ABSTRACT
In this study, depth and velocity measurements from a 2D hydraulic model were used to estimate bed shear stress and predict zones of erosion and deposition using a critical shear stress pertinent to the measured grain size. These estimates were compared to net elevation change computed by a landscape evolution model. Comparison of model outputs of erosion and deposition showed good visual agreement, particularly for erosion of outer banks of meanders and deposition on floodplains. These preliminary results demonstrate a representation of geomorphological activity can be gained through the re-use of hydraulic model outputs from existing flood studies and without recourse to sophisticated and computationally-expensive morphodynamic models, permitting high-resolution analysis over large spatial scales in an efficient manner.
