The Department of Energy's GIS group is a catalog of open data created by DOE GIS users. It is intended as a public resource to collect, share, and add valuable resources,... read more

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DOE GIS Users Group

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From the site: "This data set is a digital representation of the printed 1:250,000 geologic maps from the Tennessee Department of Environment and...
News and blogs related to GIS
Includes GIS tutorials (documents, videos, etc)
Open source GIS software available for download