Earthquake-induced soil liquefaction, often described as the phenomena of seismic generation of excess porewater pressures and consequent softening of granular soils, is a leading cause of earthquake damage worldwide. Accurate assessments of where liquefaction is likely and of what the consequences of liquefaction may be are essential.

Assessment methods exist, but methods to assess the potential for liquefaction triggering are more mature than are those to predict liquefaction consequences. This report evaluates these various methods, focusing on those developed within the past 20 years.