Question

The two components for measuring time of concentration for storm water are:

• A. overland flow time and retention time.
• B. overland flow time and gutter flow time.
• C. detention time and gutter flow time.
• D. retention time and inlet time.

Hint:

Time of concentration is an important factor for determining the peak discharge in urban drainage design.

Answer 1

The Correct Option is B

In hydrology, the time of concentration is the time required for water to travel from the most distant point of the drainage area to the point of interest. The two main components of the time of concentration for stormwater are:
1. Overland flow time: The time it takes for water to flow over the ground.
2. Gutter flow time: The time for water to flow through a stormwater gutter.
Thus, the correct answer is (B).