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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.

Workshops are conducted periodically for input into the hazards products.

Hazard map from the 2023 50-state update of the National Seismic Hazard Model Project
Earthquake hazard map showing peak ground accelerations having a 2 percent probability of being exceeded in 50 years, for a firm rock site. The map is based on the USGS models for the conterminous U.S. (2023), Hawaii (2021), and Alaska (2023). The models are based on seismicity and fault-slip rates and take into account the frequency of earthquakes of various magnitudes. Locally, the hazard may be greater than shown, because site geology may amplify ground motions.

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

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 model.

Seismic Hazard Model, Maps, and Site-Specific Data
U.S. Seismic Hazard Model, 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 are announced periodically for input into the hazards products.