Evaluation of sediment estimation of E.P.M and P.S.I.A.C models using geomorphology method (case study: Dehnamak Watershed)

Since wind or water erosion is a phenomenon that causes waste of soil, it is necessary to combat soil erosion through soil conservation practices. Currently, some models have been developed to estimate erosion which should be examined with other existing models in different regions. In this study, PSIAC and EPM models were evaluated in one of the sub watersheds of Hableh rood (Dehnamak) with effects of geomorphologic factors. First of all, using available information and producing required maps at the level of hydrologic units and sub-watersheds existing factors in the models were analyzed in the study area. With regards to lack of statistics and information of MPSIAC model, this model was not used, but to complete PSIAC model geomorphology map and geomorphology faces were produced. The results of sediment estimation using mentioned models indicated that two models of PSIAC with effect of geomorphology and EPM had same results to some extent. In conclusion, comprehensiveness and completeness of PSIAC model, PSIAC with effect of geomorphology factors is recommended to estimate sediment.