Z badań nad modelowaniem i prognozowaniem wskaźników zanieczyszczenia Odry

This paper is an presenting of the trial of application the selected mathematical methods for modelling and predicting the water quality parameters of Odra river with analysis of seasonality and regression. The main following parameters ware modelled: water temperature, concentration of dissolved oxygen, biochemical oxygen demand - BOD5, chemical oxygen demand, concentrations of phosphates and nitrates, chlorophyll "a" and water flow. The monthly averages (of five hydrological years range) of mentioned parameters were calculated for analysing. Modelling and estimating the predictions of the water quality parameters of Odra river were performed with using the trend and regression model with seasonality analysis. The results point the stability of presented method at predicting the water quality parameters. It seems that mathematical methods should be mare often applied in Polish State Environment Monitoring to prepare reports and assessments.