Most earthquake fault zones serve as a general guide of a broader area where potential hazards can exist, meaning that every parcel located within a highlighted area is not necessarily at risk for sinking into the ground should an earthquake hit. While the map shows that most Sonoma County zoned parcels have not been evaluated for seismic landslide or liquefaction hazards, the parcels highlighted in yellow show the homes and businesses that lie within an earthquake fault zone. Liquefaction refers to the process by which water-saturated, unconsolidated sediments are transformed into a substance that acts like a liquid due to stress from earthquake activities. The map also includes features to check if a location is at risk of liquefaction or a landslide triggered by an earthquake. As Tim McCrink, supervising engineering geologist and program manager for seismic hazards for the California Geological Survey told the Los Angeles Times, "When the ground breaks under an existing building, there's a higher chance that the building will collapse." Having access to this information is crucial for homeowners and renters. Simply type in your address or share your location via your smartphone to to find out where you stand. Do you know if your home is in an earthquake fault zone? It's now easier than ever to find out the information, thanks to a new, easy-to-navigate interactive map published by the California Geological Survey.
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