Predicting & Analyzing Discharge and Sediment of Sore Catchment, Sub Basin Using Saturation Excess Model, Western Ethiopia

In Ethiopia’s Baro-Akobo Basin, soil erosion, land degradation, and soil loss are significant issues. The prediction of discharge and sediment in the Sore watershed was investigated using the parameter efficient semi-distributed watershed model (PED). This study’s goal was to analysis and predicts the sediment and discharge from the Sore catchment in the Baro-Akobo Sub basin in western Ethiopia. Sore (1665.5 Km2) in the Baro-Akobo River Basin was the chosen watershed. Model calibration and validation were carried out using the stream flow and sediment data for Sore watershed from 2005-2013 and 2014-2018 from Ministry of Water and Electricty. PED-W’s daily time step scale model efficiency for the calibration of discharge and sediment was determined to be NSE= 0.40 and NSE= 0.44 for the Sore watershed, respectively. In a similar manner, NSE values for PED-W’s discharge and sediment during the validation period were determined to be NSE= 0.22 and NSE= -0.82 for the Sore watershed. Between the observed and simulated discharge and sediment at daily time steps, there was a range of unsatisfactory to satisfactory agreement as a consequence. The performance of the models on the monthly time step scale also varied and was superior to the daily time step scale. PED-W model was shown to be less accurate than SWAT model for predicting stream flow and sediment yield, according to the overall model performance. However, the PED model used for calibration and validation at monthly time steps was identical to the SWAT model previously used.