GeoData@Tufts is the Tufts Geospatial Data Repository which allows you to search, discover, preview, interact, and retrieve geospatial data from university repositories. This is an excellent place to start looking for data!

 Categorized Online Data Sources

Subject

Geographic Region

Clearinghouses

This page lists sources by subject.Popular Topics:
Agriculture
Census (US)
Energy
Environmental Data
Land Characteristics
Transportation
Water
…See full list of topics here.
This page lists sources by geographic region.Popular Locations:
Boston and Local Areas
Massachusetts
New England
U.S.
US States, Cities, and Metros
International
…See full list of topics here.  
This page lists resources by spatial data repositories.Popular Topics:
ArcGIS Online
Geodata.gov
EROS Data Center
GeoCommons Finder!
US National Atlas
MapAbility.com
…See full list of topics here.

Also, check out our tutorial on GIS Literature Search Tips for an overview on how to use Google Scholar to search for peer reviewed GIS Literature for a variety of applications.

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