EPSG:6817 NAD83(CORS96) / Oregon Dufur-Madras zone (ft)
Projected system (Transverse Mercator) in use: USA - Oregon - Dufur-Madras. The full definition below, and conversion in one click.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:6817 |
|---|---|
| Name | NAD83(CORS96) / Oregon Dufur-Madras zone (ft) |
| Type | Projected system — Transverse Mercator |
| Area of use |
USA - Oregon - Dufur-Madras United States (USA) - Oregon - Dufur-Madras area. |
| Bounds | W -121,95° · S 44,63° · E -120,46° · N 45,55° |
| Countries | United States |
| Datum | NAD83 (Continuously Operating Reference Station 1996) |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:6783 — NAD83(CORS96) |
| Unit | foot (X east, Y north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Engineering survey. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 44.5 | degree |
| Longitude of natural origin | -121 | degree |
| Scale factor at natural origin | 1.00011 | unity |
| False easting | 262467.1916 | foot |
| False northing | 0 | foot |
proj4 definition
+proj=tmerc +lat_0=44.5 +lon_0=-121 +k=1.00011 +x_0=79999.99999968 +y_0=0 +ellps=GRS80 +units=ft +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:6817.
WKT (ESRI format, the .prj content)
PROJCS["OCRS_Dufur-Madras_NAD_1983_CORS96_TM_Feet_Intl",GEOGCS["GCS_NAD_1983_CORS96",DATUM["D_NAD_1983_CORS96",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",262467.1916],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-121.0],PARAMETER["Scale_Factor",1.00011],PARAMETER["Latitude_Of_Origin",44.5],UNIT["foot",0.3048]]Other systems — United States
- EPSG:6808NAD83(CORS96) / Oregon Columbia River West zone (m)
- EPSG:6809NAD83(CORS96) / Oregon Columbia River West zone (ft)
- EPSG:6810NAD83(2011) / Oregon Columbia River West zone (m)
- EPSG:6811NAD83(2011) / Oregon Columbia River West zone (ft)
- EPSG:6812NAD83(CORS96) / Oregon Cottage Grove-Canyonville zone (m)
- EPSG:6813NAD83(CORS96) / Oregon Cottage Grove-Canyonville zone (ft)
- EPSG:6814NAD83(2011) / Oregon Cottage Grove-Canyonville zone (m)
- EPSG:6815NAD83(2011) / Oregon Cottage Grove-Canyonville zone (ft)
- EPSG:6816NAD83(CORS96) / Oregon Dufur-Madras zone (m)
- EPSG:6818NAD83(2011) / Oregon Dufur-Madras zone (m)
- EPSG:6819NAD83(2011) / Oregon Dufur-Madras zone (ft)
- EPSG:6820NAD83(CORS96) / Oregon Eugene zone (m)
- EPSG:6821NAD83(CORS96) / Oregon Eugene zone (ft)
- EPSG:6822NAD83(2011) / Oregon Eugene zone (m)
- EPSG:6823NAD83(2011) / Oregon Eugene zone (ft)
- EPSG:6824NAD83(CORS96) / Oregon Grants Pass-Ashland zone (m)
- EPSG:6825NAD83(CORS96) / Oregon Grants Pass-Ashland zone (ft)
- EPSG:6826NAD83(2011) / Oregon Grants Pass-Ashland zone (m)
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.