Flood Zoning of Golestan Dam Downstream Plain in Iran (PAP014018)

Código

PAP014018

Autores

Nima Tavakoli Shirazi, Gholam Hosein Akbari

Tema

Urban Floods

Resumo

Flood is a complex natural disaster and destroying phenomenon that causes considerable annual damage. In addition, floodplain and lands alongside river beds are always in expose of flood hazards, while most of economic and social activities are conducted in these areas. Therefore, in these regions, flood zoning is necessary. Flood zoning maps, could be a suitable and lawful tool for determination of development strategies. In this research, the map of flood zoning with different return periods for a part of Gorgan Rood River, Iran was provided. Hydrological data and information were collected and analyzed. Flood routing by using Muskingum-Cunge method in different reaches was conducted. These data were used in the HEC-RAS model and its report was extracted. Finally, flooding area and flow depth in different return periods were determined. The accuracy and precision of flooding maps were evaluated by comparison with information and local investigations. The results show that by considering the HEC-RAS limitations (reach shortness), the final flooding maps are accurate enough for the aim of this kind of study.