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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



  • Christophe Thiange replied 3 Years ago.

    inconsistency in DIMENSIONAL ANALYSIS

    2 Posts 2440 Views
  • FK
    Frank Kleissen replied 3 Years ago.

    Disk write frequency in delft-part

    2 Posts 1787 Views 1 Answer
  • Michelle Jeuken replied 3 Years ago.

    Vegetation decomposition

    5 Posts 4754 Views 0 Answers
  • FK
    Frank Kleissen replied 3 Years ago.

    Delft3D PART(oil) issue with sticking (beaching)

    2 Posts 3009 Views 1 Answer
  • GA
    Gabriela Alvarez replied 3 Years ago.

    Algae phenotypes concentration

    8 Posts 5117 Views
  • Christophe Thiange replied 3 Years ago.

    Modeling nutrient processes at sediment-water interface

    2 Posts 3200 Views 1 Answer
  • NN
    Nill Ng replied 3 Years ago.

    Time and Depth Varying Boundary Condition and others...

    25 Posts 15518 Views 7 Answers
  • GG
    gustavo gomes replied 3 Years ago.

    D-WAQ PART - Changing the number of threads

    3 Posts 2487 Views 1 Answer
  • DK
    Danker Kolijn replied 3 Years ago.

    Implementing bottom growth / algae cover

    3 Posts 3807 Views
  • Christophe Thiange replied 3 Years ago.

    Coastal model Dissolved Oxygen (DO) boundary & computational issue

    2 Posts 2683 Views
  • Rudy Schueder replied 3 Years ago.

    NaN in RHS segment after editing pripro.f in waq kernel

    3 Posts 2737 Views 1 Answer
  • FF
    Fabricio Fiengo, modified 3 Years ago.

    S1 and S2 outputs

    1 Post 1594 Views 0 Answers
  • FF
    Fabricio Fiengo replied 3 Years ago.

    Problems with slow adsorption-desorption outputs in S1

    5 Posts 3061 Views 1 Answer
  • AM
    Arjen Markus replied 3 Years ago.

    How to view parameter (*.par) file?

    4 Posts 4138 Views
  • AM
    Arjen Markus replied 4 Years ago.

    plct crashes during edition

    4 Posts 2441 Views 0 Answers
  • AM
    Arjen Markus replied 4 Years ago.

    Coupling problems using Z-Layers

    22 Posts 13341 Views 2 Answers
  • WS
    Willem Stolte, modified 4 Years ago.

    R tools for postprocessing?

    1 Post 1739 Views
  • Christophe Thiange replied 4 Years ago.

    error in output of some substances

    2 Posts 2253 Views
  • LH
    Li Haijun replied 4 Years ago.

    MPI - Running parallel on windows

    5 Posts 3319 Views 1 Answer
  • NJ
    Nick Jewitt replied 4 Years ago.

    WAQ Coupling

    5 Posts 3003 Views 2 Answers
Showing 121 to 140 of 207 entries.