The unit hydrograph of a catchment is derived assuming uniform rainfall excess over the entire basin for a specific duration. If the rainfall duration is doubled while keeping rainfall intensity the same, which of the following is most likely?
- AOption (a)
Peak discharge doubles
- BOption (b)
Base width halves
- COption (c)
Ordinates increase but peak reduces
- DOption (d)
A new unit hydrograph must be derived
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Correct answer
Peak discharge doubles