10.1.3 Overflow

To consider the amount of surface runoff captured by LID practices, a modified surface runoff equation (Equation (10.6)) was added in the existing codes.
(10.6)

where is the surface runoff volume (m³) in which the impact of LID practices is considered, is volume of water stored in LID practice. is the designed LID volume. If is larger than the , the surface runoff would be generated.