Title
Bank erosion in regulated navigable rivers: Towards a process-based model of bank retreat
Author
Duró, G. (Witteveen+Bos)
Crosato, A. (IHE Delft Institute for Water Education)
Uijttewaal, W.S.J. (TU Delft Environmental Fluid Mechanics)
Contributor
Uijttewaal, W. (editor)
Franca, M.J. (editor)
Valero, D. (editor)
Chavarrias, V. (editor)
Arbos, C.Y. (editor)
Schielen, R. (editor)
Crosato, A. (editor)
Date
2020
Abstract
After the European Water Framework Directive, riverbanks in several countries had the protections removed to improve the water quality and the river ecosystem. Particularly, the Meuse River currently has several kilometres of freely eroding banks, which may have consequences for other river functions such as navigation and flood conveyance. The understanding, quantification and prediction of the morphological evolution of restored banks is thus relevant to manage the integrity of all river functions and improve future restoration practices. This work analyses the results of a recently developed model to estimate bank retreat in regulated waterways and compares them with measured profiles. The model essentially accounts for the major drivers of erosion, i.e., primary and secondary ship waves, considers homogenous cohesive banks, and computes erosion rates through a Partheniades-type of formulation. The results show a good qualitative and quantitative agreement with measurements. Erosion rates are yet not accurate with the current approach, for which future work will focus on improving the temporal representation through the inclusion of other factors and processes affecting erosion rates. These are, for instance, statistically representative time series of ship waves, currents during floods, and elements affecting erosion processes such as mass failures, slump-block dynamics and vegetation.
To reference this document use:
http://resolver.tudelft.nl/uuid:57078665-be5d-4b7b-8954-782da7966d75
Publisher
CRC Press / Balkema - Taylor & Francis Group, London
Embargo date
2021-02-27
ISBN
978-0-367-62773-7
Source
River Flow 2020: Proceedings of the 10th Conference on Fluvial Hydraulics (1st)
Event
River Flow 2020, 2020-07-07 → 2020-07-10, Delft, Netherlands
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2020 G. Duró, A. Crosato, W.S.J. Uijttewaal