Author(s): Gordon Gilja; Antonija Harasti
Linked Author(s): Gordon Gilja
Keywords: No Keywords
Abstract: The river confluence is a critical point of the river system where sediment from the tributary interacts with the hydraulics and morphology of the main river. Given that the two rivers differ in hydrological regimes, their interaction at the confluence produces complex morphodynamic responses, often resulting in deposition pattern that restricts river services, such as navigation. The aim of this research was to interpret the sedimentation pattern at the Drava River confluence into Danube using apparent bedload velocity as a measure of bedload sediment transport. The analysis was conducted for five field ADCP campaigns, targeted for low flows. The results show that Drava River transports bedload sediment in equilibrium when Danube is low, achieving sediment continuity. During high flows, Danube creates backwater effect, restricting bedload transport and inducing sedimentation.
Year: 2026