Ahilan, S, Guan, M, Wright, N et al. (1 more author) (2015) Natural flood risk management in urban rivers. In: National Hydrology Conference 2015. Irish National Hydrology Conference 2015, 17 Nov 2015, Athlone, co. Westmeath, Ireland.
Abstract
A study of floodplain sedimentation on a recently restored floodplain is presented. This study uses a two-dimensional hydro-morphodynamic model for the prediction of flow and suspended sediment dynamics in the downstream section of Johnson Creek, the East Lents reach, where the bank of the river has been reconfigured to reconnect to a restored floodplain on a 0.28 km2 (28-ha) site. The event based simulation scenarios (10, 50, 100, and 500 year) are considered in this study. Simulation results showed that the restored floodplain attenuates the upstream flood peak by up to 25% at the downstream. Results also indicated that ~ 20-30% of sediment from the upstream flow is deposited on the East Lents floodplain, this sediment trapping process at the East Lents flood basin considerably reduces the overall sediment loading into the main Willamette River.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | Floodplain; Green infrastructure; Grey infrastructure; Urbanisation; Sediment dynamics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds) |
Funding Information: | Funder Grant number EPSRC RA1596 |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Dec 2015 10:15 |
Last Modified: | 16 Dec 2015 10:22 |
Status: | Published |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:92855 |