Mobed vs HEC-6 : a comparative study

Abstract

Models MOBED and HEC-6 were compared in this study. The comparison consisted of two steps. In step one, the major differences between the models were identified by examining the theoretical base of both models. In step two, the predictive capabilities of the models were compared by applying the models to an identical data set. The data set comes from the South Saskatchewan River reach below Gardiner Dan and relates to the degradation process that has taken place since the creation of Lake Diefenbaker. Comparison of model predictions with measurements reveals that MOBED has superior predictive capability than HEC-6 and use of HEC-6 as a predictive tool requires an extensive model calibration by the adjustment of Manning's 'n' and moveable bed width.