Sensitivity Analysis in Parameter Calibration of the WEAP Model for Integrated Water Resources Management in Unda Watershed

WEAP or Water Evaluation and Planning is a model that used to simulate integrated water resources management. To get able represent the real condition, calibration process needed. This study aims determine optimum parameter value through sensitivity analysis obtain reliability during process. Based on for several parameters of model, it found some have similar characteristics. Change in Z1, DWC, RRF, RZC directly proportional RMSE value, greater obtained. Whereas change Z2, DC, SWC, PFD inversely larger smaller After was carried out, efficiency coefficient Nash Sutcliffe obtained 0.512 which satisfactory. The Index Agreement correlation also show good results with values 0.848 0.743. From these results, can be concluded Unda watershed