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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


  • .bct

    Problems on the creation of the .bct
    0 Subcategories 3 Threads
  • Choose the best Biodegradable and Compostable Bags in Udaipur, India

    Easy Flux bags is outstanding amongst other Biodegradable and compostable Plastic Bags Manufacturers in India. We are driving <a href=” http://easy-flux.in/carry-bags/”> best Biodegradable Carry Bags in India</a>. We are delivering the bags with best raw material using natural sources. If you are searching for the best <a href=” http://easy-flux.in/bag-on-rolls/”> Biodegradable and compostable Pouches in India</a>, then your search ends here with us. We are leading best Compostable Bags Manufacturers in India, material according to the Government has on petroleum-based plastic for more than 50 microns. Easy Flux bags are produced using cornstarch and are 100% compostable and biodegradable which has demonstrated to be the best option of the typical plastic which doesn't drains even in 300 years. We are offering with <a href=” http://easy-flux.in/garbage-bags/”> Best Government Approved Garbage Bags in India</a>. We promote the eco-accommodating bags against the utilization of plastic bags.
    0 Subcategories 0 Threads
  • Compilation on Linux

    0 Subcategories 63 Threads
  • Compilation on Windows

    0 Subcategories 82 Threads
  • iOS Compile Problem

    Hi everyone, I am trying to compile any version of Delft3D in iOS 10.15.6 (19G2021) but every single time when I run the command "make" gives me this error: Generating version number in the ./deltares_common_version.F90 Done, new version number is: 67540M /bin/sh ../../../../../libtool --tag=FC --mode=compile mpif90 -DHAVE_CONFIG_H -I. -I../../../../.. -DWITH_DELFTONLINE -g -O2 -ffree-line-length-none -cpp -c -o deltares_common_version.lo deltares_common_version.F90 libtool: compile: mpif90 -DHAVE_CONFIG_H -I. -I../../../../.. -DWITH_DELFTONLINE -g -O2 -ffree-line-length-none -cpp -c deltares_common_version.F90 -fno-common -o .libs/deltares_common_version.o libtool: compile: mpif90 -DHAVE_CONFIG_H -I. -I../../../../.. -DWITH_DELFTONLINE -g -O2 -ffree-line-length-none -cpp -c deltares_common_version.F90 -o deltares_common_version.o >/dev/null 2>&1 /bin/sh ../../../../../libtool --tag=FC --mode=compile mpif90 -DWITH_DELFTONLINE -g -O2 -ffree-line-length-none -cpp -c -o multi_file_io.lo multi_file_io.f90 libtool: compile: mpif90 -DWITH_DELFTONLINE -g -O2 -ffree-line-length-none -cpp -c multi_file_io.f90 -fno-common -o .libs/multi_file_io.o multi_file_io.f90:79:43: 77 | res = CUTIL_MF_READ(fptr,strout,savepos) ! pass the starting position of read back to the caller | 2 78 | else 79 | res = CUTIL_MF_READ(fptr,strout,lastpos) ! disregard starting position of read | 1 Error: Type mismatch between actual argument at (1) and actual argument at (2) (INTEGER(4)/INTEGER(8)). make[8]: *** [multi_file_io.lo] Error 1 make[7]: *** [all-recursive] Error 1 make[6]: *** [all] Error 2 make[5]: *** [all-recursive] Error 1 make[4]: *** [all-recursive] Error 1 make[3]: *** [all-recursive] Error 1 make[2]: *** [all-recursive] Error 1 make[1]: *** [all-recursive] Error 1 make: *** [all] Error 2 Can anyone give me a light how do I solve this problem? Thanks! LP
    0 Subcategories 0 Threads
  • Oceanic island

    0 Subcategories 1 Thread
  • Pre & Post processing

    7 Subcategories 212 Threads
  • refine grid

    Hello: I want to refine grid like this(hand drawing is roughe): [img]https://lh3.googleusercontent.com/xh6SjhjAQecoNWCsziTtoMMAAXocpUGAp5_Lic9NZ4fC99XEdjm5aTXh4BvVO4i0bH6Wl3DqSOFQeOTh81lbGHnJeYoro7xEH0tKALhkFmKNoPT2oHV9js7_osgd4Go0xL3Gt2zzpNTavCTaz_tXdyKttCpL7oFyOYiR4BDzqOWIBZ5Lt5MgPHlB7YahXNJHH2PZ-MmwsaOVfIrg_gcIWNa71RfRKbpoD4z2is2TgcwCdQ6aQySsKS2dZyPjGg9RFCSX1ctgDUXOJBTLQuMITVbIpbypsJqtMWQrC1lIK_jYLZ9S_J3hwGr8aiqDSRvn23YZu4UmyS8S8nWhcbTQIFGCXtDw9c9euo1-1JJ6Z3J0tzYtrtLZMHjX3KKLO4dOKz4czsgoto4ZBg7LBRRQ4LmU7hzam1eqDVpEje9cPGQUADUvl-rSRJTswjYOQ5XdZGQVTIJRrVITHs8YIPgBzFP5MyOIF2lfApU6738VGXalsIS9YI6F2xcvwaiCn0QwpPbmEYwU1UC1bOLoARgtL0u1-tCBNJqRTk0krRXFClYDPjIjiGX1JkLTJ0VAAm2JANudl7J8ikrHiBxAriLrsKKzv2Fo3d3O6wDpZ3vUgzeVyvee=w592-h400-no[/img] I have tried to paste two grids but does not work. I also tried to draw an irregular grid,but it could not be saved into .grd [img]https://lh3.googleusercontent.com/LZoRzBoP7r6qg9SLILB3simzXgGBaECI9ezzujKvcd9SWyZ4jupv7qllZT8Mo1MoHdkqA-8PMXBlIAp-asoM4Yu1uLkr5YJEYaVhk7vMoBbh92r_yQX2OQYyKJgEusdP-6s7PAbS6uvtkhbWO1p9iyJOceeikUOG6rwU7XTY8kWranOdAk92T0b0C18E-l8XkjDKBmRs6UrgqTiv14hl-iu9_ekl3fB8MKOvWYsaE0CP9KeEIP7UuXyRolMEs817H9nyBseHfELo1Ko2l7HhAsffm9jvxzC3bQXgB3LvlzK4dmt9DiqchrWEE2vWFQzV2GXfNnjd-Btokc-MgA7bSATuCxXVZ_tVCKo-tJf5PAGMhupB-HJTrlhZpE1xoVuCWUsSP2sqlFYA44Gf5MeXpEKsUWayygYQf_Xi8wvCcOovRLBXY2McSvfFNxMhE3dg0JfJq685BKpFt1HROG8uHmIdT_wWFa_5Bb992pCq2SL-yXiZn_kdatTlJs5rsTgnNLpycFOmypCKSMsxuDjbOrGzRa5Kps9K_oJ_1snm9A8jJ0tnILt3H7dZfujih2kcE4DVKTdhigIi8sr8500avia1vBCLkQdbOOiswIvMJcGqI87x=w762-h730-no[/img] Will you have another way or point out my mistakes,please. thanks
    0 Subcategories 2 Threads
  • shild18

    the number of the layers is 100 at most. when i make the number of the layers exceed 100, such as 150, it will apears error, so how can i solve it, the following is the error: ******************************************************************************** *** *** Deltares, FLOW2D3D Version, Nov 6 2018, 12:53:18 *** built from : https://svn.oss.deltares.nl/repos/delft3d/branches/releases/7545 *** *** runid : JLR_YZR_steady *** date,time : 2019-08-31, 23:08:53 *** ******************************************************************************** *** ERROR Number of layers too large. Contact Deltares *** End of tdatom for model: JLR_YZR_steady *** *** 2019-08-31 23:08:53
    0 Subcategories 0 Threads
  • Teodósio Nzualo

    Dear, My name is Teodósio Nzualo and i'm a pos-doc research in Federal University of Rio de Janeiro. I user the Delft3D since 2010 in free version. In March 1, 2016 i received from Deltares the last License which i'm using. However in March 18, my QUICKPLOT left to work. The mensage that i received is "Error in mclFreeStackTrace". What could it be? Is it a error of compiler R2013? and how to resolve it? I'm using the Delft3D in version 1 - MCR_R2013b_win32_installer 2 - vcredist_x86 (2010 SP1) 3 - delft3d_tutorial_x86 4 - delft3d_binaries_x86 5 - DS_Flex Specifications of my PC Processor: Intel(R)Core(TM) i7 CPU 2.93 GHz Memory RAM: 6.00 GB System type: 64-bit Operating System, x64-based processor And i'm using a Windows 10 Thanks for your attention. Teodósio Nzualo
    0 Subcategories 0 Threads
  • Version and Compiling

    I am trying to use Delft3d version 4.01.01.rc.03. I want to know, for this version of Delft3d, which flow tag should I use? Similarly, if I want to use Delft3d version 4.02.02, which flow tag version should I use. And what is the flow tag version that i should use for Delft3d version 4.00.02? I am trying to compile the source code since last week but there is always some errors and problems. I am using Microsoft visual studio 2010 and intel parallel studio XE 2015. Is there any way i can run Delft3d for simulation without compiling the source code? I would be very much thankful for your support.
    0 Subcategories 1 Thread