Estimation of soil erosion rates using MPSIAC models (Case Study Gamasiab basin)

ABSTRACT: The research studies in Iran have shown that the MPSIAC model for estimating erosion and sediment yield in watershed level is one of the most common empirical models which have been widespread used in comparison to the other models on ungagged watersheds of Iran. A reason for use of this model is only because of the accuracy of the obtained result. In this study, erosion and sediment yield rates was estimated by MPSIAC model using geographic information system (GIS) in the Gamasiab basin. In order to run the model, the watershed area was divided to 123 homogenous units and the nine factors used in model, were assist in each unit.