Studying the efficiency of HEC-HMS models in simulating the flood of the Kordan stream

Esmaeli, Pedram; Rashidi, Mohammad Mehdi
May 2014
Advances in Natural & Applied Sciences;May2014, Vol. 8 Issue 5, p463
Academic Journal
Flood is one of the most dangerous natural disasters which makes a lot of damages every year and in recent years using the simulating model of HEC-HMS has been common. This is a very valid models in this filed. So, the present research tries to study the efficiency of HEC-HMS model in Kordan stream. In this regard, the curve number method and hydrograph of SCS unit is validated for the procedural model of Mascingam for three events of raining and flooding. One of the events was related to the first half and two events were related to the second half. The results of the analysis of sensitivity of the model have shown that the present model had the maximum sensitivity to the curve number parameter. In addition, the results of the measuring approved the results and showed that the average of the Debi difference of hydrographic peak was about 35.4 percent. But the Debi difference based on the symmetrical halfs were about 15 percent, so it can be said that using the HEC-HMS model had the highest efficiency in simulating the floods of the related the field for the symmetrical half.


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