Abstract
High population growth rate will increase the infrastructure development, so the impervious land cover in a certain area will be greater. In 2016, the percentage of impervious area in UI Depok catchment area has reached 57%. This condition causes the surface runoff volume and probability of flood will increase. LID is a new paradigm for stormwater management in micro-scale areas. LID infrastructure is designed to manage stormwater for light to moderate rainfall spectrum. Previous research has produced an applied proposal of various LID-BMP infrastructure in UI catchment area, Depok, by using BMP Siting Tools. This study aims to compare the volume of surface runoff without and with the LID infrastructures on UI catchment area, Depok, and to calculate the effectiveness of LID infrastructure for various spectrum of rainfall. The LID infrastructures used are bioretention, porous pavement, infiltration trench, infiltration basin, vegetated filter strip, sand filter non-surface, sand filter surface, rain barrel and grassed swales. By applying said infrastructures, the reduction of peak flow on various rain spectrums vary from 3-30%.
Highlights
In the catchment area of UI campus itself, the percentage of land built in 2016 has reached 52%
Technology that can be implemented according to the result of running Best Management Practices (BMPs)
The reduction of peak flow on various rain spectrums vary from 3-30%
Summary
In the catchment area of UI campus itself, the percentage of land built in 2016 has reached 52%. The surface runoff volume will increase, resulting in flooding. Flood is an increase in the amount of water that is not contained in the channels, so that overflows and inundate areas outside the channel [1]. According to the hydrological function, the incidence of flooding is when the water level is higher than the normal water level [2]. Some efforts to reduce floods according are to build absorption wells and biopores. Both buildings are the absorption of the LID concept
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