A watershed has a drainage area of $200 \text{ km}^2$. A storm event produces a direct runoff depth of $15 \text{ mm}$. What is the total volume of direct runoff in cubic meters?
Question 2
The 'time of concentration' of a watershed is a crucial parameter in hydrograph analysis. Which of the following best defines the time of concentration?
Question 3
In unit hydrograph theory, what does the assumption of 'time invariance' imply about the watershed's response to effective rainfall?
Question 4
Which of the following best describes the process of 'hydrograph recession analysis'?
Question 5
If a watershed has a highly impervious surface area due to extensive urbanization, how would its unit hydrograph typically be affected compared to its pre-urbanization state?
