Which outcome occurs when seasonal flooding delivers excess sediment onto an alluvial plain?

💡 Explanation

Aggradation increases riverbed elevation because excess sediment deposition outpaces erosion. Graded rivers trend toward equilibrium via sedimentation. Therefore, the riverbed rises rather than soil degrading or riparian erosion increasing under high silt flow conditions.

• Which feedback consequence results when melting accelerates within a cirque?
• Which mechanism contributes when variations occur with the Walker circulation's wind patterns in the tropical Pacific region?
• Which geological effect happens with increased bioturbation activity?
• Which effect occurs in coastal aquifers when excessive groundwater extraction lowers the water table?
• Which risk significantly increases for infrastructure built across slopes undergoing active solifluction?
• Prolonged rainfall increases stress on river levees, causing which failure mode when shear strength decreases?