Which consequence results when levee sediment coarsening decreases?

💡 Explanation

Increased proportions of finer sediment weaken the levee; this reduction causes easier levee breaching, thus an increased avulsion risk because the force needed to change the stream's course sharply falls, rather than remaining localized flow.

• Which erosional outcome occurs when a dam interrupts alluvial sediment deposition downstream?
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• Which outcome results when subduction causes hydrothermal vent blockage?
• Which outcome increases when CO2 concentration drops inside caves?
• Which outcome is accelerated during episodic dome building?
• Which landscape change accelerates when bioturbation diminishes in tundra?