Which consequence results when levee armoring fails under erosion?

💡 Explanation

Accelerated downstream sedimentation happens, because levee armoring failure activates increased bank erosion during flood events caused by hydraulic action. A larger sediment load is transported downstream, therefore the floodplain sedimentation rate increases, rather than channel bed transport, impacting channel morphology changes.

• Which outcome accelerates loess deposit alteration through biogenic activity?
• Which outcome is enhanced due to flux melting?
• Which outcome increases substantially when agricultural irrigation causes excessive drawdown in a karst aquifer?
• On valley flanks in mountainous areas, which erosional outcome results from intense freeze-thaw cycles?
• Which risk increases when rapid groundwater extraction lowers the water table within a soluble bedrock formation containing existing sinkholes?
• Which outcome results when glacial outwash undergoes sorting?