Abstract
In this paper, an empirical formula for prediction of the river's suspended and bed load is presented. Utilizing the data obtained from the Vanyar guaging station on Adji-chai river in Tabriz, Iran, and by means of regression analysis on the relationship between the suspended load and water discharge, two empirical equations with high regression coefficients have been given to calculate the river's suspended load for the wet and dry seasons. Using the dimensional analysis and the Buckingham II—theorem, a dimensionless semiempirical equation on the bed load has also been presented. Comparisons have been made between the last proposed equation with common ones on sediment hydraulics after their unified descriptions. The proposed semiempirical formula agress well with the measured data and could be regarded as optimal compared with other common formula.
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