Mitigation of Channel Bed Erosion through Floodplain Lowering and Nourishments

Mitigation of Channel Bed Erosion through Floodplain Lowering and Nourishments

Ylla Arbos, C. (TU Delft Rivers, Ports, Waterways and Dredging Engineering)
Schielen, R.M.J. (TU Delft Rivers, Ports, Waterways and Dredging Engineering; Rijkswaterstaat)
van Vuren, Saskia (Rijkswaterstaat)
Snoek, Yvo (Rijkswaterstaat)
Blom, A. (TU Delft Rivers, Ports, Waterways and Dredging Engineering)

2024

Channel adjustment in engineered rivers is often associated with channel bed incision (e.g., Chowdhury et al., 2023, Czapiga et al., 2022a, 2022b, Ylla Arbós et al., 2021). Channel bed incision reduces the stability of in-river structures, exposes river-crossing cables and pipelines, and the spatial variability of channel bed incision due to less erodible reaches creates shipping bottlenecks.
Various measures have been implemented to cope with these issues. They range from sediment nourishments to erosion control structures (e.g., Habersack and Piégay, 2007). Our objective is to assess the potential of floodplain lowering and sediment nourishments in mitigating large-scale channel bed incision in engineered rivers affected by climate change, considering a spatial scale of hundreds of kilometres. Our domain of interest is the Rhine River between Bonn, Germany, to Gorinchem, Netherlands. This reach has been extensively channelized during the 18th-20th centuries for improved navigation and flood protection (e.g., Ylla Arbós et al., 2021).

channel bed erosion
erosion mitigation
nourishments
numerical modelling

http://resolver.tudelft.nl/uuid:a6969f0a-c0b9-43f3-baec-4f40b4fa8a19

NCR DAYS 2024, 2024-02-28 → 2024-02-29, Gaia, Wageningen University & Research campus, Wageningen, Netherlands

Institutional Repository

abstract

© 2024 C. Ylla Arbos, R.M.J. Schielen, Saskia van Vuren, Yvo Snoek, A. Blom