Abstract—One of the most important subjects in river engineering is flow routing analysis of rivers which pass through important areas. Flood routing analysis includes determination of flood hydrograph and water levels at different points of flow route. Flood routing in a prismatic channel obtained with solving simultaneous continuity and momentum equation which are known as Saint – Venant equations. If inertia terms in Saint – Venant equations is removed, flow equation with complete inertia terms will be converted to diffusive equation [1]. In this study we have compared the results of full wave and diffusion wave flood routing methods in a reach of Karun river's between Mollasani and Ahvaz station. The results showed that, this methodology has a good agreement. Hence flood routing simulations using analytical, semi-analytical and numerical solution of diffusion type of Saint – Venant equations can be used in this part of Karun river.

Index Terms—Flood Routing, MIKE11, Karun river, Mollasani, Ahvaz.

M. Sc student in Civil engineering, Islamic Azad University, Shoushtar Branch, Young Researchers Club, Iran.
Mohammad Mahmoodian Shooshtari, Faculty member of civil engineering, Islamic Azad University, Shoushtar Branch, Iran.
Houshang Hassoni Zadeh, Faculty member of civil engineering, Islamic Azad University, Shoushtar Branch, Iran.

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Cite: Mehdi Delphi, Mohammad Mahmoodian Shooshtari, Houshang Hassoni Zadeh, "Application of Diffusion Wave Method for Flood Routing in Karun River," International Journal of Environmental Science and Development vol. 1, no. 5, pp. 432-434, 2010.