ICPR – International Commission for the Protection of the Rhine

Technical reports

This report provides an overview of chloride concentrations and dischargers in the Rhine catchment (2018). The reason for this were low discharges in the Rhine catchment in 2018, which were related to high chloride concentrations.

The report is only available in German, French…

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This report contains a summary of the method and the results of the calculations carried out with the tool FloRiAn (Flood Risk Analysis) to assess the change or reduction of the flood risk on the Rhine mainstream as a result of measures taken since 2015.

The report is only…

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The water quality of the Rhine and its tributaries is constantly monitored as part of the surveillance monitoring at the international monitoring sites. For the identification of the development of the Rhine water quality, these data are regularly compiled, validated and…

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The synthesis report presents the results of the biological inventories within the 3rd monitoring cycle (2018/2019) within the framework of the third internationally coordinated river basin management plan for the international river basin district (IRBD) Rhine as well as the…

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Within the framework of the action programmes "Rhine" and "Rhine 2020" of the International Commission for the Protection of the Rhine (ICPR), comprehensive surveys of the Rhine fish fauna according to comparable criteria have been carried out along the entire length of the Rhine…

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Waterbirds are visible and good indicators of the ecological quality of their habitats, showing the general status and trends in the habitats they use. On average, during the winters 2015/16 to 2017/18, the Rhine Valley was home to over 1.1 million native waterbirds of 70…

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The species diversity and dominant species proportions of the macrozoobenthos (invertebrates living on the river bottom) is an indicator of water quality, and of the quantity and quality of habitat structures in a water body. The increasing establishment of thermophilic invasive…

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Diatoms are microscopic small single-celled algae. Due to their great species diversity, their widespread occurrence and their sensitivity concerning the physical-chemical characteristics of their habitat they are excellent bio-indicators. During 2018/2019, 340 species of benthic…

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