Analisis Analisis Aliran Dasar (Base Flow) Menggunakan Metode Kille Pada 8 DAS di Wilayah UPT PSDA Madura
Keywords:
Baseflow, Kille method, Flow Duration Curve, Madura, HydroofficeAbstract
Baseflow is one of the critical components of the watershed that influences water availability during the dry season. The water availability information used for water resources management purposes. The aims of this research were: (1) calibrating Kille method parameters, (2) visualization Flow Duration Curve (FDC) at watersheds in UPT PSDA Madura. The methodology consists of: (1) inventory of rainfall and daily discharge data, (2) data preparation, (3) calibration, (4) visualization using FDC. The calibration processes using daily discharge data for each watershed. First, excel data was prepared for Kille 3.1 module on the top of Hydrooffice software package. The results show obtained values for the coefficient of determination (R2) = 0,97 (at Blega-Telok), 0,98 (at Kemuning), 0,92 (at Klampis), 0,94 (at Klampok-Ambuten), 0,98 (at Nipah-Tabanan), 0,91 (at Samiran-Propo, 0,97 (at Sampang), 0,97 (at Saroka-Lenteng), 0,96. The result of FDC visualization shows that the measured discharge line and both models (linear regression and exponential regression) almost coincide or approach the measured discharge line. This indicates that the kille method is good in modeling the base flow during the dry season.
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