POTENTIAL IMPACT OF CLIMATE CHANGE ON WATER RESOURCES AVAILABILITY IN BANTAENG DISTRICT, SOUTH SULAWESI PROVINCE Muhammad Chaerul 1*, Sri Gusty1, Ismail Marzuki 2, Nur Khaerat Nur3, Muh. Rusli4
1Infrastructure and Environmental Engineering, Postgraduate Faculty, Fajar University, Makassar, Indonesia
2Chemical Engineering, Engineering Faculty, Fajar University, Makassar, Indonesia
3Civil Engineering, Engineering Faculty, Fajar University, Makassar, Indonesia
4Postgraduate Student Infrastructure and Environmental Engineering, Fajar University, Makassar, Indonesia
As a result of climate change, the rain pattern condition will be more extreme, wherein the rainy season, the higher the rainfall, which can trigger more floods and landslides. In comparison, in the dry season, the less rain is added with increased evaporation due to increased temperatures, which can trigger disasters. Drought. This research aims to what extent the impact of climate change on water availability will be used as the primary raw material for PDAM in Bantaeng Regency. The results of climate change projections show that the potential monthly average surface water discharge in Bantaeng Regency, especially the watershed used by PDAM, changes fluctuatively. During the rainy season, the projected run-off discharge increases by around 15%, while during the dry season, it decreases by about 13% in the Nipa-Nipa, Gusung, and Kaili Watershed. This indicates that the vulnerability of surface water resources at the peak of the dry season (August) to the watershed with PDAM intakes- however, in general, the availability of surface water resources in the three watersheds is relatively safe, as indicated by the projection results of run-off discharge on average. The annual average increased by 4%.
Keywords: climate change, water resources, PDAM, Bantaeng