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One of the main environmental issues concerning the Bili-bili Reservoir is its declining storage capacity. The reservoir was designed with a projected life of 50 years, with a dead storage capacity of 1,500 m³/km²/year of sediment (CTI, 1994). However measurements undertaken by a team of researchers at Universitas Hasanuddin (UNHAS) with assistance from the Collaborative Environmental Project in Indonesia (CEPI)/University Consortium on Environment (UCE) Project during Phase II of the Jeneberang Watershed Integrated Management Study, show that the rate of sedimentation at that time was equivalent to 2,000 m³/km²/year (ESC UNHAS, 2001). If efforts are not made to control sedimentation, the usefulness and economic life of the reservoir