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← ScienceWhich outcome occurs when river flow exceeds design capacity?
A)Increased sediment erosion and transport✓
B)Decreased boundary shear stress locally
C)Laminar flow along river bottom
D)Reduced dissolved oxygen concentrations
💡 Explanation
When the design capacity is exceeded, increased velocity triggers turbulent flow. This induces higher shear stresses via increased momentum transfer through eddy viscosity because of turbulence, therefore causing greater sediment transport rather than creating laminar flow or lowering erosion.
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