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intro story DELWAQ


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


Message Boards

Delft Dashboard Could not retrieve

bhumi warih geohydromatics, modified 7 Months ago.

Delft Dashboard Could not retrieve

Youngling Posts: 1 Join Date: 1/29/19 Recent Posts

Dear fellow delft dashboard user,

I have tried to create tidal boundary using delft-dashboard on this week but it couldn't. The command prompt showed that I cannot retrieve from the server.

Is anybody have the same problem?

What can cause this problem to appear? Is it from the server? Can I use the delft dashboard offline?

Best regards,


Giles Fearon, modified 7 Months ago.

RE: Delft Dashboard Could not retrieve

Youngling Posts: 2 Join Date: 11/28/17 Recent Posts

Hi, I am having the exact same issue. Looks to me like the Deltares server is down. Hopefully someone can assist with this soon!

Kapil Chandrakant Varne, modified 7 Months ago.

RE: Delft Dashboard Could not retrieve

Youngling Posts: 7 Join Date: 3/23/18 Recent Posts

Same issue here too, looks like a server problem to me. Can someone please clarify? How long will it take?

Fernando Barreto, modified 7 Months ago.

RE: Delft Dashboard Could not retrieve

Padawan Posts: 74 Join Date: 6/21/12 Recent Posts

I am also having the same issue. Anyone??