Practice Common Infiltration Indices (31.3) - Infiltration Indices - Hydrology & Water Resources Engineering - Vol 2

Practice: Common Infiltration Indices

Lesson 31.3Infiltration Indices

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11 questions

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5 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
5 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the φ-index represent?
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Think about how rainfall exceeds what can be absorbed.
Question 2.
Name a factor that the W-index considers that the φ-index does not.
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Consider how much water gets intercepted before infiltrating.
3Question 3.
What does the φ-index fail to account for?
- Initial abstraction
- Cumulative infiltration
- Runoff volume
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Think about what happens before water begins to infiltrate.
4Question 4.
True or False: The W-index gives a more accurate representation of infiltration by including initial losses.
- True
- False
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Recall the definition of the W-index.
Question 5.
During a heavy storm, you total 100 mm of rainfall over 5 hours, with an observed runoff of 40 mm and initial abstraction of 15 mm. Calculate the φ-index and W-index.
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Use the relevant formulas for each index.
Question 6.
Consider a scenario where you have a test catchment with a varying rainfall and runoff pattern. How would you analyze which infiltration index to use, based on historical data?
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Identify the data characteristics and storm behavior.

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