The map shows the stations for which continuous oxygen data is published.

Oxygen levels can affect fish habitats and several important chemical and microbiological reactions related to nutrients and organic matter. It is therefore an important parameter to consider when assessing the chemical and biological status of a water body.

National Monitoring Programme for loads of substances in Swiss watercourses (NAWA FRACHT)

The annual graph of other data collected on a continuous basis is available as a PDF. 

All data collected as part of NAWA FRACHT are available at Eawag.