Which outcome results when sediment deposition obstructs a river delta distributary channel?

💡 Explanation

Channel avulsion occurs because the **sediment diversion** increases flow resistance, diverting streamflow into a steeper, unobstructed path; therefore, avulsion shifts the river course upstream, rather than only increasing deposition downstream or near the blockage.

• Which consequence results when rising sea levels accelerate?
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• When breached, which outcome occurs in volcanic tephra dam?
• Which outcome occurs when subsurface hardpan hinders drainage?
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• Which outcome is accelerated across exposed playa when subjected to extreme aridity?