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Which hydrologic parameter is crucial for determining the design capacity of culverts and bridges?

31. Which hydrologic parameter is crucial for determining the design capacity of culverts and bridges?

1. Velocity of flow
2. Infiltration rate
3. Hydraulic gradient
4. Design flood magnitude

Answer

The correct answer is: D) Design flood magnitude

Explanation

The highest projected flood occurrence is represented by the design flood magnitude, which is essential for figuring out the design capacity of culverts and bridges.