"Flood polders are used to improve water retention and thus attenuate flood peaks in the course of small-scale and average flood events. Breach formation processes and its influencing factors are still subject to a number of uncertainties. In that context, physical model tests of dike breaches were performed in the hydraulic laboratory in Aachen to quantify the targeted filling of flood polders." This is part of the Open Educational Resources Initiative by the Faculty of Civil Engineering of the RWTH Aachen University.