EPSG systems

EPSG:7113 NAD83(2011) / RMTCRS Fort Peck Assiniboine (m)

Projected system (Lambert Conic Conformal (1SP)) in use: USA - Montana - Fort Peck higher areas. The full definition below, and conversion in one click.

System record
CodeEPSG:7113
NameNAD83(2011) / RMTCRS Fort Peck Assiniboine (m)
TypeProjected system — Lambert Conic Conformal (1SP)
Area of use USA - Montana - Fort Peck higher areas
United States (USA) - Montana - Fort Peck Indian Reservation - higher areas, notably in west and north.
Bounds W -107,57° · S 48,01° · E -104,78° · N 48,88°
Countries United States
DatumNAD83 (National Spatial Reference System 2011)
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:6318 — NAD83(2011)
Unit metre (X east, Y north)
Transformation to WGS 84 NAD83(2011) to WGS 84 (1) (EPSG:9774) — accuracy 2 m
ScopeEngineering survey.

Projection parameters

ParameterValueUnit
Latitude of natural origin48.333333333333336degree
Longitude of natural origin-105.5degree
Scale factor at natural origin1.00012unity
False easting200000metre
False northing100000metre

proj4 definition

+proj=lcc +lat_1=48.3333333333333 +lat_0=48.3333333333333 +lon_0=-105.5 +k_0=1.00012 +x_0=200000 +y_0=100000 +ellps=GRS80 +units=m +towgs84=0,0,0 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:7113.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_2011_RMTCRS_Fort_Peck_Assiniboine_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",200000.0],PARAMETER["False_Northing",100000.0],PARAMETER["Central_Meridian",-105.5],PARAMETER["Standard_Parallel_1",48.3333333333333],PARAMETER["Scale_Factor",1.00012],PARAMETER["Latitude_Of_Origin",48.3333333333333],UNIT["Meter",1.0]]

All systems — United States

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.