Agencies and Government Portals:

• InvasiveSpecies.gov
• Recreation.gov
• Science.gov
  • Environment and Environmental Quality
• U.S. Bureau of Land Management
• U.S. Department of the Interior
• U.S. Environmental Protection Agency
• U.S. Fish and Wildlife Service
• U.S. Geological Survey
• U.S. Natural Resources Conservation Service (U.S. Dept. of Agriculture)

Publications:

• AirData: Access to Air Pollution Data (EPA)
• AIRNow Air Quality Index (EPA)
• Endangered Species (U.S. Fish and Wilflife Service)
• EnviroFacts Data Warehouse (EPA)
• National Environmental Publications Information System : NEPIS (EPA)
• State of the Land : land use, soil erosion, water quality, wetlands, etc. (Natural Resources Conservation Service)
• Superfund Hazardous Waste Sites (EPA)
• Toxic Release Inventory (TRI) Program (EPA)
• ToxFAQs (Agency for Toxic Substances and Disease Registry)
• ToxNet (National Library of Medicine)
• Water Watch [Current Water Resources Conditions]
• Water Resources of the U.S. (U.S. Geological Survey)