Putting Down Roots in Earthquake Country—Your Handbook for the San Francisco Bay Region

Putting Down Roots in Earthquake Country—Your Handbook for the San Francisco Bay Region: "There is a 62% probability that at least one earthquake of magnitude 6.7 or greater will occur on a known or unknown San Francisco Bay region fault before 2032. After a century of study by geologists, many faults have been mapped in the region, but not all faults are apparent at the surface—some quakes occur on previously unknown faults."