The two most common triggers of landslides are water and earthquake shaking. Water reduces effective stress and thus contributes to instability; water also plays a key role in the dynamics of debris movement after failure. Earthquake shaking destabilizes slopes and can cause widespread landsliding over a large region. Multiple hazards resulting from these different destabilizing forces are commonly treated separately, even though an integrated approach to the problem is clearly desirable. The purpose of this session is to provide a forum for discussion among researchers and other professionals who study landslides and related hazards caused both by water and by seismic shaking and to encourage multidisciplinary research in these fields.