Which risk increases when human-constructed artificial levees constrict floodplain widening during extreme flooding events?

💡 Explanation

When levees constrict a floodplain, the flow becomes more concentrated during flooding events leading to increased stream power because the water volume and velocity are elevated. Therefore, increased erosion results, rather than decreased sediment deposition, lower groundwater recharge, or reduced nutrient cycling which contradict intensified flow dynamics.

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