ir. A. Bomers MSc (Anouk)

PhD Candidate on historic flood modelling


Sea Level
Water Level


Dutch water policy is currently changing towards a risk based approach, which leads to a significant increase of safety levels expressed in recurrence times in areas where consequences of a flood are large (1:10,000 and higher). The traditional flood frequency method (based on extrapolation of historical records of only 110 years) yields large uncertainties in predicting design discharges corresponding to extremely large recurrence times. Therefore, the alternative method GRADE was developed. Validation must be performed to evaluate if GRADE is indeed capable of predicting design discharges for the Dutch river system with a smaller uncertainty interval than the traditional method. Reconstructions of historic floods will provide useful knowledge that can be used for this validation process. Therefore, Anouk will focus during her PhD-project on the parametrization and translation of hydraulic characteristics of the river and floodplains of the various historical years and use this as input for the hydraulic models to reconstruct past flood magnitudes.


Recent Articles
van der Meulen, B., Deggeller, T. S., Bomers, A., Cohen, K. M., & Middelkoop, H. (2018). The historical river: morphology of the Rhine before river normalization. 44-45. Abstract from NCR Days 2018, Delft, Netherlands.
Bomers, A., Schielen, R. M. J., & Hulscher, S. J. M. H. (2017). Benchmark study of numerical model grids to study historic floods of the river Rhine. 1-3. Abstract from 4th International Symposium on Shallow Flows, ISSF 2017, Eindhoven, Netherlands.
Cohen, K. M., Schielen, R. M. J., van der Meulen, B., Bomers, A., Hulscher, S. J. M. H., & Middelkoop, H. (2016). Floods of the past, design of tomorrow - project introduction. 1-1. Abstract from EX-AQUA 2016 Palaeohydological Extreme Events workshop, Padova, Italy.
Bomers, A., Aguilar Lopez, J. P., Warmink, J. J., & Hulscher, S. J. M. H. (2016). Modelling erosion development during wave overtopping of an asphalt. In M. Lang, F. Klijn, & P. Samuels (Eds.), FLOODrisk 2016 - 3rd European Conference on Flood Risk Management 17-21 October 2016, Lyon, France (pp. 1-8). (3rd European Conference on Flood Risk Management (FLOODrisk 2016); Vol. 7). Lyone, France: E3S Web of Conferences. DOI: 10.1051/e3sconf/20160703003
Schielen, R. M. J., Bomers, A., & Kroekenstoel, D. (2014). Unraveling the contribution of wind, sea level and discharge to desing water levels in the Dutch delta. In A. J. Schleiss, G. De Cesare, M. J. Franca, & M. Pfister (Eds.), River Flow 2014 (pp. 1729-1736). Londen: Taylor & Francis.

UT Research Information System


Courses Bachelor Civil Engineering:

  • Design project Civil Engineering, Bsc level, 2016-now

Courses Master Civil Engineering and Management:

  • Design Project Water, MSc level, 7.5 EC, 2015-now
    Responsible for modelling part of the course
  • River Dynamics, Msc level, 7.5 EC, 2017-now
    Supervising the tutorials

Supervision of Bsc graduation  project:

  • R. de Boer, 2016: The effect of retaining water extremes in nature areas on water policy, Waterboard Reest & Wieden
  • J. Willink, 2017: Procces change analysis Waterboard Rijn & IJssel

Affiliated Study Programmes



In the press

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Contact Details

Visiting Address

University of Twente
Faculty of Engineering Technology
Horst - Ring (building no. 21), room W 207
De Horst 2
7522LW  Enschede
The Netherlands

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Mailing Address

University of Twente
Faculty of Engineering Technology
Horst - Ring  W 207
P.O. Box 217
7500 AE Enschede
The Netherlands