Frequent Questions

How does EPA use Geographic Information Systems in its work? Does EPA have GIS data available online?

Geospatial Resources at EPA contains much of EPA's geospatial data, including EPA Regional Geographic Information Systems (GIS).

Please contact the Geospatial Program for additional information about EPA’s GIS data.

EPA is currently using GIS for the following activities:

  • Environmental Justice Applications
  • Risk Assessment
  • Superfund Site Assessment
  • CBEP Projects
  • Total Maximum Daily Load for streams (TMDL)
  • Track pollutant distribution
  • Identify threatened/endangered species in watersheds
  • R-EMAP: Regional Environmental Monitoring & Assessment Program: Regional scale analyses of water quality and fishery health

EPA has developed publicly accessible geospatial applications to help the public access and visualize environmental information.

You can search EPA's Environmental Dataset Gateway (EDG) for EPA's geospatial data. The EDG is a gateway to Web-based geospatial information and information services. It enables data consumers to discover, view and access geospatial resources (e.g., data, services, or applications) made available by EPA's program offices, regions, and labs.

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