Which outcome occurs when increasing alluvial deposition creates a steeper slope along a river's floodplain?

💡 Explanation

Increased alluvial deposition causing a gradient increase favors channel instability; the stream power exceeds the sediment transport capacity and accelerates downstream sediment sorting, resulting in increased **aggradation**, because the flow diverges among multiple shallow channels, leading to a braided pattern rather than reduced bedload or suspended load.

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