31.3.2 - W-index
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Practice Questions
Test your understanding with targeted questions
What does the W-index account for that the φ-index does not?
💡 Hint: Consider what happens to rainfall before it infiltrates.
State the formula for calculating the W-index.
💡 Hint: What factors influence runoff and infiltration?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of the W-index in hydrology?
💡 Hint: Think about what happens before water infiltrates.
True or False: The W-index only works for rural areas.
💡 Hint: Consider the implications of urbanization.
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Challenge Problems
Push your limits with advanced challenges
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.
💡 Hint: Plug in the values into the W-index formula.
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.
💡 Hint: Consider how land use influences infiltration characteristics.
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