...among the available soil erosion and sediment yield models, those which can predict both soil erosion and sediment yield can be more useful and more widely used. Because of the complexity of factors influencing sediment delivery ratio (SDR) as the ratio between soil erosion and sediment yield, it is very important to predict and use of this ratio correctly (Behzadfar et al., 2014; Khaledi Darvishan et al., 2012; Vujacic et al., 2017; Vujacic et al., 2015). Drainage density, G, was calculated as 1.55 km km-2 which corresponds to low density of the hydrographic network. Because of the location of the study area as a low slope inter basin in the middle of high slopes surrounded, the drainage density was not high. ...that the total peak flow of the river in the outlet of the study area can be calculated by adding 13.51 m3s-1 with other three peaks (58.34, 75.53 and 89.47 m3s-1). ...the total peak flow of 236.85 m3s-1 is expected to be seen at the outlet of the study area for a return period of 100 years. The total production of sediments, or total soil erosion occurred in the study area, Wyear, was predicted as 1624.361 m3 year-1 (8.06 ton ha-1 year-1); and the coefficient of the deposit retention, Ru, was 0.124 which indicated that about 12.4% of the eroded materials will reach to the river network of the studied subwatershed. ...the sediment yield, or real/net soil loss at sub-watershed outlet (Gyear) was predicted as 76.93 m3 km-2 year-1 (1.00 ton ha-1 year-1).