Infiltration Well Efficacy in Citarum Basin Based on Rainfall-Runoff Volumetric Analysis

[EN] Run-off management is the main challenge of every big city. Land availability, project timeframe, and financing are several issues regarding run-off implementation, including Indonesia’s Capital City, Jakarta. One engineering tools that used to reduce negative impacts in Jakarta Infiltration Well. Several researches on this topic confirm positive impact building infiltration well small catchment area. This study aims understand efficacy basin area, Ciliwung Basin. divided into two sub-basin, Upstream Downstream Ciliwung. The analysis performed using volumetric abstraction volume daily rate. 4 rainfall stations study, 2-gauge each basin. capacity tested with different return-period based storm-rainfall (3-days cumulative rainfall). results show by implementing 1 million wells at sub-basin below 10% for 10-year return period 5% 25-year rainfall.