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Why does water released from Danube River reservoirs erode downstream banks?
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Danube River
The Danube River basin and its drainage network.
Water released from Danube River reservoirs erodes downstream banks because the impounded water loses its silt load while held in the reservoir. As a result, the water flowing out of the dam is relatively silt-free. This "hungry" water, lacking its natural sediment load, compensates by picking up material from the riverbed and banks farther downstream, leading to increased erosion.1