Assessment the Soil Erosion and Sediment Yield with Using of Rainfall-Runoff WMS model (Case Study: Sadal Watershed-West Azerbaijan Province)

Characteristics of basins and their erosion and sedimentation are of great importance in the studies of water resources. Moreover, soil erosion is a problem that causes great damage to the economy of the country every year and reduces or kills soil fertility. Lack of information on soil erosion studies is the most important problem in these basins. Therefore in order to study the corrosion portraying the Sadal watershed erosion using and identify sensitive watersheds MPSIAC models and development effort to review and assess erosion and sedimentation in this area. The results showed that the sensitivity of the nine factors in the model MPSIAC both soil and slope erosion and deposition zone in resonance parameter are effective. The most critical factor in exacerbating erosion on a development model, so that the average increase in steep slope areas are areas of erosion and sediment yield increases. Review erosion and sediment production in both models suggests that the area with the highest erosion and sediment Q1 and its associated sub-basin D is minimal. The minimum difference between the estimated amount of erosion and sedimentation in the basin B (19.23%) and most of the area between Q1 (28/48%) respectively. MPSIAC can estimate the erosion model development. Differences in erosion and sedimentation in sub D has the lowest amount is about 28% In general, estimates of erosion and sediment production in the Sadal watershed model MPSIAC middle class and low class is extensibility. Studies show that much of the West (H) to the East (exit) to move on erosion due to uncontrolled exploitation and overgrazing of pasture and mines as well as industrial and population growth will increase. On the other hand, the scope of the output (Q1) is added to the average value of the slope and the influence of soil type affect the amount of runoff and erosion and consequently increased.