Which risk increases along riverbanks composed of unconsolidated silty alluvial deposits?

💡 Explanation

When silty alluvial riverbanks are unconsolidated, reduced sediment cohesion leads to an increase in lateral riverbank erosion due to hydraulic action during floods. Therefore enhanced erosion occurs along the banks, rather than seismic amplification, chemical weathering changes, or reduced recharge, which require altered underlying geological structures or saturation conditions.

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