A 4-hr storm had 4 cm of rainfall and the resulting direct runoff was – McqOptions

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1.	A 4-hr storm had 4 cm of rainfall and the resulting direct runoff was 2.0 cm. If the ϕ -index remains at the same value, the runoff due to 10 cm of rainfall in 8 hour in the catchment will be:
A.	4.0 cm
B.	6.0 cm
C.	7.5 cm
D.	8.0 cm
Answer» C. 7.5 cm

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