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Emergency

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

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CAMEO (Computer-Aided Management of Emergency Operations)

  • CAMEO News Service

    The National Oceanic and Atmospheric Administration (NOAA) manages this newsletter to provide important CAMEO information and notice of new software releases. 

    Sign up for updates

CAMEO® (Computer-Aided Management of Emergency Operations) is a system of software applications used to plan for and respond to chemical emergencies. It is developed by EPA and NOAA to assist emergency planners and responders with chemical and all-hazards planning. CAMEO can access, store, and evaluate information critical for developing emergency plans.

  • About CAMEO®

    CAMEO Suite logo showing firefighter helmet in front of laptop

    The CAMEO Software Suite is comprised of five programs that can be used separately or together.

    Learn about CAMEO
  • CAMEO Chemicals

    CAMEO Chemicals logo showing three flasks

    Hazardous chemical database that provides chemical reactivity predictions.

    Download CAMEO Chemicals
  • ALOHA®

    ALOHA logo showing a radar

    Hazard air modeling tool that provides threat zone estimates.

    Download ALOHA
  • MARPLOT®

    MARPLOT logo

    Geographic information system mapping tool designed for emergency planning and response.

    Download MARPLOT
  • CAMEO Data Manager

    CAMEO Data Manager logo

    Database tool used to assist communities with emergency planning and response.

    Download Data Manager
  • Tier2 Submit™

    Tier2 Submit logo

    Program designed for facilities to complete Tier II Chemical Inventory forms.

    Download Tier2 Submit

Key Resources

  • Training and Events
  • Online Resources for CAMEO Users

Affiliated Applications

  • RMP*Comp
  • GNOME Suite for Oil Spill Modeling

Latest Software Versions

  • ALOHA (version 5.4.7, September 2016)
  • CAMEO Chemicals (version 3.1.0, May 2024)
  • CAMEO Data Manager (version 4.4.0, November 2024)
  • MARPLOT (version 5.1.1, December 2017)
  • Tier2 Submit (version 2024, November 2024)
Contact Us about CAMEO to ask a question, provide feedback, or report a problem.
Last updated on January 14, 2025
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