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Which hydrological factor is most critical in determining the peak flow using the Rational method?
26. Which hydrological factor is most critical in determining the peak flow using the Rational method?
- Rainfall duration
- Catchment area
- Runoff coefficient
- Rainfall intensity
Answer
The correct answer is: D) Rainfall intensity
Explanation
The peak flow estimated by the Rational method is highly sensitive to the rainfall intensity, as it directly influences the amount of runoff generated.