Question

The rainfall on five successive days on a catchment was 3, 6, 9, 5 and 1 cm respectively. If the $\varphi$ - index for the storm can be assumed to be 3 cm/day, the total direct runoff from the catchment due to this storm is

• A. 11 cm
• B. 24 cm
• C. 9 cm
• D. 20 cm

Answer 1

The correct option is A 11 cm

Day Rainfall (cm) Runoff (cm)

1 3 0 2 6 3 3 9 6 4 5 2 5 1 0

$\sum R=11cm$