The USGS study investigated the risk of liquefaction hazards in the Hayward Fault Zone.   The hazard risk is ranked 1-6, with 6 having the highest hazard risk.
Liquefaction refers to the solid earth becoming "liquid-like", whereas water-saturated, unconsolidated sediments are transformed into a substance that acts like a liquid, often in an earthquake. By undermining the foundations of infrastructure and buildings, liquefaction can cause serious damage.

The Hayward Fault Zone is a geologic fault zone centered around the 74 mile long Hayward Fault, capable of delivering massive earthquakes.
[]
nan
nan
nan