ASSESSMENT OF VULNERABILITY INDEX OF WATER RESOURCES TOWARDS CLIMATE VARIABILITY IN UPPER THE CITARUM WATERSHED, WEST JAVA, INDONESIA

Abstract

This study aimed to evaluate the vulnerability index of water resources towards the climate variability of the upper Citarum watershed in West Java Province. The vulnerability was estimated using the IPCC concept, where vulnerability is a function of exposure, sensitivity, and adaptive capacity. The criteria and indicators of exposure, sensitivity, and adaptive capacity were obtained via analysis of secondary data consisting of climate data, hydrological data, and the ability of the community to adapt to events of water resource vulnerability. The criteria and indicators were then scored and weighted according to their degree of interest; they were then presented spatially and overlaid to obtain the vulnerability maps. This study also predicted the rainfall intensity in Citarum Watershed until 2040. Rainfall is predicted to increase until 2040, especially in wet months (January-March); dry months are predicted to have no significant increase in rainfall. A vulnerability map was then prepared to show each watershed percentage with categories of high, medium, and low vulnerability levels. This review can be used for watershed management or other shareholders to construct a strategy, plans, and actions that overcome issues of water resource vulnerability.