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← GeographyWhich erosional outcome amplifies when river levees artificially constrain channel width?
A)Increased downstream flow sediment deposition
B)Decreased point bar sediment accretion
C)Accelerated channel bank lateral erosion✓
D)Enhanced floodplain vertical sedimentation
💡 Explanation
Accelerated channel bank erosion occurs because the increased flow velocity in confined channels leads to greater shear stress. This amplifies lateral erosion from hydraulic action rather than depositional processes; therefore, option C is correct.
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