Calculation of Sediment Yield in the S2-1 Watershed of the Shirindareh River Basin, Iran

Abstract

SUMMARYSoil erosion by water as a natural process can occur in all climates and zones and change all landforms. As the measuring of soil erosion is costly and time consuming process, dozens of erosion prediction models have been developed and the aim of the majority of all of them is to predict average rates (often an annual average rate) of soil loss from an area such as a plot, a field or a catchment/watershed under various land management techniques. On the other hand, outflow is the most important element of the hydrological cycle and that is why it is important to determine it as accurately as possible by measuring and predicting. Therefore, the IntErO (Intensity of Erossion and Outflow) model based on the EPM (Erosion Potential Method) method was used for calculation of outflow and sediment yield in the S2-1 watershed of Shirindareh River Basin in the Northeast Iran with the area of 46.77 km2. According to the results, the predicted peak discharge was 101 m3 s-1 for the incidence of 100 years and the specific sediment yield was 267 m3 km-2 year-1. According to the previous studies and topographic characteristics, the river basin watershed belongs to the V category and has very weak erosion. The results of the present study and previous experiences of the other researchers revealed that the IntErO model can be used to estimate soil loss in the other regions similar to Shirindareh River Basin.

Estimation of Soil Losses and Reservoir Sedimentation: A Case Study in Tillouguite Sub-Basin (High Atlas - Morocco)

“…The method was based on the factors affecting erosion in a watershed, which are dependent on the temperature, the mean annual rainfall, the soil use, the geological properties, and some other factors in the watershed scale (Gholami et al, 2013;Khaledi Darvishan et al, 2017).…”

Ecological-Economic (Eco-Eco) Modelling in the Mountainous River Basins: Impact of Land Cover Changes on Soil Erosion

“…In Iran, the IntERO have been successfully used previously in the Regions of Chamgardalan; Kasilian (Amiri, 2010;Zia Abadi & Ahmadi, 2011;Yousefi et al, 2014) and some other sub-catchments of Shirindareh River basin Barovic et al, 2015;Gholami et al, 2016;Khaledi Darvishan et al, 2017).…”

Investigating the Hydrological Response and Nutrient Loss in Rainfed Lands in Northeast of Iran Using Rainfall Simulator

“…rainfall intensity and duration) (Arnaez, 2007;Assouline and Ben-Hur, 2006;El Kateb, 2013;Huang 2013). Study the factors that affect soil erosion is essential for soil and water conservation planning (Khaledi Darvishan et al, 2017;Spalevic et al, 2015Spalevic et al, , 2017aSpalevic et al, , 2017b. Many researches have been investigated the different aspects of soil erosion and some of them have been conducted to study the effect of rainfall intensity and/or slope gradient in different land uses on soil erosion.…”