Since 1979, in the Weser river basin district the water quality has been analyzed with a monitoring programme that has evolved over the years according to the latest requirements. This monitoring programme is concentrating on the main river Weser, its two headwaters and the main tributary river, the Aller. At 9 monitoring stations, which are representative for their river stretch, physical parameter are measured continuously and quasi continuously 14-days-mixed samples are analyzed. Over the years long data sequences have resulted which facilitate an assessment of the measured parameter with respect to their chronological development.

Main focus of the RBC Weser is not only on the Weser and its headwaters, but also more intensive in the entire river basin. Therefore, selected parameter at almost 100 sample stations were analyzed and presented according to the spirit of the EU-Water Framework Directive.

Using the following interlinkages you will find information about monitoring data until 2010. For a number of substances information on their usage and origin and an assessment of the analyses is available. The following parameter have been investigated:

Continously measured parameter

Nutrients

Chloride and other ions

Metals

Organic pollutants