ICPR – International Commission for the Protection of the Rhine

229. Assessment of the modification of probability due to flood level reduction measures along the Rhine

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 report no. 229, 2015). The calculations were made for the development conditions of the Rhine in 1977 (= end of the modification of the Upper Rhine due to the construction of impoundments), 1995, 2005, 2010, 2020 and 2020plus (until about 2030) for the flood retentions available in each of these years. 1995 is the reference year for the ICPR Action Plan on Floods. Within the ICPR, the calculation results are used to analyse the flood risk.

An explanatory note on the analysis as well as a synthesis are included in the beginning of the report no. 229 and in its presentation.

Remark concerning the use of the results for other questions: The results presented are those of specific questions. With respect to other questions it must be checked in depth, whether these results, their method and informative value may be used for other applications (e.g. cost-benefit-analysis).



This report is available in German, French and Dutch.