Finding Data Online

You can either follow the next few suggestions or jump to the list of commonly used websites.

1. Google it. Searching for a combination of terms such as, “download DEM Ohio GIS data” or “California roads GIS download data” frequently will lead to you to basic, recent data.
2. If you’re looking for information the government provides (e.g., population data, land use, topography, etc.), you should look on government websites such as the USGS  or the US Census TIGER data .
3. Looking for data from a particular state? Find a major university in that state with a GIS database. Major universities often have their own GIS centers with links to state data or other frequently used websites. Unfortunately, these data centers are not always accessible by non-university students. 
4. Much data can alternatively be found on state data on such clearinghouse websites as OhioGRIP’s data section .

  • Ohio Geographically Referenced Information Program (OGRIP ) - select Statewide Imagery or Ohio Metadata Server
  • Ohio Department of Natural Resources (ODNR )

  • The National Map Viewer  for orthoimagery, topographic, land-use data, and more
  • USGS Earth Explorer 
  • “Using GIS and Remote Sensing to Teach Geoscience in the 21st Century” main data resource page 
  • “Using GIS and Remote Sensing to Teach Geoscience in the 21st Century” list of resources 
  • Data.gov , huge collection of government-generated data ranging from EPA to BLM to NPS
  • Open Topography ,for hi-res DEMs, hillsides for GoogleEarth, and some LiDAR data
  • CGIAR-CSI  SRTM 90m Digital Elevation Data for over 80 percent of the globe

  • The National Map Viewer  for orthoimagery, topographic, land-use data, and more
  • Open Topography   for hi-res DEMs, hillsides for GoogleEarth, and some LiDAR data
  • CGIAR-SCI  SRTM 90m Digital Elevation Data for over 80 percent of the globe

  • The National Map Viewer  for orthoimagery, topographic, land-use data, and more
  • Data.gov , huge collection of govt generated data  ranging from EPA to BLM to NPS