Multipurpose Use of Artificial Channel Networks for Flood Risk Reduction: The Case of the Waterway Padova–Venice (Italy)

摘要: Many rivers are increasingly threatened by extreme floods, and effective strategies for flood risk mitigation difficult to pursue, especially in highly urbanized areas. A flexible multipurpose use of the complex networks artificial channels that typically cross these regions can play a role mitigation. relevant example concerns possible completion waterway from Padova Venice Lagoon, North-Eastern Italy. Once completed, boost shipping (which is considerably more climate environment friendly than road transport), lead urban re-composition territory and, serving as diversion canal Brenta River, reduce hydraulic hazard well. The goal present work was assess this last point. To purpose, 2DEF hydrodynamic model used reproduce Brenta–Bacchiglione river network. This network includes reaches, canals, bed sills, pump stations, control structures assures proper operation system case events. mixed Eulerian–Lagrangian, semi-implicit formulation provided accurate computationally efficient results subcritical regimes. showed divert significant part floodwaters toward thus reducing River downstream Padova. benefits also extend Bacchiglione whose be diverted into through an existing canal; indeed, withdrawal produces drawdown profile allows diverting larger flow rates Finally, conveying sediment-laden within could contribute counteract generalized erosion affecting lagoon.