Survey of Relationship between Input Parameters and Calculated Suspended Sediment Discharge by Bagnold and Lane - Kalinske Method (Bazoft River, Iran)

In this paper, two formulas were chosen among those that estimate the suspended sediment discharge in rivers. These two formulas were Lane and Kalinske and Bagnold. For studying and knowing the correlation between input parameters and calculated suspended sediment discharge (CSSD), the SPSS17 software was used. Input parameters in these two formulas were as: water velocity, water discharge, suspended sediment concentration, hydraulic radius, and depth. By entering input parameters of these formulas into model, the results of both methods showed no significant correlation between CSSD and input parameters except water discharge in Lane and Kalinske and water velocity in Bagnold. Other input parameters have no good correlations with CSSD. Therefore, if Lane and Kalinske suspended sediment concentration and water discharge multiplied by each other and then equation powered by 0.5, the correlation between this equation and CSSD become better than supposing them individually with CSSD.