The Role Of Mamasa Watershed Towards Bakaru Power Plan Water Resources

Abstract Watershed has an important role on water resources uses in hydro power plan. Water resources of Bakaru Hydro Power Plan derived from Mamasa River. In order to find out Mamasa river flow can be calculated using rainfall data recorded in Mamasa river catchment area. In order to predict discharge in Mamasa River can be evaluated using rainfall data from Mamasa Watershed Recording Station and comparing to its topography condition. Rainfall data used in this study is the rainfall data of Mamasa station, Sumarorong Station, and Lembang Station. The role of Mamasa watershed in Bakaru Power Plan Water Resources can be calculated by using rainfall prediction and water discharge that would occur in Mamasa upstream. Rainfall prediction using time series method has been done in previous studies, and water discharge predictions using fuzzy method. Keywords: water resources, Hydro Power Plan, time series, fuzzy logic. The result of study show that in the year 2017 water discharge is 74.03 m3/sec, this value is lower than water discharge at year 1999 which 91.88m3/sec.