Proper Sizing of Infiltration Trenches Using Closed-Form Analytical Equations

Infiltration trenches in urban areas are mainly used for the purposes of water balance maintenance and water quality improvement. To ensure that a high enough fraction of runoff from a contributing catchment is infiltrated, trenches are usually sized to provide enough storage capacity so that runoff from a design storm of certain depth can be temporarily stored and infiltrated. Since it is difficult to quantify the actual long-term average …