Seite - 468 - in Book of Full Papers - Symposium Hydro Engineering

Djuanda became the main source of supply to meet various water needs downstream of Ir. H. Djuanda dam. Fig. 2. Schematic development of water resources in the Citarum River Basin through optimization of water sources from rivers around the Citarum River The potential of natural resources in WS Citarum can be distinguished into: [1] natural resource potential of Citarum River which is managed through Citarum cascade reservoir operation and, [2] optimization of local water sources through the operation of weirs. With the existence of the three reservoirs in the Citarum River, almost all the potential of natural resources in the Citarum River of 6.0 x 109 m3 can be used to meet various downstream needs as a by product of electricity generation, because the main priority of Citarum cascade reservoir operation is for the fulfillment the need for water downstream of the Jatiluhur dam. With no reservoirs for local water sources, the potential of natural resources of 6.95 x 109 m3 can only be used for 1.65 x 109 m3. The biggest beneficiary is for irrigation by 87% of the total manageable water as “Fig.3”. Fig. 3 Configuration of potential and utilization of water resources in Citarum River Basin Regulated 7.65 x 10 9 m 3 /year Equal to 59.07% From Citarum: 6.00 x 10 9 m 3 /year (all utilized for HEPP) 9 3 Unregulated 5.30 x 10 9 m 3 /year Equal to 40.03% Total ±12.95 Billion m 3 /year Citarum : 6.00 Bm 3 /year 3 468