Quantitative assessment of flood discharges and floodway failures through cross-cultivation of advancement in knowledge and traditional practices

Wahalathantri, B, Lokuge, W, Karunasena, W and Setunge, S 2018, 'Quantitative assessment of flood discharges and floodway failures through cross-cultivation of advancement in knowledge and traditional practices', International Journal of Disaster Resilience in the Built Environment, vol. 9, no. 43589, pp. 435-456.


Document type: Journal Article
Collection: Journal Articles

Title Quantitative assessment of flood discharges and floodway failures through cross-cultivation of advancement in knowledge and traditional practices
Author(s) Wahalathantri, B
Lokuge, W
Karunasena, W
Setunge, S
Year 2018
Journal name International Journal of Disaster Resilience in the Built Environment
Volume number 9
Issue number 43589
Start page 435
End page 456
Total pages 22
Publisher Emerald Group
Abstract Purpose: The 2011 and 2013 Queensland, Australia flood events caused massive infrastructure damage for low-level stream crossings such as floodways and culverts in regional Queensland. Failures of newly built floodways during the 2013 Queensland flood event in the Lockyer Valley Regional Council area raised significant concerns with respect to floodway design practices adopted in Australia and attracted significant research interest to enhance the resilience of floodways. Review of existing floodway design guidelines indicates that floodway design process is closely related to hydraulic and hydrological aspects. However, conducting a hydrological analysis is a challenging in rural areas, mainly owing to information scarcity. Floodways in rural areas often require a simple and economical solution contrast to more detailed hydrological analysis approaches adopted in urbanised areas. This paper aims to identify and apply the rational method to estimate maximum flood discharges at selected floodway locations in the Lockyer Valley Regional Council area. The paper further attempts to provide the first insight of flood characteristics during the 2011 and 2013 Queensland flood events at three catchment outputs across the selected case study area. It also highlights modern day challenges for practising engineers and researchers when estimating flood characteristics in rural areas. The paper shows that cross-cultivation of advancement in engineering practices and traditional approaches can promote quantitative approaches when assessing floodway damage in regional areas. Design/methodology/approach: The research identifies limitations when assessing flood impact in rural regions in collaboration with experience from industry partners and authors themselves. The authors developed a framework to overcome those limitations arising from information scarcity to minimise the trial and error design approaches utilised in the current design practices for floodways. Findings: This pape
Subject Infrastructure Engineering and Asset Management
Keyword(s) Damage assessment
Flood discharge
Flooding
Rainfall
DOI - identifier 10.1108/IJDRBE-09-2017-0051
Copyright notice © 2018, Emerald Publishing Limited.
ISSN 1759-5908
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