_Parallel_1",39.75],
    PARAMETER["Standard_Parallel_2",38.45],
    PARAMETER["Latitude_Of_Origin",37.8333333333333],
    UNIT["US survey foot",0.304800609601219]],
VERTCS["NAVD88_height_(ftUS)",
    VDATUM["North_American_Vertical_Datum_1988"],
    PARAMETER["Vertical_Shift",0.0],
    PARAMETER["Direction",1.0],
    UNIT["US survey foot",0.304800609601219]]

Definition: PROJ.4

+proj=lcc +lat_0=37.8333333333333 +lon_0=-105.5 +lat_1=39.75 +lat_2=38.45 +x_0=914401.828803658 +y_0=304800.609601219 +datum=NAD83 +units=us-ft +vunits=us-ft +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:8721","+proj=lcc +lat_0=37.8333333333333 +lon_0=-105.5 +lat_1=39.75 +lat_2=38.45 +x_0=914401.828803658 +y_0=304800.609601219 +datum=NAD83 +units=us-ft +vunits=us-ft +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "CompoundCRS",
    "name": "NAD83 / Colorado Central (ftUS) + NAVD88 height (ftUS)",
    "components": [
        {
            "type": "ProjectedCRS",
            "name": "NAD83 / Colorado Central (ftUS)",
            "base_crs": {
                "type": "GeographicCRS",
                "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
                },
                "remarks": "Longitude is POSITIVE EAST. The adjustment included connections to Greenland and Mexico but the system was not adopted there. For applications with an accuracy of better than 1m replaced by NAD83(HARN) in the US and PRVI and by NAD83(CSRS) in Canada."
            },
            "conversion": {
                "name": "SPCS83 Colorado Central zone (US survey foot)",
                "method": {
                    "name": "Lambert Conic Conformal (2SP)",
                    "id": {
                        "authority": "EPSG",
                        "code": 9802
                    }
                },
                "parameters": [
                    {
                        "name": "Latitude of false origin",
                        "value": 37.8333333333333,
                        "unit": "degree",
                        "id": {
                            "authority": "EPSG",
                            "code": 8821
                        }
                    },
                    {
                        "name": "Longitude of false origin",
                        "value": -105.5,
                        "unit": "degree",
                        "id": {
                            "authority": "EPSG",
                            "code": 8822
                        }
                    },
                    {
                        "name": "Latitude of 1st standard parallel",
                        "value": 39.75,
                        "unit": "degree",
                        "id": {
                            "authority": "EPSG",
                            "code": 8823
                        }
                    },
                    {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 38.45,
                        "unit": "degree",
                        "id": {
                            "authority": "EPSG",
                            "code": 8824
                        }
                    },
                    {
                        "name": "Easting at false origin",
                        "value": 3000000,
                        "unit": {
                            "type": "LinearUnit",
                            "name": "US survey foot",
                            "conversion_factor": 0.304800609601219
                        },
                        "id": {
                            "authority": "EPSG",
                            "code": 8826
                        }
                    },
                    {
                        "name": "Northing at false origin",
                        "value": 1000000,
                        "unit": {
                            "type": "LinearUnit",
                            "name": "US survey foot",
                            "conversion_factor": 0.304800609601219
                        },
                        "id": {
                            "authority": "EPSG",
                            "code": 8827
                        }
                    }
                ]
            },
            "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                    {
                        "name": "Easting",
                        "abbreviation": "X",
                        "direction": "east",
                        "unit": {
                            "type": "LinearUnit",
                            "name": "US survey foot",
                            "conversion_factor": 0.304800609601219
                        }
                    },
                    {
                        "name": "Northing",
                        "abbreviation": "Y",
                        "direction": "north",
                        "unit": {
                            "type": "LinearUnit",
                            "name": "US survey foot",
                            "conversion_factor": 0.304800609601219
                        }
                    }
                ]
            }
        },
        {
            "type": "VerticalCRS",
            "name": "NAVD88 height (ftUS)",
            "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
            },
            "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                    {
                        "name": "Gravity-related height",
                        "abbreviation": "H",
                        "direction": "up",
                        "unit": {
                            "type": "LinearUnit",
                            "name": "US survey foot",
                            "conversion_factor": 0.304800609601219
                        }
                    }
                ]
            }
        }
    ],
    "scope": "Engineering survey, topographic mapping.",
    "area": "United States (USA) - Colorado - counties Arapahoe; Chaffee; Cheyenne; Clear Creek; Delta; Denver; Douglas; Eagle; El Paso; Elbert; Fremont; Garfield; Gunnison; Jefferson; Kit Carson; Lake; Lincoln; Mesa; Park; Pitkin; Summit; Teller.",
    "bbox": {
        "south_latitude": 38.14,
        "west_longitude": -109.06,
        "north_latitude": 40.09,
        "east_longitude": -102.04
    },
    "id": {
        "authority": "EPSG",
        "code": 8721
    }
}

Definition: GeoServer

8721=COMPD_CS["NAD83 / Colorado Central (ftUS) + NAVD88 height (ftUS)",PROJCS["NAD83 / Colorado Central (ftUS)",GEOGCS["NAD83",DATUM["North_American_Datum_1983",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4269"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",37.8333333333333],PARAMETER["central_meridian",-105.5],PARAMETER["standard_parallel_1",39.75],PARAMETER["standard_parallel_2",38.45],PARAMETER["false_easting",3000000],PARAMETER["false_northing",1000000],UNIT["US survey foot",0.304800609601219,AUTHORITY["EPSG","9003"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","2232"]],VERT_CS["NAVD88 height (ftUS)",VERT_DATUM["North American Vertical Datum 1988",2005,AUTHORITY["EPSG","5103"]],UNIT["US survey foot",0.304800609601219,AUTHORITY["EPSG","9003"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","6360"]],AUTHORITY["EPSG","8721"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=lcc"
	"lat_0=37.8333333333333"
	"lon_0=-105.5"
	"lat_1=39.75"
	"lat_2=38.45"
	"x_0=914401.828803658"
	"y_0=304800.609601219"
	"datum=NAD83"
	"units=us-ft"
	"vunits=us-ft"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=lcc +lat_0=37.8333333333333 +lon_0=-105.5 +lat_1=39.75 +lat_2=38.45 +x_0=914401.828803658 +y_0=304800.609601219 +datum=NAD83 +units=us-ft +vunits=us-ft +no_defs +type=crs">
	<Layer srs="+proj=lcc +lat_0=37.8333333333333 +lon_0=-105.5 +lat_1=39.75 +lat_2=38.45 +x_0=914401.828803658 +y_0=304800.609601219 +datum=NAD83 +units=us-ft +vunits=us-ft +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 8721, 'EPSG', 8721, '+proj=lcc +lat_0=37.8333333333333 +lon_0=-105.5 +lat_1=39.75 +lat_2=38.45 +x_0=914401.828803658 +y_0=304800.609601219 +datum=NAD83 +units=us-ft +vunits=us-ft +no_defs +type=crs', 'COMPD_CS["NAD83 / Colorado Central (ftUS) + NAVD88 height (ftUS)",PROJCS["NAD83 / Colorado Central (ftUS)",GEOGCS["NAD83",DATUM["North_American_Datum_1983",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4269"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",37.8333333333333],PARAMETER["central_meridian",-105.5],PARAMETER["standard_parallel_1",39.75],PARAMETER["standard_parallel_2",38.45],PARAMETER["false_easting",3000000],PARAMETER["false_northing",1000000],UNIT["US survey foot",0.304800609601219,AUTHORITY["EPSG","9003"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","2232"]],VERT_CS["NAVD88 height (ftUS)",VERT_DATUM["North American Vertical Datum 1988",2005,AUTHORITY["EPSG","5103"]],UNIT["US survey foot",0.304800609601219,AUTHORITY["EPSG","9003"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","6360"]],AUTHORITY["EPSG","8721"]]');