Which outcome occurs when a river's levees erode?

💡 Explanation

Floodplain sedimentation increases because the eroded levees reduce the channel's capacity to contain floodwaters, therefore, more sediment is deposited over the wider floodplain, rather than the sediment being conveyed further downstream within the channel.

• Which risk increases where the North Atlantic Deep Water formation slows?
• Which erosional process primarily drives the formation of a cirque in mountainous regions?
• Which outcome occurs when rapid aggradation overwhelms a fluvial system forming an alluvial fan?
• Which mechanism maintains atmospheric heat balance when subtropical high-pressure cells intensify?
• Which feedback mechanism enhances cirque formation at high altitudes?
• Which risk significantly increases when highly viscous lava reaches seawater?