Author(s)

M. Najarchi

Abstract

Koohsefid River is located in the southwest of Mahalat City in the Markazi Province of Iran. [HEC-2] and [HEC-6] computer models were used for the investigation of flood events, water surface profiles and erosion sedimentation with different return periods for Koosefid River respectively. Based on the results obtained from [HEC-2] a high correlation is shown with data observing by floodmark. Erosion and sedimentation in the river with [HEC-6] model uses different formulas for such prediction. To verify the accuracy of these formulas, measurement of sediment in hydrometry station was also performed. Toffaleti’s formula using fall velocity introduced by the Interagency Committee on Water Resources (I.C.W.R) approach shows the highest correlations with measured values. Keywords: HEC-2, HEC-6, sedimentation, river.

Keywords

HEC-2, HEC-6, sedimentation, river