Articles | Volume 367
Proc. IAHS, 367, 349–356, 2015
Proc. IAHS, 367, 349–356, 2015

  03 Mar 2015

03 Mar 2015

Erosion modelling towards, and sediment transport modelling in unnavigable watercourses in Flanders, Belgium

B. Ferket1, M. Van De Broek2, T. Van Hoestenberghe1, J. Degerickx2, R. De Sutter1, G. Govers2, N. Dezillie3, and P. Deproost4 B. Ferket et al.
  • 1Antea Group, Roderveldlaan 1, 2600 Berchem, Belgium
  • 2KULeuven, Division of Geography, Celestijnenlaan 200e, 3001 Leuven, Belgium
  • 3Flemish Environmental Agency (VMM), Koning Albert II-laan 20 bus 16, 1000 Brussels, Belgium
  • 4Flemish Department of Environment, Nature and Energy, Division of Land and Soil Protection, Subsoil and Natural Resources, K. Albert II-laan 20 bus 16, 1000 Brussels, Belgium

Keywords: Sediment transport, erosion, sedimentation, hydrological model, hydraulic model, erosion control measures

Abstract. Antea Group and KULeuven were awarded a project in Flanders to identify the regions exporting high sediment loads to unnavigable watercourses and the sedimentation zones within them. Two types of models are applied: hydrological sediment export models (SEM) and hydraulic sediment transport models (STM). The influence of erosion control measures on sediment export as well as river engineering measures needs to be taken into account. A concept will be developed to connect the SEM and STM, enabling the sediment to be routed from upstream to the sedimentation zones. Results of the study will be used by the Flemish government to plan erosion control measures, estimate future sedimentation volumes, steer sedimentation and optimize river engineering and dredging works. Finally, model results could also be used to obtain better insights to the re-suspension risks of contaminated sediment in watercourses.