California Geological Survey

The California Geological Survey released official maps and reports of Seismic Hazard Zones and Alquist-Priolo Earthquake Fault Zones affecting the counties of Contra Costa, Inyo, Kern, Los Angeles, San Bernardino, San Mateo, and Santa Clara.

For 2022, California remained one of the largest producers of non-fuel minerals in the United States. California ranked fourth, accounting for approximately 5.7 percent of the nation’s total. This report discusses production by commodity and summarizes current exploration.

A ShakeMap is a representation of ground shaking produced by an earthquake. Map Sheet 67 compiles all ShakeMaps generated from 1981 to 2023 for earthquakes of magnitude 4.0 and above.