Oklahoma Center for Geospatial Information

Projection Information for ALL data served or downloaded from OCGI

 

All Statewide Data available from the OCGI site as ArcIMS Mapservices,

including the DOQ/DRG Mapservices are projected in the

Albers Equal Area Conic-USGS Version Projection.

Details for this projection are provided below.

 

All downloadable data thru the interactive download websites,

including the individual DOQ/DRG MrSID Images are also provided in the

Albers Equal Area Conic-USGS Version Projection.

 

Downloadble shapefiles and raster/grid datasets

are available in either the Albers Projection outlined below or as

Geographic Projections in NAD83 format as noted on

the download pages.

 

Spatial Reference Information:

Horizontal coordinate system definition:

Coordinate system name:

*Projected coordinate system name: USA_Contiguous_Albers_Equal_Area_Conic_USGS_version

*Geographic coordinate system name: GCS_North_American_1983

 

Planar:

Map projection:

*Map projection name: Albers Conical Equal Area

 

Albers conical equal area:

*Standard parallel: 29.500000

*Standard parallel: 45.500000

*Longitude of central meridian: -96.000000

*Latitude of projection origin: 23.000000

*False easting: 0.000000

*False northing: 0.000000

 

Planar coordinate information:

*Planar coordinate encoding method: coordinate pair

 

Coordinate representation:

*Abscissa resolution: 0.008192

*Ordinate resolution: 0.008192

*Planar distance units: meters

 

Geodetic model:

*Horizontal datum name: North American Datum of 1983

*Ellipsoid name: Geodetic Reference System 80

*Semi-major axis: 6378137.000000

*Denominator of flattening ratio: 298.257222 

 

 

Bounding coordinates
Horizontal
In decimal degrees
West: -103.048584
East: -94.392968
North: 37.203024
South: 33.428270
In projected or local coordinates
Left: -620858.715528
Right: 141305.593150
Top: 1573506.285188
Bottom: 1173089.350927

© 2003, Oklahoma Center for GeoSpatial Information (OCGI)

Department of Geography, 225 Scott Hall

Oklahoma State University

Stillwater, Oklahoma  74078

ESRI trademarks used herein are property of ESRI
 Last Updated: 1 October 2003

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