Abstract
As the biggest watershed in West Java, Citarum plays an important role in supplying water for many districts in the province. The Citarum watershed supplies approximately 7,650 million cubic metres of water per year (m³ a?1). Currently, approximately 78% of the extracted water is used for irrigation, 14% for industrial activities and electricity generation, and 8% for domestic consumption. Analysis of this watershed found it to be very vulnerable to climate change. It was found that all of the sub-districts already experience water deficit problems (i.e. not enough supply to meet their demands), particularly in the lower areas such as Kerawang, Bekasi and Purwakarta, even without a changing climate and if the level of water extraction from the streamflow was limited to 10% of the mean annual flow. In 2080, the water deficit for most of the sub-districts in this lower area would be even more severe. Increasing water extraction to 20% of the mean annual flow would not change the water status of these sub-districts. Consequently, conflicts among water users may be a serious problem for these regions in the future.
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Acknowledgement
The authors wish to acknowledge START/GEF/UNEP, who provides financial support to the study. The authors also acknowledge Eko and Mamnun for their assistant in preparing maps and data processing during the study and Jessica for editing the manuscript.
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Boer, R., Dasanto, B.D., Perdinan, Marthinus, D. (2012). Hydrologic Balance of Citarum Watershed under Current and Future Climate . In: Leal Filho, W. (eds) Climate Change and the Sustainable Use of Water Resources. Climate Change Management. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22266-5_3
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