Text Size:   A+ A- A   •   Text Only
Find     
Site Image
Statewide Oregon Coordinate System
Map Coordinate System
Lambert Conformal Conic Projection Model
Lambert Conformal Conic Projection Model
Oregon Lambert
  • Map Projection:Lambert Conformal Conic
  • Grid Coordinate System:Oregon Lambert Projection
  • Parameters:
  • 43 00 00.000 /* 1st standard parallel
  • 45 30 00.000 /* 2nd standard parallel
  • -120 30 0.000 /* central meridian
  • 41 45 0.000 /* latitude of projection's origin
  • 400000.00000 /* false easting (meters), (1,312,335.958 feet)
  • 0.00000 /* false northing (meters)
  • Horizontal Units:International Feet (.3048 meters or 3.280839895 feet / meter)
  • Horizontal Datum:North American Datum of 1983
  • Vertical Datum:North American Vertical Datum of 1988
  • Spheroid: GRS 1980
 
Oregon GIS projection web page at the Oregon Geospatial Data Clearinghouse (OGDC), Salem Oregon

Coordinate System Discussion
In 1995, ODF encouraged GPL (GIS Program Leaders) to examine the projection/coordinate system issue state agencies were using over 10 coordinate systems. A coordinate system being defined as a unique combination of projection, projection parameters, datum, and units. A great deal of time was being used in the translation of data since a lot of data was changing hands. In order to address this issue the GPL formed a committee to try move towards a seamless GIS statewide. The objectives in examining the issue were:

  • There would be in 1 coordinate system or zone for entire state of Oregon .
  • The coordinate system had to be useable by the major software tools.
  • The error due to the coordinate system should be similar to the error associated with state plane used in the US.
  • Acreage measurements should be within .1% of actual
  • Oregon should 'look right' when displayed state wide. i.e. the state should not be rotated or elongated.
  • The system should work with vector and raster datasets In August of 1996 the GPL recommended approval by OGIC (Oregon Geographic Information Council)of the above specifications as the standard for data transfer between state agencies. Following adoption by OGIC ODF adopted the standard as a working coordinate system for all ODF data sets.