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3 cards from this section. Quick, good the night before a test.
What is a hydrograph?
Think about what it represents in terms of water flow.
Why are initial losses important in the calculation of infiltration indices?
Consider what happens to the water before it infiltrates.
What does the φ-index represent?
Recall the definition from our discussions.
True or False: Initial losses must be considered when calculating W-index.
Think about the definition of W-index.
You have rainfall data showing 100 mm over a 4-hour storm. The hydrograph indicates direct runoff of 70 mm, and initial losses are estimated at 25 mm. Calculate both the φ-index and W-index.
Break down the calculations step by step.
Discuss the potential consequences of overlooking initial losses when estimating runoff in an urban drainage system.
Consider the role of initial conditions in runoff generation.
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