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wflow User Day 2021

wflow User Day 2021
17 Nov

wflow User Day 2021

Registration is closed

17 Nov 2021 09:00 - 13:00 (CET)
User Days

€ Free
Room : MS Teams

wflow is Deltares’ own distributed hydrology modelling software which maximizes the use of earth observation data and calculates all hydrological fluxes at any given location and time step, using physical parameters and meteorological input data.

The 2021 user day is for hydrological modellers who want to learn about wflow as well as for existing users. This online event will cover the latest developments and features and the practical applications realized in the last year. 

The wflow framework is an open source framework, newly developed in the Julia language. This structure allows users to build their own models from (open) global data and combine different modules. Major processes that can be included are snow and glacier melt, interception, soil moisture, runoff generating processes, sediment transport and river flow. This flexible modelling framework is being used around the world to simulate river flows for flood forecasting, flood risk analysis, water allocation modelling and water quality analysis. Its soil moisture module is providing valuable input for drought analysis and slope stability modelling.



08:50 – 09:00Arrival - informal chats
09:00 – 09:10Welcome and registrationBobby Russell (Deltares)
09:10 – 09:30Ice Breaker sessionBobby Russell (Deltares)
09:30 – 10:00IntroductionBobby Russell (Deltares)
10:00 – 10:30Overview of wflow developments in Julia and live demoWillem van Verseveld and Martijn Visser (Deltares)
10:30 – 10:40BREAK
10:40 – 11:10Large-sample based evaluation of the spatial
discretization of the wflow_sbm model
Jerom Aerts (TU Delft)
11:10 – 11:40Catchment erosion modelling and reservoir sedimentation in the Tenryuu basin (Japan) with wflow sedimentHélène Boisgontier (Deltares)
11:40 – 12:10TKI3 results: Combining (semi-)distributed hydrology in wflow with Delft3D FM Suite 1D2DSam de Roover (HydroLogic)
12:10 – 12:40Effects of the groundwater conceptualization in PCR-GLOBWB 2 and wflow. A test case for the Rhine-Meuse catchmentIgnacio Farias-Gutierrez (Utrecht University)
12:40 – 13:00Closing remarksBobby Russell (Deltares)



Please sign in (top right corner) using your MyDeltares account. 

If you already have either a DSD or OSS account and no MyDeltares account yet, then click on the link Forgot Password? to setup your MyDeltares account including a new password. Once you have completed the password reset you can login. 

After the MyDeltares registration or signing in, it will be possible for you to register for individual 2021 events, get a personal overview (My schedule), make changes in your schedule, profile etc. 

You will receive an email confirmation from Microsoft Teams (MS Teams) with further instructions.

If you come across any problems with the registration, please contact our team at



Please check in early to test your audio and video. We will open the session at 08:50 CET (Delft time, UTC+1), 10 minutes before the start of the session.





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Registration info - DSD-INT


1. Sign in (top right corner) using your MyDeltares account or register first if you don’t have an account yet.

Note: if you already have a DSD or OSS account but not yet a MyDeltares account, simply click Forgot Password? to initiate the setup of your MyDeltares account. After completing the password reset process, you'll be able to log in seamlessly.

2. Click <ADD TO CART> button for your session of interest.

3. Go to your “Shopping cart” (top right corner) to finalise your registration.

If you come across any problems with the registration, please contact our team at