Modelling coarse-sediment propagation following gravel augmentation: The case of the Rhône River at Péage-de-Roussillon (France)

Over the last two centuries, rivers worldwide have been affected by human interventions, including dams, river training, and gravel mining. Such actions often involved fragmentation sediment starvation. In this regard, augmentation is an increasingly common restoration practice for mitigating starvation in gravel-bed rivers. However, uncertainties remain on how to better implement design such operations. This case Rhône River at Péage-de-Roussillon, France, where 6885 m3 of gravels were augmented 2017. work raised some concerns from managers about potential threat posed a downstream reservoir arrival sediment, explains why they interested timeframe propagation, travel distances velocities sediment. To answer these questions, we propose modelling framework simulating long-term propagation pulse with being based combination particle tracking data collected field bedload transport capacity estimates. workflow allowed us successfully model along study reach, provided useful information wave would behave over long term. We believe that methodology proposed has much exploring investigating kinematics