14.4. PMP Estimation for Different Durations and Areas

Try these first

1. 1.

   What does PMP stand for?

   Hint

   Think about what the term refers to.

2. 2.

   How do smaller areas generally compare regarding PMP values?

   Hint

   Consider the intensity of rainfall.

3. 3.

   What does a shorter duration of rainfall typically result in for PMP estimates?

   • Higher PMP values
   • Lower PMP values
   • No effect

   Hint

   Think about how storms behave over time.

4. 4.

   True or False: Larger areas will always produce higher PMP estimates than smaller areas.

   • True
   • False

   Hint

   Consider the definition of concentration.

5. 5.

   You are faced with a scenario involving an engineering project in a mountainous region. The designs predict both 6-hour and 24-hour PMP values. If the 6-hour value is 50 mm, what might the 24-hour value generally indicate based on DAD principles?

   Hint

   Remember how intensity spreads over time and area.

6. 6.

   Explain how you would approach designing flood-control measures in a city that experiences both short intense storms and longer, lighter rainfall. What factors would you consider in light of PMP estimation?

   Hint

   Reflect on intensity and water drainage capabilities.