| Title |
Evaluation on the Hydrologic Effects after Applying an Infiltration Trench and a Tree Box Filter as Low Impact Development (LID) Techniques |
| Authors |
( Precious Eureka D Flores ) ; ( Marla C Maniquiz Redillas ) ; ( Jevelyn Ann S Tobio ) ; ( Lee Hyung Kim ) |
| DOI |
https://doi.org/10.15681/KSWE.2015.31.1.12 |
| Keywords |
Hydrologic effect; Low impact development; Peak flow; Rainfall; Runoff |
| Abstract |
In this research, the hydrologic effects between a pre-existing urban landuse and low impact development (LID) applied conditions were compared and evaluated. The infiltration trench and tree box filter that were utilized in LID represent only 1% of the catchment area that they drain. Storm event monitoring were conducted from July 2010 to July 2014 on a total of 22 storm events in both LID sites. After LID, hydrological improvement was observed as the sites exhibited a delay (lag time) or reduction in the magnitude, frequency and duration of runoff and flow peaks as the rainfall progress. In addition, the maximum irreducible peak flow reduction for infiltration trench was found to be 61% and 33% for the tree box filter when rainfall was 40 mm and 30 mm, respectively. In designing LID, it is recommended to consider the storage capacity and catchment area, as well as the amount of rainfall and runoff on the site. |