Which outcome occurs when a substantial section of a naturally formed levee is removed along a major river?

💡 Explanation

When a section of a levee is removed, excess water and sediment spread onto the floodplain because the previous barrier is gone, facilitating overland flow. Therefore floodplain sedimentation increases, rather than altered channel sinuosity, point bar formation alteration, or increased external erosion, which develop due to other factors.

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