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The Isola Serafini dam interrupts the Po River continuity creating a backwater zone that modifies river hydrodynamics for up to 30 km upstream. Lateral migration rates of meanders reduce downstream, and coarse-grained channel-bars are progressively drowned and reworked over time. The size of river bed sediment decreases downstream across the backwater zone. The size of river bedforms increases downstream across the backwater zone. Dam-induced backwater forced an up-flow shift of the gravel-sand transition.

No abstract