Reliability analysis of structures implies the estimate of the limit state probabilities of a structure under adverse/environmental loading. Most important aspect of seismic reliability analysis is identification of all uncertainties, methods for modeling and analysis, analytical formulation of the limit state surface and integration of probability density function. In the seismic reliability analysis of the dam structure, the limit state probability of the structure is integrated with the seismic risk of the site. In this study, Coulee concrete gravity dam structure is modeled and seismic...