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Infiltration Indices Part 1 GATE 2024 Fundamental Quiz

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Question 1

The total observed runoff volume during a 6h storm with a uniform intensity of 1.5cm/hr is 23.04×106 m3 from a basin of 320 km2 of area. The average infiltration rate for the basin is ……… mm/hr

Question 2

The total rainfall in a catchment of area 1000 km2 during an 8 hours storm is 24 cm, while the surface runoff due to the storm is 2 × 108 m3. The ϕ-index is ____

Question 3

In a particular season a catchment was found to have a φ index of 0.3 cm/hr. If a rainfall of 3cm occur in the season at a uniform rate in a 12 hr storm, the resulting direct runoff is

Question 4

A storm with a uniform intensity at 1.6 cm/hour for a period of 8 hour occurring over a basin-area of 650 km2, produced a run-off 57.2 Mm3. The average infiltration rate in (mm/hr) will be

Question 5Multiple Correct Options

Select the correct statement related to infiltration

Question 6

A seven hour storm over a basin of 1830 km2 produced the rainfall at half an hour duration are 2.2, 1.6, 3.5, 4, 1.9, 3.7, 2 cm. If the corresponding runoff is 10.248 × 107 m3, the ϕ – index in cm/h is
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