- There are hundreds of identified faults in California; about 200 are considered potentially hazardous based on their slip rates in recent geological time (the last 10,000 years).
- More than 70 percent of the state's population resides within 30 miles of a fault where high ground shaking could occur in the next 50 years.
[Information from: "Frequently Asked Earthquake Questions" - "Earthquakes - A Whole Lotta Shakin’ Goin’ On" - State of California - Department of Conservation]