Abstract. Today, most understood the importance of the risk of earthquakes with the intensification of the country's development, the rise in urbanization, the concentration of population and material and intellectual capital and increased vulnerability of the capital in the Iran seismic zone. Iran, as one of the most seismic countries in the world, in recent years has witnessed the devastating earthquake, for example can be pointed to earthquakes of Rudbar - Manjil, Bojnoord, Zir Kouh Ghaenat, Bam, Zarand, Silakhor and each of which have enormous human and financial toll. The experience of many countries, that same Iranian plateau are at risk of major earthquakes, but incur losses and lower losses shows that with careful study from past earthquakes data and taking advantage of the studies on the construction of structures can be reduced the damage caused by earthquake. In this study, presented investigation tectonics and statistical analysis of earthquake hazard in Tange Sorkh dam