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Citarum River as the largest river in West Java gives an important role for the life of the community either directly or indirectly. However, the pollution that occurs on the Citarum River is very high that its tributary water cannot be used properly. One of the efforts to rehabilitate the quality of the Citarum River is by utilizing the water quality modeling. The purpose of this study was to obtain the maximum BOD values that can be accepted by the Citarum River for the rehabilitation purpose. The modeling prepared in this research was using the Streeter-Phelps equation. The data analyzed in this study is derived from the West Java Province Government monitoring sampling in 2013, 2014 and 2015. Sampling area covers Dayeuhkolot area to Nanjung. The calculation result using Streeter Phelps equation provides the concentration value of deficit oxygen and BOD load. The deficit oxygen calculated by the model shows its concentration was ranging between 3.20 mg/L and 3.68 mg/L, while the maximum BOD load concentration is ranging between 8.06 mg/L and 23.83 mg/L. Using this value, the government can create a strategy for managing the Citarum River so that its water quality can be returned in accordance with its designation.

DETERMINATION OF MAXIMUM BOD LOAD USING WATER QUALITY MODELING OF UPSTREAM CITARUM RIVER