Maps

Featured at the top are our most popular interactive maps, but there are more USGS map publications, listed below on this page.

Latest Earthquakes

Latest earthquakes map and list (past 24 hours, M2.5+) from the ANSS (Advanced National Seismic System). Tap/click on "gear icon" for options and settings.

View Earthquake Map

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.

View Fault Map

Earthquake Scenarios

Earthquake scenarios describe the expected ground motions and effects of specific hypothetical large earthquakes.

View Scenario Map

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January 1, 1993

Isopach map showing Quaternary deposits in the Gulf of Santa Catalina area, California

The Gulf of Santa Catalina is part of the California Continental Borderand, an active transform margin characterized by narrow shelves, steep slopes, and deep closed basin separated by shallow banks and islands. The Gulf of Santa Catalina extend from Point Fermin south to San Diego. It is bounded on the west by prominent bedrock ridges, 30 to 45 km offshore, compromising Santa Catalina Island and

Natural Hazards Mission Area, Earthquake Hazards Program, Earthquake Science Center