Study of climate change effect on water balance in upper Citarum Watershed, the Krueng Cunda Watershed, and the Woske Watershed, Indonesia

Abstract

The community feels the changes in water availability due to climate change will directly impact water availability, especially water availability in rivers, reservoirs and other water reservoirs. The purpose of this analysis is to determine changes in the rainy season shift, changes in mainstay discharge, and the effect of climate change on water balance. The results show a shift in the rainy season and a significant decrease in rainfall during the last ten years. In the Upper Citarum watershed (UCW), there is a change in the maximum and minimum mainstay discharge in the three watersheds. Climate change significantly affects the water balance in a watershed. Meanwhile, in the Krueng Cunda watershed (KCW) and the Woske watersheds (WW), there was a decrease in the value of the water balance, which was the same as the UCW. However, still able to meet the water needs of the population. There was a decrease in the value of the water balance, which was the same as the UCW, but still able to meet the population’s water needs.