Figure 4 . (a) Daily time series of discharge, when calibrating the model with six different variables. (b) Time series of the six variables when calibrating the model with discharge observations only (discharge, water level, flood extent and soil moisture are at a daily time step, while TWS and ET are at a monthly time step). KGEiniis the mean KGE of initial runs, KGEcal is the mean KGE of calibrated runs, evaluated for the same period of calibration,KGEeval is the mean KGE of calibrated runs, evaluated for a different period than calibration. Time series for all variables by calibrating the model with all setups is presented in supporting information (Figure S1).