Which primary effect follows the artificial lengthening or heightening of river levees to manage flood risk?

💡 Explanation

When levees are modified in this manner, the river's energy is confined to the channel because widening the levee. Consequently, stream power increases downstream because that kinetic energy isn’t applied to overbank flow. Concentrated stream power therefore occurs downstream, rather than upstream aggradation, increased deposition, or enhanced recharge, which usually happen near the overbank flow zones or natural areas.

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