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Conterminous U.S. Seismicity Catalogs

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2023-12-21T00:00:00Z
Based on the ComCat (2022) and following the methods of Mueller (2019) earthquake database, the eight catalogs of seismicity for the conterminous United States was developed for the purposes of accurate seismic hazard evaluations for the National Seismic Hazard Model (NSHM) of 2023.

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