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Aquatic system quality degradation by urban runoff owing to the effect of increasing impervious cover due to urbanization is becoming a serious issue. Based on 2015 data, with total imperviousness more than 60% in aquatic system catchment area of Universitas Indonesia (UI) Campus, the aquatic system quality is in poor condition. Best Management Practices (BMPs) as the practical form of Low Impact Development (LID) concept are proposed to be implemented in the catchment area. The performance of BMPs implementation can be quantitatively assessed using System for Urban Stormwater Treatment and Analysis Integration (SUSTAIN) model developed by US Environmental Protection Agency. As a decision support system, SUSTAIN model as the extension of ArcGIS can be applied for placement of BMPs at strategic locations in urban watersheds. This study aims to find the suitable location of BMPs placement in nine sub-catchments of UI Campus aquatic system catchment area. The suitability criteria for placing structural BMPs comprise nine database layers including slope, soil type, urban land use, percent impervious, land ownership, roads, water table depth, stream location, and drainage area. The study shows that there are ten types of BMPs that suitable to be implemented in UI campus catchment area, while three types of BMPs are not suitable. Based on the validation analysis, the applicable result from SUSTAIN model is 18 of 20, or has 90 percent of trust

Placement of BMPs in urban catchment area using SUSTAIN model: case study at Universitas Indonesia Campus, Depok, West Java, Indonesia