Which effect increases when vegetation is removed from a reinforced levee system along a major river?

💡 Explanation

When vegetation is removed, the soil loses root reinforcement, increasing pore water pressure during floods because hydraulic gradients increase shear stress along the levee slope causing destabilization. Therefore, slope instability risk heightened, rather than sediment deposition, soil drying, or increased crest stability which require vegetation or alternative slope protection.

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