Fluvial morphodynamics and sediment contamination: report of ongoing research on the July flood 2021

 

Univ.-Prof. Dr. rer. nat. Frank Lehmkuhl, Chair of Physical Geography and Geoecology, Institute of Geography, RWTH Aachen University

Erosion in the Inden opencast mine Drone images from 16.7.2021 Copyright: © IWW Erosion in the Inden opencast mine Drone images from 16.7.2021

Extreme flood events such as the July flood of 2021 not only change the morphology of a watercourse, but also erode, transport and accumulate sediment-bound pollutants. Future renaturation and other hydraulic engineering measures should take into account the morphodynamics and development history of river floodplains as well as the potential displacement of pollutants from contaminated sites during extreme flood events.
The lecture concludes with a first analysis of the enormous erosion efforts of the New Inde River into the Inden open pit mine. More than 500,000 m³ of sediments were relocated within a very short time. Initial information on this can be found in the research magazine RWTH-Themen 2021: Hochwasser - Beiträge zu Risiken, Folgen und Vorsorge.

(Lehmkuhl, F. / Weber, A. / Schulte, P. / Wolf, S. & Schüttrumpf, H.)

 
 

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