Civil Engineering - UPSC Civil Service Exam Questions - Discussion

27. 

A 4-hour rainfall in a catchment of 250 km2 produces rainfall depths of 6.2 cm and 5.0 cm in successive 2-hour unit periods. Assuming the φ index of the soil to be 1.2 cm/hour, the run-off volume in ha-m will be

[A]. 16
[B]. 22
[C]. 1600
[D]. 2200

Answer: Option C

Explanation:

No answer description available for this question.

Sekhar Samal said: (Jan 4, 2016)  
I want this solution.

Manju said: (Jan 4, 2016)  
Runoff depth = (6.2-1.2x2) + (5-1.2x2).

= 3.8 + 2.6 = 6.4 cm.

Runoff volume = 6.4x10^-2x250x10^6x10^-4 ha-m.

= 1600 ha-m.

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