This set of resources provides seismic hazard assessments and information on design values and mitigation for the U.S. and areas around the world. Map resources include the U.S. National and Regional probabilistic ground motion map collection, which covers the 50 states, Puerto Rico, and selected countries. These maps display peak ground acceleration (PGA) values, and are used as the basis for seismic provisions in building codes and for new construction. There is also a custom mapping and analy
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