Hydrochemical profiles were used to create a spatiotemporal hydrochemical analysis of a watercourse. This method is based on the correlation between the concentration of pollutants and the intensity of water flow in the watercourse. It is a method that allows for an analysis of qualitative and quantitative changes of pollutants occurring in the watercourse. The paper describes the steps to be followed to obtain hydrochemical profiles of the watercourse. The function of time has been introduced in order to illustrate the analysis in a three-dimensional way. All of the profiles are shown in one graph, where qualitative and quantitative changes are visible within water levels at a specified time interval. The results are presented as graphs allowing for the classification of the course due to water quality, showing the hydrochemical shell in the watercourse during the year.