13. Maximum Intensity / Depth-Duration-Frequency Relationship

Try these first

1. 1.

   Define rainfall intensity in your own words.

   Hint

   Think about how rainfall is measured.

2. 2.

   What does IDF stand for?

   Hint

   Remember the relationship we discussed that involves duration.

3. 3.

   What does the IDF relationship correlate?

   • Rainfall intensity and frequency
   • Rainfall intensity and duration
   • Rainfall depth and duration

   Hint

   Think about what the letters 'IDF' stand for.

4. 4.

   True or False: The DDF relationship is only concerned with rainfall intensity.

   • True
   • False

   Hint

   Recall what DDF stands for.

5. 5.

   You have long-term rainfall data for a region. How would you approach developing an IDF curve for a 100-year return period?

   Hint

   Start by considering the types of data you need to collect.

6. 6.

   A drainage system failed during a crucial rain event because the IDF curves used were outdated. What modern techniques could engineers implement to improve predictions?

   Hint

   Consider advancements in technology and data sources.