Which consequence results when prolonged river sediment deposition exceeds compaction?

💡 Explanation

Excessive unchecked sediment deposition leads to increased pore water pressure inside the emergent levees. This reduces the shear strength through effective stress reduction, therefore levee failure becomes more likely rather than channel erosion.

• Which event rapidly alters river drainage basins when a stratovolcano erupts tephra?
• Which feature forms when a lowland river bypasses a meander?
• Which erosion dominates when seasonal wave energy intensifies at coastal headlands?
• Which risk escalates when human-constructed levees significantly constrain a deltaic river's natural floodplain?
• Which outcome on leeward dune slopes results from turbulent air?
• Which geologic configuration develops where carbonic acid promotes weathering?