Geographic Information Systems (GIS) Services:
Spatial Data Online

GIS Librarian Favorites

Federal Data

State and Local Data

Other Online Guides to Spatial Data

GIS Services (at Davis Reference)

Amanda C. Henley
GIS Librarian
Davis Library

geodata.gov U.S. Maps & Data , "a web-based portal for one-stop access to maps, data and other geospatial services"... "Two Clicks to Content"

FGDC National Geospatial Data Clearinghouse - "The Geospatial Data Clearinghouse is a collection of over 100 spatial data servers, that have digital geographic data primarily for use in Geographic Information Systems (GIS), image processing systems, and other modeling software. These data collections can be searched through a single interface based on their descriptions, or "metadata."

U.S. Census Bureau Geography: links to geographic products, cartographic boundary files: mapping and reference resources, etc.

North American Transportation Atlas from the U.S. Department of Transportation, Bureau of Transportation Statistics

National Geophysical Data Center provides Bathymetry, Topography & Relief data.

U.S. Geological Survey (USGS)

• National Geospatial Program provides links to major portals for geospatial products provided by the federal government.

• EarthExplorer "Query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey."

• Land Processes Distributed Active Archive Center "The archives at EDC hold the world's largest collection of civilian remotely sensed data covering the Earth's land masses."

• GEO-Data Explorer (GEODE) "Use GEO-Data Explorer (GEODE) to access, view, and download information from geo-spatial databases containing a broad spectrum of data produced by the USGS and other government agencies."

• USGS Geographic Data Download. DEMs, DLGs, LULC.

• USGS Publications and other Products