PERBANDINGAN METODE MOCK DAN NRECA UNTUK PENGALIHRAGAMAN HUJAN KE ALIRAN

Abstract

The transformation rainfall into runoff with MOCK Method and NRECA have been applied in Sub Catchment Area of Reservoir Pacal Sengaten. Being compared to NRECA, MOCK Method gave better performance with the calibration values of 0.11, -0.01 and 0.76 for RMSE, ME and R² respectively. While the averaged values of the validation of models were 0,13; 0,05 and 0,6 for RMSE, ME and R² respectively. The resulted optimal value of calibration parameter (cathment characteristic) of model were landuse (m) about 20% within the range of 20%–50%, infiltration coefficient (i) 0,55 within the range 0–1, factor of recession of groundwater (k) was 0,99 of the range 0–1