Digital Raster Graphic (DRG) Data
The GeoCommunity & GISDataDepot is pleased to make standard USGS Digital Raster Graphic (DRG) data available via a
number of options: download using GeoCommunity premium data download account, delivered on CD-ROM (simply select add-to-cart option),
or as complete State data bundles (all available data) delivered on CD-ROM. 24k, 100k, and 250k data is available.
From the USGS: A digital raster graphic (DRG) is a scanned
image of a U.S. Geological Survey (USGS)
standard series topographic map, including all
map collar information. The image inside the
map neatline is georeferenced to the surface
of the earth and fit to the Universal Transverse
Mercator projection. The horizontal positional
accuracy and datum of the DRG matches the
accuracy and datum of the source map. The
map is scanned at a minimum resolution of
250 dots per inch.
Looking for a USGS Quad Index?
- A tutorial to help users with Clipping and Stitching together collared DRGs
Processing DRGs Using ARC/INFO -
A tutorial on converting USGS DRGs from State Plane East NAD 27 to UTM NAD 83 using and Removing the Map Collars using ARC/INFO GIS - AMLs included!
Reprojection California DRGs -
some helpful hints on reprojecting California data products obtained from the USGS
Having trouble with DRG data? -
the GeoCommunity FAQ contains answers to a number of common questions.
Download Digital Raster Graphic (DRG) Data
Please Click on a State to access DRG data... (collarless data available in some regions)
Note: The GeoCommunity does not offer any technical support to help you work with data. DRGs are delivered as-is,
as supplied by the USGS. Knowledge of GIS software, and familiarity with common GIS principles will be required in order to use these data.
Click on a State of Choice
Click on the county of choice
Select "Digital Raster Graphics (DRG) - 24K, 10K, or 250K"
you will be presented with a list of available quads
Click the icon (premium downloads) to download the data.
Note: due to the heavy demand for these data, DRGs are available for download only via the Premium Account mechanism
Purchase State DRG Data Bundles on CD-ROM