Practice W-index (31.3.2) - Infiltration Indices - Hydrology & Water Resources Engineering - Vol 2

Practice: W-index

Lesson 31.3.2Infiltration Indices

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8 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the W-index account for that the φ-index does not?
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Consider what happens to rainfall before it infiltrates.
Question 2.
State the formula for calculating the W-index.
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What factors influence runoff and infiltration?
3Question 3.
What is the main purpose of the W-index in hydrology?
- To simplify runoff calculations
- To account for initial losses
- To represent rainfall intensity
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Think about what happens before water infiltrates.
4Question 4.
True or False: The W-index only works for rural areas.
- True
- False
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Consider the implications of urbanization.
Question 5.
In a storm event, total rainfall is found to be 120 mm, with an observed direct runoff of 50 mm, and initial losses estimated at 20 mm over a storm duration of 3 hours. Calculate the W-index and discuss the implications of initial losses on overall runoff estimation.
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Plug in the values into the W-index formula.
Question 6.
Imagine a catchment area that experiences varying absorption rates due to different land uses. Discuss how this variation would affect the application of the W-index.
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Consider how land use influences infiltration characteristics.

4 more questions in this section. Enroll free to practise them all.