DefinePK

Abstract

Climate change affects the water cycle on the face of the earth which directly affects water availability. This study was conducted to identify the hazards of climate change to the water sector that are likely to occur in the Singkoyo Watershed. Some of the methods used include: Penman-Monteith method, calibration solver, F. J. Mock model, Mann Kendall and Sens (Makesens), relative distribution frequency (RDF) and weighting. The data used are secondary data, namely rainfall and climate of Singkoyo Station in the year 1986-2017. The results of the analysis of rain and climate data indicate that climate change has occurred in the Singkoyo Watershed. The hazard of decreasing water availability occurs in all projection periods with the weight of the hazards varying from the hazard of decreasing the availability of very high, high, medium and low water. The hazard of flooding does not occur this is seen from the decrease in the total runoff value (TRO) in the projected condition. While drought hazards occur in all projection periods with very high hazard weights due to a decrease in TRO = 120 mm/year, except for the period 2056 - 2065 there is a moderate drought hazard with hazard weight 3, where TRO reduction is 86.94 mm/year.