Calibration of a continuous hydrologic simulation model in the urban Gowrie Creek catchment in Toowoomba, Australia

Toowoomba, Queensland, Australia In this study we derive loss model parameters suitable for use in the dynamic Australian Representative Basin Model (ARBM) through calibration of a continuous simulation hydrologic model. We compare derived to those published literature, and our results highlight need develop database calibrated urban catchments. The development design storms flood modelling commonly uses initial loss/continuous estimate conversion rainfall runoff. This model, when applied pervious areas, that have been gauged rural These same are often component ungauged catchments with minimal understanding resulting impact on research approach calibrate ARBM built into hydrological software XPRAFTS. Through two-stage approach, offered satisfactory fit (Nash Sutcliffe Efficiency > 0.5) 9 11 selected storm events, seven events exceeding Nash 0.75. Events used calibration/validation included peak flows as low m3/s high 600 m3/s. Developing these offers new insights suitability an catchment regional provides alternative already available literature which were found overestimate flow frequent events.