ABSTRACT
The landslide potential in Shahar Chay Dam reservoir slopes was evaluated in five selected slopes using the WinStabl computer code. The landslides have occurred in some places of Iran. The landslides have reported in slopes in dam reservoirs. For example, Italian Vajont dam accident in which more than 260 million cubic meters of soil slipped into the dam reservoir and produced a wave with the height of about 250 meters. The wave passed the dam and washed Langarone urban area and killed more than 1450 people. The Shahar Chay dam region is partly located in the active sliding zone. In order to determine the earthquake acceleration in stability analysis, probabilistic methods and risk analyses were used. The statistics of the earthquake activities were collected since 1902 by studying about 200 locations around the dam axis which were then used in risk analysis.
