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← GeographyWhich process increases discharge variability downstream in alluvial rivers?
A)Hyporheic exchange buffering flow
B)Levee construction channeling floods✓
C)Enhanced downstream sediment deposition
D)Extensive flood plain groundwater recharge
💡 Explanation
Levee construction prevents floodplain inundation and reduces storage; therefore, peak discharge concentrates in the channel, increasing variability, because floodplains can no longer buffer flow naturally, rather than distributed across a wide inundated area.
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