U.S. Environmental Protection Agency

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This interactive web-based application draws environmental data from publicly available federal, state, and local GIS sources and web services and provides immediate screening of environmental assessment indicators for a user-defined area of interest. This information includes data on regulated facilities, demographics, historic places, threatened and endangered species, wetlands, and other topics. These features contribute to a streamlined review process that potentially raises important environmental issues at the earliest stages of project development.

NEPAssist Homepage


  • Ingests data from user-defined web services
  • Creates customizable reports and analyses that can be saved as Excel or PDF files
  • Integrates with U.S. Fish and Wildlife Service IPaC tool