25.3.3. Analytical Methods

Try these first

1. 1.

   What does depression storage refer to?

   Hint

   Think about what happens to water after it rains.

2. 2.

   What is the SCS Curve Number Method used for?

   Hint

   Consider how different surfaces behave during rainfall.

3. 3.

   What does the SCS Curve Number Method help estimate?

   • Only infiltration
   • Only evaporation
   • Runoff and depression storage

   Hint

   Consider all hydrological outcomes.

4. 4.

   True or False: Initial abstraction includes only evaporation losses.

   • True
   • False

   Hint

   Think about the broader definitions.

5. 5.

   A town experiences a rainfall event with an initial abstraction of 5 mm. Using the SCS formula, calculate the potential maximum retention if the curve number is known to be 35.

   Hint

   Remember to rearrange the formula correctly.

6. 6.

   Analyze the impact of increasing urbanization on peak runoff and how it relates to changes in depression storage. Discuss your findings.

   Hint

   Consider how urban structures alter water pathways.