Name: NAD83(2011) to WGS 84 (1)
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
Unit: US survey foot
Geodetic CRS: NAD83(2011)
Datum: NAD83 (National Spatial Reference System 2011)
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: Guide to the Illinois State Plane Coordinate System, https://clearinghouse.isgs.illinois.edu
Revision date: 2026-07-23
Scope: Engineering survey, topographic mapping (large and medium scale).
Remarks: Part of the Illinois Coordinate System of 1983 9-zone system. State law for SPCS83 defines use of US survey feet.
Area of use: United States (USA) - Illinois - Marion county.
Coordinate system: Cartesian 2D CS. Axes: northing, easting (N,E). Orientations: north, east. UoM: ftUS.
Center coordinates
-9854942.29 4469240.05
Projected bounds:
-31605759.37 -8793416.96
9521498.27 21192773.43
WGS84 bounds:
167.65 14.92
-63.88 74.71
Definition: OGC Well Known Text
PROJCS["NAD83(2011) / ICS83-Marion (ftUS)", 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_1SP"], PARAMETER["latitude_of_origin",38.65], PARAMETER["central_meridian",-88.9166666666667], PARAMETER["scale_factor",1.00001913], PARAMETER["false_easting",70000], PARAMETER["false_northing",65000], UNIT["US survey foot",0.304800609601219], AUTHORITY["EPSG","22104"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["NAD83(2011) / ICS83-Marion (ftUS)", BASEGEOGCRS["NAD83(2011)", DATUM["NAD83 (National Spatial Reference System 2011)", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[2010]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",6318]], CONVERSION["Illinois Coordinate System of 1983 Marion zone (US survey foot)", METHOD["Lambert Conic Conformal (1SP)", ID["EPSG",9801]], PARAMETER["Latitude of natural origin",38.65, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-88.9166666666667, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",1.00001913, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",70000, LENGTHUNIT["US survey foot",0.304800609601219], ID["EPSG",8806]], PARAMETER["False northing",65000, LENGTHUNIT["US survey foot",0.304800609601219], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["northing (N)",north, ORDER[1], LENGTHUNIT["US survey foot",0.304800609601219]], AXIS["easting (E)",east, ORDER[2], LENGTHUNIT["US survey foot",0.304800609601219]], USAGE[ SCOPE["Engineering survey, topographic mapping (large and medium scale)."], AREA["United States (USA) - Illinois - Marion county."], BBOX[38.47,-89.15,38.83,-88.69]], ID["EPSG",22104]]
Definition: ESRI Well Known Text
PROJCS["NAD83_2011_ICS83-Marion(ftUS)", 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",70000.0], PARAMETER["False_Northing",65000.0], PARAMETER["Central_Meridian",-88.9166666666667], PARAMETER["Standard_Parallel_1",38.65], PARAMETER["Scale_Factor",1.00001913], PARAMETER["Latitude_Of_Origin",38.65], UNIT["US survey foot",0.304800609601219]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "NAD83(2011) / ICS83-Marion (ftUS)", "base_crs": { "type": "GeographicCRS", "name": "NAD83(2011)", "datum": { "type": "GeodeticReferenceFrame", "name": "NAD83 (National Spatial Reference System 2011)", "anchor_epoch": 2010, "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": "Illinois Coordinate System of 1983 Marion zone (US survey foot)", "method": { "name": "Lambert Conic Conformal (1SP)", "id": { "authority": "EPSG", "code": 9801 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 38.65, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": -88.9166666666667, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 1.00001913, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 70000, "unit": { "type": "LinearUnit", "name": "US survey foot", "conversion_factor": 0.304800609601219 }, "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 65000, "unit": { "type": "LinearUnit", "name": "US survey foot", "conversion_factor": 0.304800609601219 }, "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Northing", "abbreviation": "N", "direction": "north", "unit": { "type": "LinearUnit", "name": "US survey foot", "conversion_factor": 0.304800609601219 } }, { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": { "type": "LinearUnit", "name": "US survey foot", "conversion_factor": 0.304800609601219 } } ] }, "scope": "Engineering survey, topographic mapping (large and medium scale).", "area": "United States (USA) - Illinois - Marion county.", "bbox": { "south_latitude": 38.47, "west_longitude": -89.15, "north_latitude": 38.83, "east_longitude": -88.69 }, "id": { "authority": "EPSG", "code": 22104 } }
Definition: GeoServer
22104=PROJCS["NAD83(2011) / ICS83-Marion (ftUS)",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_1SP"],PARAMETER["latitude_of_origin",38.65],PARAMETER["central_meridian",-88.9166666666667],PARAMETER["scale_factor",1.00001913],PARAMETER["false_easting",70000],PARAMETER["false_northing",65000],UNIT["US survey foot",0.304800609601219],AUTHORITY["EPSG","22104"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=lcc +lat_1=38.65 +lat_0=38.65 +lon_0=-88.9166666666667 +k_0=1.00001913 +x_0=21336.0426720853 +y_0=19812.0396240792 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defs +type=crs"> <Layer srs="+proj=lcc +lat_1=38.65 +lat_0=38.65 +lon_0=-88.9166666666667 +k_0=1.00001913 +x_0=21336.0426720853 +y_0=19812.0396240792 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 22104, 'EPSG', 22104, '+proj=lcc +lat_1=38.65 +lat_0=38.65 +lon_0=-88.9166666666667 +k_0=1.00001913 +x_0=21336.0426720853 +y_0=19812.0396240792 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defs +type=crs', 'PROJCS["NAD83(2011) / ICS83-Marion (ftUS)",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_1SP"],PARAMETER["latitude_of_origin",38.65],PARAMETER["central_meridian",-88.9166666666667],PARAMETER["scale_factor",1.00001913],PARAMETER["false_easting",70000],PARAMETER["false_northing",65000],UNIT["US survey foot",0.304800609601219],AUTHORITY["EPSG","22104"]]');