Which primary risk increases when an artificial levee system is constructed on a highly sinuous river?

💡 Explanation

When a river is channelized by artificial levees, the flow velocity increases due to the shorter, straighter path because floodplain storage is reduced, leading to greater hydraulic energy concentrated in the channel. Therefore, the downstream riverbed incision is accelerated, rather than biodiversity, salinity, or barrier erosion, which are triggered by different forcing mechanisms.

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