AH
A. Hoornick
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Stormwater runoff carries solids from streets to the storm sewer and waterbodies, causing sediment accumulation, reduced hydraulic capacity and water pollution. Urban stormwater management is essential, but limited information on sediment behavior and treatment methods hinders decision-making. This study investigated sediment characteristics in Amsterdam, revealing variations across the system, with finer material near the outfall. Settling velocities were lower at the end of the system and resuspension was more likely near the outfall. Monitoring sediment dynamics during rainfall events showed that high-intensity events can mobilize and transport solids. Deviations from standardized test protocols emphasize the need to consider sediment behavior when interpreting predictions. Recommendations include extensive sampling campaigns, collecting both sediment and water samples, refining sampling protocols and investigating resuspension and transportation processes.
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Stormwater runoff carries solids from streets to the storm sewer and waterbodies, causing sediment accumulation, reduced hydraulic capacity and water pollution. Urban stormwater management is essential, but limited information on sediment behavior and treatment methods hinders decision-making. This study investigated sediment characteristics in Amsterdam, revealing variations across the system, with finer material near the outfall. Settling velocities were lower at the end of the system and resuspension was more likely near the outfall. Monitoring sediment dynamics during rainfall events showed that high-intensity events can mobilize and transport solids. Deviations from standardized test protocols emphasize the need to consider sediment behavior when interpreting predictions. Recommendations include extensive sampling campaigns, collecting both sediment and water samples, refining sampling protocols and investigating resuspension and transportation processes.