Map Catalog

Monday, November 17, 2008

DLG - Digital line graph



Digital line graphs are digital vector representations of cartographic information derived from USGS maps and related sources. Depending on the scale, layers such as PLSS, boundaries, transportation, hydrography, hypsography, non-vegetative features, survey control and markers, manmade features and vegetative surface cover may be available. The image above is of a 7.5 minute DLG showing boundary, hydrography and transportation layers in Dancyville, TN.

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