EPSG:7121 — NAD83(2011) / RMTCRS Milk River (ft)

Projekte · USA - Montana - Milk River

Tanım Formatları

OGC WKT

PROJCS[
    "NAD83(2011) / RMTCRS Milk River (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_1SP"],
    PARAMETER["latitude_of_origin",48.5],
    PARAMETER["central_meridian",-111],
    PARAMETER["scale_factor",1.000145],
    PARAMETER["false_easting",492125.9843],
    PARAMETER["false_northing",656167.979],
    UNIT["foot",0.3048],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","7121"]
]

WKT2

PROJCRS[
    "NAD83(2011) / RMTCRS Milk River (ft)",
    BASEGEOGCRS[
        "NAD83(2011)",
        DATUM[
            "NAD83 (National Spatial Reference System 2011)",
            ELLIPSOID[
                "GRS 1980",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7019]
            ],
            ANCHOREPOCH[2010],
            ID["EPSG",1116]
        ],
        ID["EPSG",6318]
    ],
    CONVERSION[
        "Montana Milk River (international foot)",
        METHOD["Lambert Conic Conformal (1SP)",ID["EPSG",9801]],
        PARAMETER[
            "Latitude of natural origin",
            48.5000000000003,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            -111,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1.000145,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            492125.9843,
            LENGTHUNIT["foot",0.3048,ID["EPSG",9002]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            656167.979,
            LENGTHUNIT["foot",0.3048,ID["EPSG",9002]],
            ID["EPSG",8807]
        ],
        ID["EPSG",7094]
    ],
    CS[Cartesian,2,ID["EPSG",4495]],
    AXIS["Easting (X)",east],
    AXIS["Northing (Y)",north],
    LENGTHUNIT["foot",0.3048,ID["EPSG",9002]],
    ID["EPSG",7121]
]

PROJ.4

+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000.00001464 +y_0=199999.9999992 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs

Proj4js

Proj4js'a nasıl projeksiyon eklerim? →

proj4.defs("EPSG:7121", "+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000.00001464 +y_0=199999.9999992 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 7121,
  "name": "NAD83(2011) / RMTCRS Milk River (ft)",
  "kind": "projected",
  "area": "USA - Montana - Milk River",
  "unit": "foot",
  "bbox": [
    47.78,
    -112.5,
    49.01,
    -108.74
  ],
  "proj4": "+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000.00001464 +y_0=199999.9999992 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs"
}

PostGIS

PostGIS'a nasıl projeksiyon eklerim? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (7121, 'EPSG', 7121, '+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000.00001464 +y_0=199999.9999992 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs', 'PROJCS["NAD83(2011) / RMTCRS Milk River (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_1SP"],PARAMETER["latitude_of_origin",48.5],PARAMETER["central_meridian",-111],PARAMETER["scale_factor",1.000145],PARAMETER["false_easting",492125.9843],PARAMETER["false_northing",656167.979],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","7121"]]');

MapServer

MapServer'a nasıl projeksiyon eklerim? →

PROJECTION
  "+proj=lcc"
  "+lat_1=48.5"
  "+lat_0=48.5"
  "+lon_0=-111"
  "+k_0=1.000145"
  "+x_0=150000.00001464"
  "+y_0=199999.9999992"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=ft"
  "+no_defs"
  "+type=crs"
END

GeoServer

GeoServer'a nasıl projeksiyon eklerim? →

7121=PROJCS["NAD83(2011) / RMTCRS Milk River (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_1SP"],PARAMETER["latitude_of_origin",48.5],PARAMETER["central_meridian",-111],PARAMETER["scale_factor",1.000145],PARAMETER["false_easting",492125.9843],PARAMETER["false_northing",656167.979],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","7121"]]

İlişkili Koordinat Sistemleri

Mevcut Dönüşümler (5)

Dönüşümler temel CRS'den alınmıştır: EPSG:6318 (NAD83(2011))

Dönüşüm	Kaynak → Hedef	Hassasiyet (m)
NAD83(NSRS2007) to NAD83(2011) (2)	4759 → 6318	0.05
NAD83(NSRS2007) to NAD83(2011) (1)	4759 → 6318	0.05
NAD83(NSRS2007) to NAD83(2011) (3)	4759 → 6318	0.05
NAD83 to NAD83(2011) (1)	4269 → 6318	1
NAD83(2011) to WGS 84 (1)	6318 → 4326	2

NAD83 (National Spatial Reference System 2011) Kullanan Diğer CRS (694)

Sıkça Sorulan Sorular

EPSG:7121 projeksiyonunu GeoServer'a nasıl eklerim?

Aşağıdaki tanımı GeoServer yapılandırma dosyanıza ekleyin:

7121=PROJCS["NAD83(2011) / RMTCRS Milk River (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_1SP"],PARAMETER["latitude_of_origin",48.5],PARAMETER["central_meridian",-111],PARAMETER["scale_factor",1.000145],PARAMETER["false_easting",492125.9843],PARAMETER["false_northing",656167.979],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","7121"]]

GeoServer rehberinin tamamını okuyun →

EPSG:7121 projeksiyonunu PostGIS'e nasıl eklerim?

Aşağıdaki tanımı PostGIS yapılandırma dosyanıza ekleyin:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (7121, 'EPSG', 7121, '+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000.00001464 +y_0=199999.9999992 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs', 'PROJCS["NAD83(2011) / RMTCRS Milk River (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_1SP"],PARAMETER["latitude_of_origin",48.5],PARAMETER["central_meridian",-111],PARAMETER["scale_factor",1.000145],PARAMETER["false_easting",492125.9843],PARAMETER["false_northing",656167.979],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","7121"]]');

PostGIS rehberinin tamamını okuyun →

EPSG:7121 projeksiyonunu MapServer'da nasıl kullanırım?

Aşağıdaki tanımı MapServer yapılandırma dosyanıza ekleyin:

PROJECTION
  "+proj=lcc"
  "+lat_1=48.5"
  "+lat_0=48.5"
  "+lon_0=-111"
  "+k_0=1.000145"
  "+x_0=150000.00001464"
  "+y_0=199999.9999992"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=ft"
  "+no_defs"
  "+type=crs"
END

MapServer rehberinin tamamını okuyun →

EPSG:7121 projeksiyonunu Proj4js ile nasıl kullanırım?

Aşağıdaki tanımı Proj4js yapılandırma dosyanıza ekleyin:

proj4.defs("EPSG:7121", "+proj=lcc +lat_1=48.5 +lat_0=48.5 +lon_0=-111 +k_0=1.000145 +x_0=150000.00001464 +y_0=199999.9999992 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs");

Proj4js rehberinin tamamını okuyun →

Tür

Projekte

Birim

foot

Geodetik CRS

NAD83(2011)

Datum

NAD83 (National Spatial Reference System 2011)

Elipsoid

GRS 1980

Başlangıç Meridyeni

Greenwich

Kullanım Alanı

USA - Montana - Milk River

United States (USA) - Montana - Milk River area.

Koordinat Sistemi

Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: ft.

Merkez Koordinatları

584463.58 618084.99

Projekte Sınırlar

850282.04 123257.811034585.37 397078.72

WGS84 Sınırları

49.01 -112.50-108.74 47.78

Veri Kaynağı

EPSG

Bilgi Kaynağı

Rocky Mountain Tribal Transportation Association RMTCRS Handbook and User Guide; https://www.marls.com/wp-content/uploads/2025/10/RMCRS-Manual-v2.0.pdf

Revizyon Tarihi

2026-02-10

Kapsam

Engineering survey.

Açıklamalar

In area overlapping adjacent zones refer to distortion maps in RMTCRS User Guide to choose system. Working unit is International feet (note: not US survey feet). See NAD83(2011) / RMTCRS Milk River (m) (CRS code 7111) for metric equivalent.

EPSG

7121