Banyuasin Valley region is located in lowland areas that is potentially subjected to hazard of flooding and submergence. The indication of reduction hazard in water availability is in the period of 2010 with decreasing value of Total Run Off at -500 mm/year and in the period 2030 is the lowest decline of the region Banyuasin with a value of -100 mm/year. Tanjung Api-api port, built in this area, is feared to be vulnerable to the availability of clean water due to the impact of climate change.

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... e vulnerability components consist of exposure, sensitivity, and adaptive capacity. The formula means vulnerability to a certain hazard is strengthened by its exposure and its sensitivity and decreased by its adaptive capacity. The results of this study showed that water availability in the baseline condition is in low vulnerability (47.91%) whereas, at the projection condition, vulnerability is in the category of moderate vulnerability (81.28%).