A Comparative Evaluation of Conceptual Rainfall–Runoff Models for a Catchment in Victoria Australia Using eWater Source

Hydrological modelling at a catchment scale was conducted to investigate the impact of climate change and land-use individually in combination with available streamflow Painkalac using an eWater Source hydrological model. This study compares performance three inbuilt conceptual models within Source, such as Australian water balance model (AWBM), Sacramento GR4J for simulation. The three-model predicted by bivariate statistics (Nash–Sutcliff efficiency) univariate (mean, standard deviation) evaluate efficiency runoff predictions. Potential evapotranspiration (PET) data, daily rainfall data observed measured from this are major inputs these models. These were calibrated validated eight objective functions while further comparisons made Nash–Sutcliffe (NSE) log NSE bias penalty. split into sections. Two-thirds used calibration remaining one-third validation Based on results, it that is more suitable respect prediction computational compared AWBM Further, change, combined scenarios (land-use change) evaluated results suggest higher year 2065 will result approximately 45.67% less reservoir. In addition, resulted 42.26% flow produce 48.06% under existing conditions.