Riverbed dynamic evolution following landslide dam: a case study

The landslide phenomenon interfering with river processes is a complex topic and its interpretation through models is still being studied and tested. In this work, the authors describe the investigations carried out on a single-thread gravel-bed reach of the Noce River in Basilicata (Italy), which underwent a progressive morphodynamic change caused by a landslide, mobilized from the right-side slope of the basin, in July 2007. Riverbed dynamics and morphological alterations were analysed by field observations, topographic surveys, and numerical modelling. These methodologies allowed us to provide information on the future morphological variations in the river reach, useful also to the choice of protection interventions of vulnerable works, and civil infrastructures subject to erosion phenomena.