43.1.5 - Infiltration Indices
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Practice Questions
Test your understanding with targeted questions
Define the ϕ-index in one sentence.
💡 Hint: Think about how it relates to rainfall and runoff.
What does W-index measure?
💡 Hint: Consider what happens during a rain event.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of the ϕ-index?
💡 Hint: Focus on the role of the ϕ-index in water movement.
Is the W-index used to measure infiltration that occurs after runoff begins?
💡 Hint: Think about what happens at the beginning of rainfall.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A study site has an initial infiltration rate of 20 mm/hr and a final rate of 5 mm/hr with a decay constant of 0.08. Calculate the infiltration rate after 5 hours using Horton's Equation.
💡 Hint: Remember to use the decay constant and exponentiate correctly.
Analyze how changes in land use from agricultural to urban can affect the values of the ϕ-index and W-index in the context of runoff management.
💡 Hint: Think about the nature of the surfaces and the direction of water.
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