Seite - 307 - in Book of Full Papers - Symposium Hydro Engineering

Figure 4. The condition of Sengguruh reservoir sedimentation L'état de la sédimentation du réservoir de Sengguruh Table 1. The historical changes of Sengguruh reservoir storage capacity 3.2. DREDGING WORK ON CURRENT CONDITION Some control efforts have been made actually, both in stream or off stream, one of them is by sediment dredging. This dredging activity has been done routine every year from year of 2001 with an average dredging volume of 300,000 m3 / year using 2 (units) cutter suction dredger. The location of sediment disposal area (spoilbank) spread out around the reservoir, meanwhile available spoilbank is very limited and provides the new one is very costly. the dredging has been done in the upstream area which is quite far away + 1,500-2,000 m from hydropower intake due to get close of spoilbank location, to get low fuel consumption, to maximize available dredgers production capacity which has 307