Mehdi Rezapour - Assistant professor, Department of Civil Engineering, Chabahar Maritime University, Iran
Tom E. Baldock - Professor, School of Civil Engineering, University of Queensland, Australia.

Although coastal zones are attractive for people to live, they are impacted by different natural phenomena, mostly of hydro-meteorological origin, such as waves, wind, tides, and rainfall which can reach extraordinary magnitudes during the occurrence of severe events such as tropical cyclones and tsunami [3,4,5,6].The impact of rainfall within the catchment has been divided into three main steps (Figure 1); the transformation of rainfall into a runoff; the resulting flood flows corresponding to the runoff and thelosses arising from the flood flows.