Prediksi Inflow Waduk Berdasarkan Outflow Menggunakan Persamaan Kontinuitas

Hydrograph inflow of reservoir is required to determine the operation of reservoir it self. In case of the data of outflow not available, the method to get it, so the prediction of it inflow’s data can be carried out by means of using the outflow’s data and manipulating with “anti routing” and supported by hydrologic routing method. The Puls formula, after some modification, then can be used as calculation. Finally the research show the result as follow: - Percentage of accuracy is not uniform especially for peak discharge, time concentration and time base with vary around 20% - Formula in condition without rain fall, Lag time: -0,659 + 0,808 Tc-0,156 Qp and T Inflow : 0,1806 Tb Outflow + 2,0234. - Formula during rainfall, Lag time: -0,339+0,4813 Tc-0,0164 Qp and Tb Inflow : 0,6697 Tb Outflow – 7,5701