Earthquake Hazards
Hazards
Maps of earthquake shaking hazards provide information essential to creating and updating the seismic design provisions of building codes and insurance rates used in the United States. Periodic revisions of these maps incorporate the results of new research.
Learn About Earthquake Hazards
What are the USGS National Seismic Hazard Maps and how are they used? What do I need to know about earthquake hazards? What does "earthquake hazard" mean?
Learn MoreFaults in the U.S.
Interactive fault map and information on known or suspected active faults and folds in the United States. Also, generalized fault data used in the hazard maps.
Find FaultsLearn About Earthquake Hazards
What do I need to know about earthquake hazards? What does "earthquake hazard" mean? What are hazard maps?
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.
Seismic Hazard Maps and Site-Specific Data
U.S. Seismic Hazard Maps, hazard tools, and other products.
Design Ground Motions
Ground motion parameter values for the design of buildings, bridges, and other structures.
Earthquake Scenarios
Earthquake scenarios describe the expected ground motions and effects of specific hypothetical large earthquakes.
Workshops
Workshops are conducted periodically for input into the hazards products.
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 National Seismic Hazard Model (NSHM) updates. In addition, workshops are held for feedback and comments. The next update of the NSHM for the conterminous U.S. (CONUS) will be in 2023.