31 - Infiltration Indices
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Practice Questions
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Define Infiltration Capacity.
💡 Hint: Think about the 'max' rate of absorption.
What does the φ-index represent?
💡 Hint: Contains 'phi' & relates to average rates.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the φ-index represent?
💡 Hint: Focus on what φ relates to in terms of average performance.
True or False: The W-index can calculate runoff even when initial losses are unknown.
💡 Hint: Consider the role of initial conditions.
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Challenge Problems
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Given a rainfall of 200 mm and a direct runoff of 80 mm over 4 hours, calculate the φ-index, and discuss how accurate this representation is under different conditions.
💡 Hint: Focus on how rainfall duration impacts the infiltration capability.
Provide a detailed plan for selecting between φ-index and W-index for a proposed urban drainage system, considering local conditions.
💡 Hint: Think about local land cover, vegetation, and recent rainfall history.
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