ICPR – International Commission for the Protection of the Rhine

Technical reports


The objective of the Warning and Alarm Plan (WAP) is, to pass on reports on sudden pollutions with substances noxious to water in the Rhine catchment if the amount and concentration may detrimentally impact the water quality and/or biocoenosis of the Rhine and to warn the...

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Based on the report on the “Evidence of the effectiveness of measures aimed at reducing flood levels of the Rhine” (ICPR report no. 199, 2012) the ICPR has calculated the modified flood probability resulting from flood retention measures already implemented or planned (ICPR...

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The species composition, abundance and age structure of fish reflect the large-scale occurrence of habitat structures of importance for different life stages and the river continuity. Discharge modifications (impoundments, water intake, diversion) and thermal pollution also...

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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. All in all, more than 500 macrozoobenthos species were...

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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 2012/2013, 306 species of benthic...

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Aquatic macrophytes (aquatic plants) may be used to assess the substance pollution of rivers, but they also reflect interferences with the discharge regime and structural conditions in water bodies. Within the measurement programme 2012/2013, 49 sampling stations were analysed,...

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Plankton are mostly microscopic small organisms floating in the water. The major share of aquatic vegetation here consists of single-celled algae, the so-called phytoplankton. In 2012, within the Rhine monitoring programme ‘Biology’, the phytoplankton of the Rhine was analysed...

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The "Habitat Patch Connectivity along the Rhine" is part of the ICPR programme "Rhine 2020" for the sustainable development of the Rhine. In preparation of the planned success control, the state of projects and measures implemented or planned within the "Habitat Patch...

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The Rhine Chemistry monitoring programme was first drafted for the first river basin management plan, that is, the monitoring years 2007-2012.  Due to new insights, a more vast adaptation of the Rhine Chemistry monitoring programme was required for the second river basin...

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In order to appreciate new substances which might possibly be relevant in future, the ICPR decided to implement a special monitoring programme within the Chemistry monitoring programme for the Rhine for 2013. The aim is to detect new substances in the Rhine water by applying the...

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