Practice Curve Number Cn (2.1) - Runoff and Surface Water Hydrology

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8 questions

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6 sample questions

Question 1.
What is runoff?
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Think about what happens to rainwater.
Question 2.
What is the Curve Number range?
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Recall the significance of higher numbers.
3Question 3.
What is the Curve Number primarily used for?
- Estimating runoff
- Measuring snowfall
- Determining evaporation
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Consider its application in hydrology.
4Question 4.
True or False: Higher Curve Numbers are associated with lower runoff.
- True
- False
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Remember how runoff works!
Question 5.
A watershed has a Curve Number of 80 and receives 100 mm of rain. Calculate the runoff. Discuss the implications for flood risk management.
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Apply the Curve Number method step-by-step.
Question 6.
Compare the runoff calculations for two watersheds: one with a CN of 60 (forest) and the other with a CN of 90 (urban) under the same rainfall of 50 mm. Analyze the results.
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Use the differences in CN to highlight runoff disparities.

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