Sunday, August 9, 2009

DRG

DRG's are scanned images of USGS topographical maps. This is done so manipulations and other layers may be added to boost the image or present more information. This is a DRG of the Texas State School for the deaf and the area surrounding.
http://www.tceq.state.tx.us/assets/public/gis/images/drg.gif

http://www.tceq.state.tx.us/assets/public/gis/images/drg.gif

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