Recent earthquake events arising all over the world, cause serious damages to material/ human resources every year. South Korea, categorized to be relatively safe from earthquakes, recently became subject to frequent seismic events, which made it essential to prepare for damages caused by such events. Failure of hydraulic structures, such as dams, can cause serious damages to resources in the lower reaches of a river. In this study, Seismic stability evaluation was performed to determine the crest displacements of dam caused by the 40 earthquake waves recorded actually.