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← GeographyWhich outcome arises when excessive development restricts floodplains near levees?
A)Increased erosion on the levee slope✓
B)Decreased sediment replenishment downstream delta
C)Reduced groundwater recharge nearby aquifers
D)Enhanced nutrient delivery in managed wetlands
💡 Explanation
Increased floodplain restriction due to development causes increased river flow velocity and hydraulic pressure, resulting in increased erosion. This occurs because the decreased channel roughness height increases sheer stress; therefore, erosion increases rather than nutrient balance which depends on other factors.
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