Calaveras Fault

strike-slip — 123 km

HIGH RISK

The Calaveras Fault extends from San Ramon south to Hollister in the San Francisco Bay Area. It exhibits both creep and sudden rupture behavior, posing a significant seismic risk to Silicon Valley communities.

Type

strike slip

Length

123 km

Countries

1

Cities at Risk

3

Risk Assessment

26% chance of M6.7+ before 2043

Last Major Earthquake

M6.2 — Morgan Hill, California (1984-04-24)

Affected Countries

United States

Cities Near This Fault

San Jose

Pop. 1,013,240

Fremont

Pop. 230,504

Hollister

Pop. 42,147

Data: USGS Earthquake Hazards Program