This work was supported by the Hermes Foundation represented by the Flemish Agency for Innovation & Entrepreneurship (VLAIO) (Belgium); the Dutch Organization for Scientific Research NWO (Netherlands) under grant no. 409-14-014 and co-financed by NSOB, Deltares, RebelGroup, ResetManagement, Twynstra Gudde, and Rijkswaterstaat); and the long-term research cooperation program between Rijkswaterstaat and the University of Groningen (Netherlands).