Which risk increases for communities protected by artificial levees constructed on a meandering river?

💡 Explanation

When levees confine a meandering river, channel incision increases because the flow is constrained and the river's energy is focused, which increasing the likelihood suddenly and dramatically changing course onto adjacent lower-lying lands. Therefore, increased channel avulsion is the result, rather than other options depending on separate hydrological changes.

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• Which mechanism initiates the accumulation of plastic debris within subtropical oceanic gyres?
• Which mechanism increases landslide risk following intense rainfall near strike-slip fault zones?
• Which mechanism causes stream meandering in lowland river systems when cohesive sediment banks are present?
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