Hazards

Request for Hazard Modeling Contributions

The USGS requests that the earthquake hazard community bring to our attention new earthquake source and ground motion data or models that could be included in the NSHM updates. In addition, workshops are held for feedback and comments. The National Seismic Hazard Model will be updated twice over the next 6 years since the 2014 update. View NSHM Schedule 2016-2021.

  • Design Ground Motions

    Ground motion parameter values for building and bridge design.

  • Seismic Hazard Maps and Other Products

    U.S. Seismic Hazard Maps, hazard tools, and other products.

  • Quaternary Faults

    Interactive fault map and comprehensive geologically based information on known or suspected active faults and folds in the United States. Also, generalized fault data used in the hazard maps.

  • Scenarios

    Earthquake Scenarios describe the expected ground motions and effects of specific hypothetical large earthquakes.

What's In My Backyard?

What do I need to know about earthquake hazards? What does "earthquake hazard" mean? What are hazard maps?

Technical Overview and Workshops