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
metre
NAD83 (National Spatial Reference System 2011)
EPSG
Rocky Mountain Tribal Transportation Association RMTCRS Handbook and User Guide; http://www.neciusa.com/documents/RMTCRS_Manual.pdf
2015-06-18
Engineering survey.
SIn area overlapping adjacent zones refer to distortion maps in RMTCRS User Guide to choose system. In area overlapping adjacent zones refer to distortion maps in RMTCRS User Guide.
United States (USA) - Montana - Milk River area.
Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
-1195437.58 -58842.64
-8222313.58 -3724764.09
5684181.11 4589889.35
167.65 14.92
-63.88 74.71
Definition: OGC Well Known Text
PROJCS["NAD83(2011) / RMTCRS Milk River (m)", 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",48.5], PARAMETER["central_meridian",-111], PARAMETER["scale_factor",1.000145], PARAMETER["false_easting",150000], PARAMETER["false_northing",200000], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","7111"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["NAD83(2011) / RMTCRS Milk River (m)", 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["Montana Milk River (meter)", METHOD["Lambert Conic Conformal (1SP)", ID["EPSG",9801]], PARAMETER["Latitude of natural origin",48.5, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-111, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",1.000145, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",150000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",200000, 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."], AREA["United States (USA) - Montana - Milk River area."], BBOX[47.78,-112.5,49.01,-108.74]], ID["EPSG",7111]]
Definition: ESRI Well Known Text
PROJCS["NAD_1983_2011_RMTCRS_Milk_River_Meters", 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",150000.0], PARAMETER["False_Northing",200000.0], PARAMETER["Central_Meridian",-111.0], PARAMETER["Standard_Parallel_1",48.5], PARAMETER["Scale_Factor",1.000145], PARAMETER["Latitude_Of_Origin",48.5], UNIT["Meter",1.0]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "NAD83(2011) / RMTCRS Milk River (m)", "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": "Montana Milk River (meter)", "method": { "name": "Lambert Conic Conformal (1SP)", "id": { "authority": "EPSG", "code": 9801 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 48.5, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": -111, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 1.000145, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 150000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 200000, "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.", "area": "United States (USA) - Montana - Milk River area.", "bbox": { "south_latitude": 47.78, "west_longitude": -112.5, "north_latitude": 49.01, "east_longitude": -108.74 }, "id": { "authority": "EPSG", "code": 7111 } }
Definition: GeoServer
7111=PROJCS["NAD83(2011) / RMTCRS Milk River (m)",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",48.5],PARAMETER["central_meridian",-111],PARAMETER["scale_factor",1.000145],PARAMETER["false_easting",150000],PARAMETER["false_northing",200000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","7111"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000 +y_0=200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"> <Layer srs="+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000 +y_0=200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 7111, 'EPSG', 7111, '+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000 +y_0=200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["NAD83(2011) / RMTCRS Milk River (m)",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",48.5],PARAMETER["central_meridian",-111],PARAMETER["scale_factor",1.000145],PARAMETER["false_easting",150000],PARAMETER["false_northing",200000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","7111"]]');