Estimate the Sediment Load Entering the Left Side of Mosul Dam Lake Using Four Methods

Mosul Dam is one of the important dams in Iraq, it suffers like other dams from the problem of sediment accumulation in the lake. The daily surface runoff was estimated from seven main valleys in the left bank of the lake during the period (1/1/1988-31/8/2016) by applying SWAT model. The model performance was assessed using the statistical criteria R2, IOA, NSE and T-Test, the results were good. The averages annual surface runoff from the main valleys to the lake ranged between 3.3*106 m3 to 42.1*106 m3. The daily sediment load was estimated by four methods, Bagnold method was used in SWAT sediments transport simulation, while Yang, Toffaletti methods and Excess Shear Theory were programed by MATLAB, The performance of sediments transport simulation using Bagnlod, Yang and Excess Shear Theory methods was assessed using the same four statistical criteria and the results were good, The averages annual sediment load from the main valleys to the lake were (5.78*103 - 68.62*103), (1.49*104 - 42.13*104), (8.46*103 - 160.77*103) and (4.26*104 - 78.6*104) tons for Bagnold, Yang, Excess Shear Theory and Toffaletti methods, respectively. The valley Jardiam is the main supplier of sediments to the left side of the dam lake with 56%

A Computer Program for Estimating the Sediment Load Entering the Right Side of Mosul Dam Reservoir

Mosul Dam is one of the important dams in Iraq, it suffers like other dams from the problem of sediment accumulation in the reservoir. The daily surface runoff was estimated from three main valleys (Sweedy, Crnold, Alsalam) in the right bank of the reservoir during the period 1/1/1988 – 31/8/2016 by applying SWAT model. The model performance was assessed and the results were good. The daily sediment load was estimated by three methods, Bagnold method was adopted in SWAT, while Toffaletti and Einstein methods were programed by MATLAB. The averages annual sediment load from the main valleys to the reservoir were 1.08×103 – 27.32×103, 0.08×104 – 10.41×104 and 0.44×105 – 28.66×105 tons for Bagnold, Toffaletti and Einstein methods respectively. The valley Sweedy is the main supplier of sediments to the right side of the reservoir with 89%