Geocentric translations (geog2D domain)
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.
IOGP
2021-09-08
foot
NAD83 (National Spatial Reference System 2011)
EPSG
U.S. National Geodetic Survey, http://www.ngs.noaa.gov/
2013-10-12
Engineering survey, topographic mapping.
State law defines use of International feet (note: not US survey feet). Federal definition is metric - see code 6514. Replaces NAD83(NSRS2007) / Montana (ft) (CRS code 3605).
Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: ft.
-2817573.46 777473.63
-25712878.78 -11233469.27
19444916.05 16168319.53
167.65 14.92
-63.88 74.71
Definition: OGC Well Known Text
PROJCS["NAD83(2011) / Montana (ft)", 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",44.25], PARAMETER["central_meridian",-109.5], PARAMETER["standard_parallel_1",49], PARAMETER["standard_parallel_2",45], PARAMETER["false_easting",1968503.937], PARAMETER["false_northing",0], UNIT["foot",0.3048], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","6515"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["NAD83(2011) / Montana (ft)", 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 Montana zone (international foot)", METHOD["Lambert Conic Conformal (2SP)", ID["EPSG",9802]], PARAMETER["Latitude of false origin",44.25, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8821]], PARAMETER["Longitude of false origin",-109.5, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8822]], PARAMETER["Latitude of 1st standard parallel",49, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8823]], PARAMETER["Latitude of 2nd standard parallel",45, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8824]], PARAMETER["Easting at false origin",1968503.937, LENGTHUNIT["foot",0.3048], ID["EPSG",8826]], PARAMETER["Northing at false origin",0, LENGTHUNIT["foot",0.3048], ID["EPSG",8827]]], CS[Cartesian,2], AXIS["easting (X)",east, ORDER[1], LENGTHUNIT["foot",0.3048]], AXIS["northing (Y)",north, ORDER[2], LENGTHUNIT["foot",0.3048]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["United States (USA) - Montana - counties of Beaverhead; Big Horn; Blaine; Broadwater; Carbon; Carter; Cascade; Chouteau; Custer; Daniels; Dawson; Deer Lodge; Fallon; Fergus; Flathead; Gallatin; Garfield; Glacier; Golden Valley; Granite; Hill; Jefferson; Judith Basin; Lake; Lewis and Clark; Liberty; Lincoln; Madison; McCone; Meagher; Mineral; Missoula; Musselshell; Park; Petroleum; Phillips; Pondera; Powder River; Powell; Prairie; Ravalli; Richland; Roosevelt; Rosebud; Sanders; Sheridan; Silver Bow; Stillwater; Sweet Grass; Teton; Toole; Treasure; Valley; Wheatland; Wibaux; Yellowstone."], BBOX[44.35,-116.07,49.01,-104.04]], ID["EPSG",6515]]
Definition: ESRI Well Known Text
PROJCS["NAD_1983_2011_StatePlane_Montana_FIPS_2500_Ft_Intl", 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",1968503.937], PARAMETER["False_Northing",0.0], PARAMETER["Central_Meridian",-109.5], PARAMETER["Standard_Parallel_1",49.0], PARAMETER["Standard_Parallel_2",45.0], PARAMETER["Latitude_Of_Origin",44.25], UNIT["foot",0.3048]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "NAD83(2011) / Montana (ft)", "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 Montana zone (international foot)", "method": { "name": "Lambert Conic Conformal (2SP)", "id": { "authority": "EPSG", "code": 9802 } }, "parameters": [ { "name": "Latitude of false origin", "value": 44.25, "unit": "degree", "id": { "authority": "EPSG", "code": 8821 } }, { "name": "Longitude of false origin", "value": -109.5, "unit": "degree", "id": { "authority": "EPSG", "code": 8822 } }, { "name": "Latitude of 1st standard parallel", "value": 49, "unit": "degree", "id": { "authority": "EPSG", "code": 8823 } }, { "name": "Latitude of 2nd standard parallel", "value": 45, "unit": "degree", "id": { "authority": "EPSG", "code": 8824 } }, { "name": "Easting at false origin", "value": 1968503.937, "unit": { "type": "LinearUnit", "name": "foot", "conversion_factor": 0.3048 }, "id": { "authority": "EPSG", "code": 8826 } }, { "name": "Northing at false origin", "value": 0, "unit": { "type": "LinearUnit", "name": "foot", "conversion_factor": 0.3048 }, "id": { "authority": "EPSG", "code": 8827 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "X", "direction": "east", "unit": { "type": "LinearUnit", "name": "foot", "conversion_factor": 0.3048 } }, { "name": "Northing", "abbreviation": "Y", "direction": "north", "unit": { "type": "LinearUnit", "name": "foot", "conversion_factor": 0.3048 } } ] }, "scope": "Engineering survey, topographic mapping.", "area": "United States (USA) - Montana - counties of Beaverhead; Big Horn; Blaine; Broadwater; Carbon; Carter; Cascade; Chouteau; Custer; Daniels; Dawson; Deer Lodge; Fallon; Fergus; Flathead; Gallatin; Garfield; Glacier; Golden Valley; Granite; Hill; Jefferson; Judith Basin; Lake; Lewis and Clark; Liberty; Lincoln; Madison; McCone; Meagher; Mineral; Missoula; Musselshell; Park; Petroleum; Phillips; Pondera; Powder River; Powell; Prairie; Ravalli; Richland; Roosevelt; Rosebud; Sanders; Sheridan; Silver Bow; Stillwater; Sweet Grass; Teton; Toole; Treasure; Valley; Wheatland; Wibaux; Yellowstone.", "bbox": { "south_latitude": 44.35, "west_longitude": -116.07, "north_latitude": 49.01, "east_longitude": -104.04 }, "id": { "authority": "EPSG", "code": 6515 } }
Definition: GeoServer
6515=PROJCS["NAD83(2011) / Montana (ft)",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",44.25],PARAMETER["central_meridian",-109.5],PARAMETER["standard_parallel_1",49],PARAMETER["standard_parallel_2",45],PARAMETER["false_easting",1968503.937],PARAMETER["false_northing",0],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6515"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=lcc +lat_0=44.25 +lon_0=-109.5 +lat_1=49 +lat_2=45 +x_0=599999.9999976 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs"> <Layer srs="+proj=lcc +lat_0=44.25 +lon_0=-109.5 +lat_1=49 +lat_2=45 +x_0=599999.9999976 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 6515, 'EPSG', 6515, '+proj=lcc +lat_0=44.25 +lon_0=-109.5 +lat_1=49 +lat_2=45 +x_0=599999.9999976 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs', 'PROJCS["NAD83(2011) / Montana (ft)",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",44.25],PARAMETER["central_meridian",-109.5],PARAMETER["standard_parallel_1",49],PARAMETER["standard_parallel_2",45],PARAMETER["false_easting",1968503.937],PARAMETER["false_northing",0],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6515"]]');