Flood performance and degradation of channel-spanning instream woody barriers over time

Jones, D.A. and Wilson, C.A.M.E. ORCID: https://orcid.org/0000-0002-7128-590X 2025. Flood performance and degradation of channel-spanning instream woody barriers over time. Presented at: 12th International Conference on Fluvial Hydraulics, Liverpool, UK, 02-06 September 2024. Published in: Carnacina, I., Abdellatif, M., Andredaki, M., Cooper, J., Lumbroso, D. and Ruiz-Villanueva, V. eds. River Flow 2024. London: CRC Press, pp. 990-993. 10.1201/9781003475378-143

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Abstract

Natural flood management is fast becoming one of the preferred solutions to flooding by communities and local authorities in the UK because it enhances green spaces and is low cost in comparison with traditional solutions. However, there is scarcity of evidence on flood performance, lifespan, maintenance requirements and cost effectiveness of these assets. Engineered channel-spanning instream woody barriers were monitored in the Corvedale catchment, Shropshire (UK) to study their effects on flood performance over a five-year study period. Backwater rise was quantified for different barrier-channel profile combinations and was found to be a function of barrier design and channel profile siting; backwater rise was greater for woody barriers with a large vertical extent located in deeper incised cross-sections. High diameter log to stream width ratio was a key factor in barrier longevity, while the utilisation of many log with high log slenderness ratio led to a shorter lifespan.

Item Type:	Conference or Workshop Item (Lecture)
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Publisher:	CRC Press
ISBN:	9781003475378
Last Modified:	18 Dec 2025 12:00
URI:	https://orca.cardiff.ac.uk/id/eprint/183365

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