Spatial Data Sources

• USGS : U.S.Geological Survey
  • Geospatial Data One-Stop
  • Geodata Explorer
  • National Mapping Information
    • Products, Information, and Services
    • Data Standards
  • FGDC : Federal Geographic Data Committee
    • Manual of Federal Geographic Data Product
  • SDTS : Spatial Data Transfer Standard
  • NGDC : National Geospatial Data Clearinghouse
    • Popular Digital Geospatial Data Set Collections
    • Digital Geospatial Data Set by Theme
  • GLIS : Global Land Infomation System
    • 1:100,000-Scale Digital Line Graphs
    • 1:200,000-Scale Digital Line Graphs
    • 30 Arc-Sec. DCW Digital Elevation Models
    • 5 Minute Gridded Earth Topography Data
    • Conterminous U.S. AVHRR
    • MultiSpectral Scanner Landsat Data
    • Space Shuttle Earth Observation Program
    • Thematic Mapper Landsat Data
    • USGS Land Use and Land Cover Data
  • EDC : EROS Data Center
    • Earth Explorer
    • Seamless Data Distribution Center">
  • Publications and Data Products
    • Cartographic Data
    • Geologic Data
    • Water Resources Data
  • U.S. GeoData FTP file access - DEM, DLG, LULC

• CENSUS BUREAU
  • TIGER Database
  • 2000 U.S. Census Data
  • 1990 U.S Census Data
  • 1980 Census Data (SEEDIS)
  • Data Maps
  • TIGER Map Services
  • Census State Data Centers

• NOAA : National Oceanic and Atmospheric Administration
  • NOAA Data Set Catalog
  • National Geophysical Data Center (NGDC)
    • World Data Center System
  • National Climatic Data Center (NCDC)
  • National Hurricane Center
  • National Oceanographic Data Center (NODC)
  • Environmental Research Laboratories

• EPA : Environmental Protection Agency
  • Data Systems
  • National GIS Program

• NASA
  • Ames Research Center
  • Earth Observing System Program
  • JPL Data Distribution Laboratory
  • JPL Imaging Radar Home Page
  • JPL Physical Oceanography Distributed Active Archive Center
  • Landsat Program
  • Lidar Application Group
  • Marshall Space Flight Center Hydrologic Cycle DAAC
  • Public Use of Remote Sensing Data (RSD) Program

• The Center for Advanced Spatial Technologies (CAST) - Univ. of Arkansas
  • U.S. Geospatial Data by Theme

• NCAR : National Center for Atmospheric Research

• United Nations
  • United Nations Environment Programme (UNEP), Geneva
    • Global Resource Information Database (GRID), Geneva
    • Global Resource Information Database (GRID), Arendal
    • Global Resource Information Database (GRID), Warsaw

• UKBORDERS: Digitized Boundary Data of U.K.
• ERIN Spatial Data (Australia)

State Data Sources

• National Spatial Data Clearinghouse
• University of Arkansas Library's Guide to Geospatial Data
• Alabama Geological Survey
• Alaska Geospatial Data Clearinghouse (AGDC)
• Arizona Geographic Information Council Public Information Site
• Arkansas : Catalog Of Digital Data
• California Geographical Survey
• Colorado Geospatial Data Clearinghouse (CGDC)
• Connecticut : Map and Geographic Information Center (MAGIC - Univ. of Connecticut)
• Deleware Spatial Data Clearinghouse
• Florida Geographic Data Library (FGDL)
• Georgia GIS Data Clearinghouse (GSDI)
• Hawaii Statewide GIS Program
• Idaho Geospatial Data Center
• Illinois Natural Resources Information Network
• Indiana Geological Survey
• Iowa : Department of Natural Resources GIS Library Catalog
• Iowa Geospatial Data Clearinghouse (IGDC)
• Kansas Data Access and Support Center
• Kentucky Geological Survey
• The Louisiana Statewide GIS (ATLAS)
• Maine GIS Data Catalog
• Maryland Canaan Valley Institute GIS Resources
• Massachsetts Geographic Information System
• Michigan, Department of Natural Resources
• Minnessota Geographic Data Clearinghouse
• Mississippi Automated Resource Information System (MARIS)
• Missouri Spatial Data Information Service (MSDIS)
• Montana Natural Resource Information System
• Nebraska Natural Resources Commission
• New Hampshire GRANIT
• New Jersey Geological Survey Digital Geodata Archive
• New Mexico Earth Data Analysis Center
• NYS Clearinghouse for Geographic Data
• Nevada Earth Sciences and Mining Research Information Center
• North Carolina Geographic Data Clearinghouse
• North Dakota State Data Center (NDSDC)
• Ohio Geographically Referenced Information Program (OGRIP)
• Oklahoma Spatial and Environmental Information clearinghouse
• Oregon Geospatial Data Clearinghouse (OGDC)
• Pennsylvania Spatial Data Access (PASDA)
• Rhode Island Geographic Information System
• South Carolina Dept. of Natural Resources GIS Clearinghouse
• South Dakota Geological Survey
• Tennessee Southern Appalachian Data
• Texas Natural Resources Information System Navigator
• Utah : Automated Geographic Reference Center
• Vermont Center for Geographic Information
• Virginia Geospatial and Statistical Data Center
• Washington State Geospatial Clearinghouse
• West Virginia GIS Technical Center
• Wisconsin : Land Information Clearinghouse
• Wisconsin : State Cartographer's Office
• Wyoming Spatial Data Clearinghouse

Other (Commercial) Data Sources

• GeoCommunity GIS Data Depot
• Geography Network (ESRI)
• Social Science Information Gateway
• Spatial Insights Inc.
• Tobin
• World/U.S. Data for ArcView,Arc/INFO (ESRI)
• DeLorme

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