Data was generated for 98 debris flow erosion experiments in a 5.4 m long flume with an erodible loosely packed sediment bed. In the 98 experiments the bed conditions were kept constant, but the composition of the debris flow changed. Volume, water content, gravel content and clay content were varied. The paper contains all information on procedures, settings, sensors and data analyses. The data in this supplement contains the DEMs of the erodible bed, the data of the sensors in the flume and an overview of all experiments.
