Since most of the human food is supplied by agricultural fields and erosion causes land degradation and abandoned farmlands, soil erosion known as one of the greatest dangers for human wealth and life. Soil erosion and sediment processes are two the most complicated natural phenomena that affected by different factors. One of the most important human factors that influences these two phenomena including land use change, over gragrazing, deforestation, Inappropriate land use management; etc. In this study, we tried to study the effects of some factors like as geological formations, land use, slope features and some of soil properties such as Organic Matter, CaCO 3 , EC, pH, soil particles size and erodibility on produced runoff and sediment using rainfall simulator at Ghale-Ghadm watershed. The results showed that at 5% level geological formations changes have not significatnt differens on produced runoff and sediments. While slope 0.6 and R 2 = 0.74 respectively are most importance effective factors on producing of runoff. In other hand, most effective soil property on sediment produce is EC with R 2 = 0.6. In additional, we calculate multivariate regression equations for dependent runoff and sediment variables, results shows R 2 = 59.52 for sediment and R 2 = 89.61 for runoff.
