River hydraulics and morphology

MIKE 21C is one of the most comprehensive and well established tools for simulating river bed and channel plan form development caused by changes in the hydraulic regime. Simulated processes include alluvial resistance, bank erosion as well as scouring and shoaling caused by activities such as construction and dredging, and seasonal flow fluctuations.


  • MIKE 21C is a specialised tool for the serious river morphology modeller. 
  • It provides highly flexible, numerical solutions specifically tailored for sediment dynamics in river systems.
  • It encompasses mixed sediments ranging from silt and clay to sand and gravel.
  • MIKE 21C encapsulates DHI’s collective knowledge and experience in river sediment dynamics - embedded into our technology and made available to river engineers all over the world.


MIKE 21C is applied in complex river dynamics with a primary focus on sediment transport and river morphology. It is the ideal software for:

  • analysing flow fields and flood dynamics in rivers and adjacent floodplains
  • forecasting morphological changes in combination with planning and execution of river training works
  • reservoir sedimentation
  • designing protection schemes against bank erosion
  • evaluating measures to reduce or manage shoaling
  • analysing alignments and dimensions of navigation channels in order to minimise capital and maintenance dredging
  • predicting sedimentation of water intakes, outlets, locks and harbours
  • forecasting the impact of bridge, tunnel and pipeline crossings on river channel hydraulics and morphology
  • optimising restoration plans for habitat environment in channel floodplain systems
  • designing monitoring networks based on morphological forecasting