Which outcome occurs when a river levee is rapidly saturated during an extreme flood event exceeding design capacity?

💡 Explanation

When a levee saturates rapidly, the effective stress decreases because pore water pressure supports the soil matrix, leading to liquefaction where the soil loses shear strength, causing subsidence. Therefore levee subsidence results, rather than stability, erosion control, or consolidation, which require drained conditions or different soil properties.

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