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← GeographyWhich outcome is amplified when artificial levees narrow rivers?
A)Increased downstream flood pulse magnitude✓
B)Decreased rate of sediment deposition
C)Enhanced delta formation at the mouth
D)Reduced riverbed incision upstream
💡 Explanation
Increased channelization intensifies downstream flooding because reduced floodplain storage raises discharge; therefore, flood peaks increase with 'desynchronized' flood pulses, rather than moderated sediment deposition which typically slows floodwaters as they spread.
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