1. Katholieke Universiteit Leuven (KULeuven), Faculty of Engineering, Department of Civil Engineering, Hydraulics Laboratory, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium, (E-mail: raf.bouteligier@bwk.kuleuven.ac.be)
2. Delft University of Technology (TUDelft), Faculty of Civil Engineering and Geosciences, Section of Sanitary Engineering, P.O. Box 5048, NL-2600 GA Delft, The Netherlands, (E-mail:c.m.l.flamink@citg.tudelft.nl)
3. Royal Haskoning, Barbarossastraat 35, NL-6522 DK Nijmegen, The Netherlands, (E-mail: j.langeveld@royalhaskoning.com)