A DRG map, or digital raster graphic map is a scanned image
of a United States Geological Survey (USGS) standard series topographic
map. This was a way of converting
topographic maps into raster format, and these DRG maps cover nearly the entire
United States. DRGs can be ordered
from the USGS for $1 per file, or a scaled-down version can be browsed online. The map above is a DRG map of a common
landmark known in Tallahassee, Lake Ella.
In this DRG map you not only see the lake, but also Raa Middle School
(called Raa Jr. High School on the map) and other city parks.
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