Texas Orthoimagery Program (TOP) 1996 CIR\BW 1m Orthoimagery

Date(s): Coverage Availability/Geographic Extent: Footprint: Source(s):
1995 Texas 1/4 USGS Quadrangle, County TNRIS

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Data Details

Orthoimagery - Statewide
Available Formats: GeoTiff, MrSID
Alternative Data: None
Derivative Data: Compressed County Mosaics
Known Issues: Age, Color balance, some images black and white
Recommended Uses: Basemap
Spatial Reference:

EPSG 26913, EPSG 26914, EPSG 26915


A set of digital orthophoto images that are produced for the Texas Orthoimagery Program (TOP). TOP is administered by the Texas Department of Information Resources (DIR) on behalf of the Texas GIS Planning Council for the purpose of creating digital orthophoto quarter quadrangles (DOQs) throughout the state. TOP is supported by contributions from the Federal Government, the State of Texas, and local and regional organizations.

The DOQ products produced for the Department of Information Resources and the GIS Planning Council under the Texas Orthoimagery Program reside in the public domain. A digital orthophoto is a raster image of remotely sensed data in which displacement in the image due to sensor orientation and terrain relief have been removed. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The DOQ is a 1-meter ground resolution, quarter-quadrangle (3.75-minutes of latitude by 3.75-minutes of longitude) image cast on the Universal Transverse Mercator Projection (UTM) on the North American Datum of 1983 (NAD83).

Supplemental Information

Tile Index: Download File