Suspended sediment formulae evaluation, using field evidence from soolegan river

World Applied Sciences Journal

Volume 4 - Number 19

Article Type: ---- Unspecified ----

Predictions of suspended sediment load for Soolegan River in Iran using selected empirical equations were made based on 355 sets of data. Data covers flow discharges from 3.11 m 3/s to 43.81 m 3/s, flow velocities from 0.22 m/s to 1.03 m/s, flow depths from 0.5 to 1.03 m. the equations used in the evaluation are Einstein, Bagnold, Toffaleti, Brooks, Chang-Simons-Richardson and Lane-Kalinske. The selection was based on the purpose of this paper, illustrating the performance of six suspended sediment formulas in Soolegan River and in addition the integrated formulae were also evaluated. Graphical comparisons of the calculated and measured transport rates are shown. The accuracy and reliability of these formulas are verified. The results of the evaluations showed that Brooks had the best estimations while the same results for integrated formulae showed that Lane-Kalinske and Bagnold estimated the suspended sediment discharges better than integrated and nonintegrated ones. © IDOSI Publications, 2012.