Modelling in-stream temperature and dissolved oxygen at sub-daily time steps: An application to the River Kennet, UK

► The QUESTOR model has been applied to the River Kennet. ► Sub-daily temperature and Dissolved oxygen concentrations have been modelled. ► The model was driven by sub-daily data for these variables. ► A heating term was required to fit the observed diurnal temperature. ► Primary production was required to fit the observed dissolved oxygen concentrations.