EPSG:7120 NAD83(2011) / RMTCRS Blackfeet (ft)
Projected system (Transverse Mercator) in use: USA - Montana - Blackfeet reservation. The full definition below, and conversion in one click.
| Code | EPSG:7120 |
|---|---|
| Name | NAD83(2011) / RMTCRS Blackfeet (ft) |
| Type | Projected system — Transverse Mercator |
| Area of use |
USA - Montana - Blackfeet reservation United States (USA) - Montana - Blackfeet Indian Reservation. |
| Bounds | W -113,84° · S 48,00° · E -112,00° · N 49,01° |
| Countries | United States |
| Datum | NAD83 (National Spatial Reference System 2011) |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:6318 — NAD83(2011) |
| Unit | foot (X east, Y north) |
| Transformation to WGS 84 | NAD83(2011) to WGS 84 (1) (EPSG:9774) — accuracy 2 m |
| Scope | Engineering survey. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 48 | degree |
| Longitude of natural origin | -112.5 | degree |
| Scale factor at natural origin | 1.00019 | unity |
| False easting | 328083.9895 | foot |
| False northing | 0 | foot |
proj4 definition
+proj=tmerc +lat_0=48 +lon_0=-112.5 +k=1.00019 +x_0=99999.9999996 +y_0=0 +ellps=GRS80 +units=ft +towgs84=0,0,0 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:7120.
WKT (ESRI format, the .prj content)
PROJCS["NAD_1983_2011_RMTCRS_Blackfeet_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["Transverse_Mercator"],PARAMETER["False_Easting",328083.9895],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-112.5],PARAMETER["Scale_Factor",1.00019],PARAMETER["Latitude_Of_Origin",48.0],UNIT["foot",0.3048]]Other systems — United States
- EPSG:7110NAD83(2011) / RMTCRS Blackfeet (m)
- EPSG:7111NAD83(2011) / RMTCRS Milk River (m)
- EPSG:7112NAD83(2011) / RMTCRS Fort Belknap (m)
- EPSG:7113NAD83(2011) / RMTCRS Fort Peck Assiniboine (m)
- EPSG:7114NAD83(2011) / RMTCRS Fort Peck Sioux (m)
- EPSG:7115NAD83(2011) / RMTCRS Crow (m)
- EPSG:7116NAD83(2011) / RMTCRS Bobcat (m)
- EPSG:7117NAD83(2011) / RMTCRS Billings (m)
- EPSG:7118NAD83(2011) / RMTCRS Wind River (m)
- EPSG:7119NAD83(2011) / RMTCRS St Mary (ft)
- EPSG:7121NAD83(2011) / RMTCRS Milk River (ft)
- EPSG:7122NAD83(2011) / RMTCRS Fort Belknap (ft)
- EPSG:7123NAD83(2011) / RMTCRS Fort Peck Assiniboine (ft)
- EPSG:7124NAD83(2011) / RMTCRS Fort Peck Sioux (ft)
- EPSG:7125NAD83(2011) / RMTCRS Crow (ft)
- EPSG:7126NAD83(2011) / RMTCRS Bobcat (ft)
- EPSG:7127NAD83(2011) / RMTCRS Billings (ft)
- EPSG:7128NAD83(2011) / RMTCRS Wind River (ftUS)
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.