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DELWAQ is the engine of the D-Water Quality and D-Ecology programmes of the Delft3D suite. It is based on a rich library from which relevant substances and processes can be selected to quickly put water and sediment quality models together.

The processes library covers many aspects of water quality and ecology, from basic tracers, dissolved oxygen, nutrients, organic matter, inorganic suspended matter, heavy metals, bacteria and organic micro-pollutants, to complex algae and macrophyte dynamics. High performance solvers enable the simulation of long periods, often required to capture the full cycles of the processes being modelled.

The finite volume approach underlying DELWAQ allows it to be coupled to both the structured grid hydrodynamics of the current Delft3D-FLOW engine and the upcoming D-Flow Flexible Mesh engine (1D-2D-3D) of the Delft3D Flexible Mesh Suite (or even other models such as TELEMAC).

'DELWAQ in open source' is our invitation to all leading experts to collaborate in further development and research in the field of water quality, ecology and morphology using Delft3D. Feel free to post your DELWAQ related questions or comments in this dedicated forum space. If you are new to DELWAQ, the tutorial (in the user manual) is a good place to start. A list of DELWAQ related publications is available here.




Sub groups
D-Flow Flexible Mesh

Cohesive sediments & muddy systems



  • SJ
    Song JingWei replied 5 Years ago.

    How to define initial conditions of BLUE GREENS

    5 Posts 2978 Views 1 Answer
  • Michelle Jeuken replied 2 Years ago.

    Flow & Wave run COM file coupling error

    5 Posts 4109 Views 1 Answer
  • AM
    Ana Mend replied 5 Years ago.

    TELEMAC-Delft3D - Coupling

    7 Posts 6650 Views 1 Answer
  • Ben Williams replied 5 Years ago.

    Reading coupling files

    3 Posts 2806 Views
  • Javier F Bárcena replied 5 Years ago.

    Water quality modelling from MPI simulation and multiple COM files

    9 Posts 7021 Views
  • Christophe Thiange, modified 6 Years ago.

    Delwaq publications

    1 Post 1650 Views
  • Fermin Avila replied 6 Years ago.

    DELWAQ OSS Deadline?

    4 Posts 2967 Views 1 Answer
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