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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

Water Quality on Lagoon

Jorge Balvoa, modified 2 Years ago.

Water Quality on Lagoon

Youngling Posts: 2 Join Date: 6/13/16 Recent Posts
Hi Everyone

I'm new to this, I'm modeling the water quality in a pond for my thesis, but now I've had a difficulty in MOD-FLOW. I do not receive the Comm file, much needed to attach it to the WAQ.

*** WARNING File will not be created - Inconsistent comm. file times
0 errors and 1 warnings
returning to main program from domain lo_gal4

Please someone help me, the characteristics of my model:


simulation star 02-06-2011
simulation stop 10-06-2011

time step 5 [min]


Processes= T°, Wind and Pollutants and tracers


Wind Drag Coef.

A=0,013, 0[m/s]; B=0,0675, 3[m/s]; C=0,085, 15[m/s]

Bottom Rougness


U=0,02 V=0,02

Background horizontal visc/diffu 0,001-0,001 [m2/s]
João Lencart e Silva, modified 2 Years ago.

RE: Water Quality on Lagoon

Padawan Posts: 70 Join Date: 3/30/11 Recent Posts
Can you please upload your mdf file so that we can help you?