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3 cards from this section. Quick, good the night before a test.
What does the W-Index measure?
Think about what happens to rainfall before it contributes to runoff.
What does 'initial losses' refer to?
Consider how vegetation affects precipitation.
What is the formula for calculating the W-Index?
Recall the components involved in runoff estimation.
True or False: The W-Index is less accurate than the φ-Index.
Think about what each index accounts for.
During a storm, urban area P records total precipitation of 150 mm, with initial losses of 50 mm, resulting in 60 mm of runoff over a duration of 6 hr. Calculate the W-Index and discuss how it could affect city planning.
Understand that high runoff could lead to flooding if the drainage isn't adequate.
In a rural area with P = 80 mm, initial losses of 10 mm, and Q = 20 mm, how does the W-Index compare to urban settings? Evaluate the implications.
Think about how infiltration may vary greatly between urban and rural contexts.
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