Ecology, Environment and Conservation Paper

Vol.18, Issue 2, 2012; Page No.(243-248)

THE EFFECT OF THE INFILTRATION MODELS ON THE AMOUNT OF THE GENERATED FLOOD OF THE LARGE BASIN

Mohamad Saremi Shahab, Saeid Shabanlou and Ahmad Rajabi

Abstract

A comparison was made by means of the hydrologic model, HEC-HMS, which is a software program used to simulate the rainfall-runoff phenomenon. By changing the infiltration models which are as follows: Green & Ampt, initial/constant, SCS Curve No. and deficit/constant separately; the rainfall-runoff as a phenomenon was simulated in the basin of the Hamadan province and the results of this simulation study were compared to each infiltration model. Therefore, it was indicated that the simulated runoff hydrograph with the deficit/constant model in comparison to the rest of the models has got a better conformity to the observe hydrograph and right after that successively the initial/constant , the Green & Ampt and the SCS Curve No are in the next grades.

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