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← GeographyWhich consequence results when levee construction constricts channel width?
A)Increased stream power, channel incision✓
B)Decreased gradient, sediment deposition
C)Reduced floodplain connectivity laterally
D)Enhanced hyporheic flow buffering effect
💡 Explanation
Increased stream power and channel incision occur because *flow constriction* increases velocity and shear stress during high discharge affecting sediment entrainment; therefore, channel erosion occurs rather than deposition or lateral flow because the increased erosive force dominates over sediment supply.
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