The formula to calculate the Time of Concentration (Tc) is:
\[ \text{Tc} = \left(0.0078 \times \text{Lc}\right)^{0.77} / \text{Sc}^{0.385} \]
Where:
Time of concentration is defined as the time it takes runoff water to travel from the hydraulically most distant point in the watershed to the outlet of the watershed.
Let's assume the following values:
Using the formula to calculate the Time of Concentration:
\[ \text{Tc} = \left(0.0078 \times 500\right)^{0.77} / 0.02^{0.385} = \left(3.9\right)^{0.77} / 0.02^{0.385} \approx 1.95 / 0.14 \approx 12.9 \text{ hours} \]
The Time of Concentration is approximately 12.9 hours.
