Flood Management of Urban Areas Due to Possible Failure of the Dam (casestudy: Gheshlagh Dam and Sanandaj City)

Although dams have the potential to achieve macro and national goals, they sometimes also provide the necessary ground for threats to occur. One of these threats is the risk of flooding due to the possible failure of dams for settlements located near them. In this study, the failure of Gheshlagh Dam, a dam located 12 km north of Sanandaj, the capital of Kurdistan Province, has been investigated. The failure of this dam has been analyzed using the HEC-RAS program and the results confirm that after the start of the failure of the dam, in the early stages of the river, the water level rises sharply and submerges the heights on both sides of the river. But the downstream topography of the dam is such that although much of the land around the river is submerged, urban areas are less vulnerable to flood risk. However, given the risk to life on the riverbank, the use of a flood warning system is suggested as an effective solution.