The Rhine Catchment: A Review of Sediment-Related Knowledge, Monitoring, and a Future Research Perspective

Author:

Krapesch Michael12ORCID,Klösch Mario1ORCID,ten Brinke Wilfried3,Habersack Helmut1ORCID

Affiliation:

1. Institute of Hydraulic Engineering and River Research, Department of Water, Atmosphere and Environment, University of Natural Resources and Life Sciences, 1200 Vienna, Austria

2. Christian Doppler Laboratory for Sediment Research and Management, 1200 Vienna, Austria

3. Blueland Consultancy, 3512 LS Utrecht, The Netherlands

Abstract

The Rhine River is affected by major human interventions affecting its morphology and sediment regime, which have severely changed its flow and sediment transport. While channelization has increased the sediment transport capacity in the free-flowing sections, the sediment retention behind dams has caused a bedload deficit downstream and has additionally intensified riverbed erosion. The resulting consequences range from the exposure of less erodible sediment layers that pose obstacles for navigation, to the scouring of infrastructure, the lowering of groundwater levels, and multiple negative ecological consequences. To optimize the efficiency of countermeasures, a coherent overview of all sediment-related activities and the state of knowledge on the Rhine catchment is required. That is why the present study aims to give a catchment-wide overview in this regard, identify knowledge gaps and proposing a future research programme. The methodological approach includes a comprehensive literature review and online interviews with experts from six riparian countries working in the fields of sediment research and management. Based on our investigations, we have derived several research topics, each consisting of research questions. Three project ideas were defined that should primarily be realized: (i) the influence of climate change and land use change on the sediment regime; (ii) alteration and improvement of the sediment balance and continuity, sediment transport, and morphology; and (iii) national and bilateral projects on sediment transport processes and management.

Funder

International Commission for the Hydrology of the Rhine Basin

Publisher

MDPI AG

Reference136 articles.

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2. Das “Christian Doppler Labor für Sedimentforschung und -management”: Anwendungsorientierte Grundlagenforschung und Herausforderungen für eine nachhaltige Wasserkraft und Schifffahrt;Hauer;Osterr. Wasser Abfallwirtsch.,2019

3. Klösch, M., Ten Brinke, W., Krapesch, M., and Habersack, H. (2021). Sediment Management in the Rhine Catchment: Inventory of Knowledge, Research and Monitoring, and an Advice on Future Sediment Research, International Commission for the Hydrology of the Rhine Basin. Report No I-27 of the CHR.

4. Review: The International Sediment Initiative case studies of sediment problems in river basins and their management;Liu;Int. J. Sediment Res.,2018

5. Walling, D.E. (2009). UNESCO World Water Assessment Programme, United Nations Educational, Scientific and Cultural Organization.

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