Which risk increases when an alluvial channel experiences increased sediment load during flash flooding?

💡 Explanation

When sediment load increases in an alluvial channel, aggradation occurs because deposition exceeds erosion, leading to channel avulsion where the river jumps its banks and establishes a new course. Therefore aggradation and channel avulsion are more likely, rather than fertility decrease, reduced infiltration, or increased vegetation which require different environmental changes.

• Which mechanism causes deflection of ocean gyres formed along continental eastern boundaries?
• Which geological outcome arises when increased pore water pressure weakens fault zone material along a transform fault?
• Which phenomenon primarily causes the deflection of large subtropical ocean currents?
• Which soil consequence results when increased water runoff accelerates weathering?
• Which outcome accelerates coastal erosion when streams carrying sediment are dammed?
• Which ocean outcome results during intense El Niño?