Major Web Digital Data Portals

• Geodata.gov - US Maps and Data
• Websites for Digital GIS Data (compiled by Stanford University Library)
• NASA Global Change Master Directory
• Remote Sensing Image Archives (compiled by American Museum of Natural History.)
• USGS Earth Resources Observation and Science (EROS)
• USDA Geospatial Data Gateway
• Remote Sensing Data Directories and Inventories (compiled by Wim Bakker)
• Conservation GeoPortal: Conservation Maps and Data
• Berkeley/Penn Urban and Environmental Modeler's Datakit
• ESRI Resource Center

Oregon Spatial Data Sets

• Oregon Imagery Explorer: Natural Resources Digital Library
• Oregon Geospatial Data Clearinghouse
• Oregon Department of Forestry- State Forests Data
• HJ Andrews LTER Experimental Forest
• Oregon Department of Fisheries and Wildlife
• US Fish and Wildlife Service
• USGS Willamette Basin Data
• Water Rights Data- Oregon Water Resources Department
• University of Oregon Mallard Spatial Data Library
• Northwest Habitat Institute (Select GIS Data Tab on the left panel)
• Portland Metro's Regional Land Information System
• Northwest GeoData Clearinghouse (Geology, PSU)
• Oregon/Washington Bureau of Land Management GIS

Soil Data Sets

• Natural Resources Conservation Service (NRCS)
  • US General Soil Map (NRCS)
  • Soil Survey Geographic (SSURGO) Database
  • NRCS Oregon Soil Survey
• Soil Information for Environmental Modeling & Ecosystem Management (compiled by Penn State U.)

Land Use Land Cover Data Sets

• Multi-Resolution Land Characteristics Consortium - MRLC Consortium Viewer
• USGS Land Cover Data through Land Cover Institute (LCI)

US Spatial Data Sets

• USGS The National Map
• USGS Natioanl Elevation Dataset (NED)
• USGS Elevation data and Digital Line Graphs
• USGS National Atlas
• Major Drainage Areas of the United States (NHDPlus)
• Fish data: StreamNet
• National Snow and Ice Data on Google Earth/
• TIGER data
• National Archive of Criminal Justice Data
• StateMaster - Statistical database on US states
• GIS Data Depot
• Utah Automated Geographic Reference Center (AGRC)
• Connecticut Spatial Data
• Michigan Department of Natural Resources (DNR)
• University of Michigan Map Library

World/International Spatial Data Sets

• The Geography Network
• ESRI ArcGIS Online
• Library of Congress American Memory Geographic Data
• Go Spatial Limited
• Meridian World Data
• World/International Data - Center for International Earth Science Information Network (CIESIN) at Columbia University

Remote Sensing Data

• Oregon Imagery Explorer: Natural Resources Digital Library
• LandSat.Org
• NASA Earth Observing System Clearinghouse (ECHO)
• Satillite Data Sharing Network High-resolution (~30m) Earth observation data: Landsat and ASTER
• Arizona Regional Image Archive
• Microsoft's Terraserver
• Corona: US first photo reconnaissance satellite system (August 1960 ~ May 1972)
• USGS Global Visualization Viewer
  • AmericaView
  • Alabamaview
  • Idahoview
  • Montanaview
  • Ohioview
  • WyomingView