With urbanization accelerating, more land is developed for further human activities. This in turn would create more impermeable surfaces so that less rainfall will be infiltrated, and more runoff is created. This research aims to design a stormwater management system based on the Zero Delta Runoff Approach through implementation of BMP infrastructure in the Faculty of Engineering in Universitas Indonesia.
The types of BMP infrastructures used as well as the placement of each infrastructures is done using the BMP Siting Tool. The ArcGIS is also used to map the whole catchment area and the land use. As for the calculation of runoff conditions, the software used is WinTR-55. Results show that through the proposed implementation of BMP infrastructures recommended by the BMP Siting Tool, which are green roofs, cistern systems and porous pavements, it reduces the amount of runoff by on average 7.8 % for return periods of 2, 5, 10, and 25 years with the highest in the 2-year return period. Porous pavement also provides the highest amount of contribution shown in the sub-area that has the largest amount can reduce by up to 9.67% in that sub-area. In conclusion, the proposed design could not create runoff conditions as the same as the pre-development conditions. However, the amount of reduced runoff still creates benefits and can reduce runoff effectively especially in low intensity precipitations."
