The gridded difference file AB_CSRS.DAC in STEP 1 will need to be renamed to AB_CSRS.gsb to run in some software suites. Formats identical, but AB file is provincial fit only.
Geodetic Control Section; Land and Forest Svc; Alberta Environment; http://www.gov.ab.ca/env/land/dos/ or email to geoff.banham@gov.ab.ca
2000-10-19
Engineering survey, topographic mapping.
State law defines system in US survey feet. See code 2966 for equivalent non-metric definition. For applications with an accuracy of better than 1m, replaced by NAD83(HARN) / SPCS.
Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
-882343.14 2504379.6
-1483406.52 1784429.04
-359924.11 3214281.35
-120.0 48.99
-109.98 60.0
Definition: OGC Well Known Text
PROJCS["NAD83 / Indiana West", 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["Transverse_Mercator"], PARAMETER["latitude_of_origin",37.5], PARAMETER["central_meridian",-87.0833333333333], PARAMETER["scale_factor",0.999966667], PARAMETER["false_easting",900000], PARAMETER["false_northing",250000], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","26974"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["NAD83 / Indiana 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 Indiana West zone (meter)", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",37.5, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-87.0833333333333, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.999966667, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",900000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",250000, 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) - Indiana - counties of Benton; Boone; Carroll; Clay; Clinton; Crawford; Daviess; Dubois; Fountain; Gibson; Greene; Hendricks; Jasper; Knox; La Porte; Lake; Lawrence; Martin; Monroe; Montgomery; Morgan; Newton; Orange; Owen; Parke; Perry; Pike; Porter; Posey; Pulaski; Putnam; Spencer; Starke; Sullivan; Tippecanoe; Vanderburgh; Vermillion; Vigo; Warren; Warrick; White."], BBOX[37.77,-88.1,41.77,-86.24]], ID["EPSG",26974]]
Definition: ESRI Well Known Text
PROJCS["NAD_1983_StatePlane_Indiana_West_FIPS_1302", 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["Transverse_Mercator"], PARAMETER["False_Easting",900000.0], PARAMETER["False_Northing",250000.0], PARAMETER["Central_Meridian",-87.0833333333333], PARAMETER["Scale_Factor",0.999966667], PARAMETER["Latitude_Of_Origin",37.5], UNIT["Meter",1.0]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "NAD83 / Indiana 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 Indiana West zone (meter)", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 37.5, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": -87.0833333333333, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.999966667, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 900000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 250000, "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) - Indiana - counties of Benton; Boone; Carroll; Clay; Clinton; Crawford; Daviess; Dubois; Fountain; Gibson; Greene; Hendricks; Jasper; Knox; La Porte; Lake; Lawrence; Martin; Monroe; Montgomery; Morgan; Newton; Orange; Owen; Parke; Perry; Pike; Porter; Posey; Pulaski; Putnam; Spencer; Starke; Sullivan; Tippecanoe; Vanderburgh; Vermillion; Vigo; Warren; Warrick; White.", "bbox": { "south_latitude": 37.77, "west_longitude": -88.1, "north_latitude": 41.77, "east_longitude": -86.24 }, "id": { "authority": "EPSG", "code": 26974 } }
Definition: GeoServer
26974=PROJCS["NAD83 / Indiana West",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["Transverse_Mercator"],PARAMETER["latitude_of_origin",37.5],PARAMETER["central_meridian",-87.0833333333333],PARAMETER["scale_factor",0.999966667],PARAMETER["false_easting",900000],PARAMETER["false_northing",250000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","26974"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=tmerc +lat_0=37.5 +lon_0=-87.0833333333333 +k=0.999966667 +x_0=900000 +y_0=250000 +datum=NAD83 +units=m +no_defs +type=crs"> <Layer srs="+proj=tmerc +lat_0=37.5 +lon_0=-87.0833333333333 +k=0.999966667 +x_0=900000 +y_0=250000 +datum=NAD83 +units=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 26974, 'EPSG', 26974, '+proj=tmerc +lat_0=37.5 +lon_0=-87.0833333333333 +k=0.999966667 +x_0=900000 +y_0=250000 +datum=NAD83 +units=m +no_defs +type=crs', 'PROJCS["NAD83 / Indiana West",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["Transverse_Mercator"],PARAMETER["latitude_of_origin",37.5],PARAMETER["central_meridian",-87.0833333333333],PARAMETER["scale_factor",0.999966667],PARAMETER["false_easting",900000],PARAMETER["false_northing",250000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","26974"]]');