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Amaratunga, D, Malalgoda, C I and Keraminiyage, K (2018) Contextualising mainstreaming of disaster resilience concepts in the construction process. International Journal of Disaster Resilience in the Built Environment, 9(04–05), 348–67.

Bhattacharya-Mis, N, Lamond, J, Montz, B, Kreibich, H, Wilkinson, S, Chan, F and Proverbs, D (2018) Flood risk to commercial property. International Journal of Disaster Resilience in the Built Environment, 9(04–05), 385–401.

Chavoshy, A, Amini Hosseini, K and Hosseini, M (2018) Resiliency cube. International Journal of Disaster Resilience in the Built Environment, 9(04–05), 317–32.

Chiba, Y, Prabhakar, S, Islam, M A and Akber, M A (2018) Priority practices for addressing non-economic loss and damages caused by cyclones in Bangladesh. International Journal of Disaster Resilience in the Built Environment, 9(04–05), 333–47.

Habermann, N and Hedel, R (2018) Damage functions for transport infrastructure. International Journal of Disaster Resilience in the Built Environment, 9(04–05), 420–34.

Meyer, M A, Hendricks, M, Newman, G D, Masterson, J H, Cooper, J T, Sansom, G, Gharaibeh, N, Horney, J, Berke, P, van Zandt, S and Cousins, T (2018) Participatory action research: tools for disaster resilience education. International Journal of Disaster Resilience in the Built Environment, 9(04–05), 402–19.

Mohtat, N and Zargar, A H I (2018) Sustainability evaluation of post-disaster housing reconstruction after 55 years: Rudak village, Iran. International Journal of Disaster Resilience in the Built Environment, 9(04–05), 294–316.

Perera, S, Adeniyi, O, Babatunde, S O and Ginige, K (2018) Mapping built environment professionals’ educational needs to international policy frameworks for disaster risk reduction – community stakeholder perspective. International Journal of Disaster Resilience in the Built Environment, 9(04–05), 368–84.

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, 9(04–05), 435–56.

• Type: Journal Article
• Keywords: Rainfall; Flooding; Damage assessment; Flood discharge;
• ISBN/ISSN: 1759-5908
• URL: https://doi.org/10.1108/IJDRBE-09-2017-0051
• Abstract:
  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. 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. This paper developed a simple and effective hydrological method with minimum inputs. It also provides an example on collating available but scattered resources and traditional method to quantitatively assess flood discharges of a rural catchment in Australia. Flood discharges at three catchment outlets along the Left-Hand Branch Road in the Lockyer Valley Region during both 2011 and 2013 Queensland flood events are estimated for the first time. The findings highlight the impact of flood discharges and flooded period on floodway failures. The current research is based on a selected case study area in Australia. However, similar challenges are expected all across the world, due to the scarcity of rainfall and flood measurement gauges. Floodway designers can apply similar framework to estimate the flood discharges instead of current practice of trial and error process. This will provide more scientific and reliable estimation and assessment process. One of the social impacts identified in the broader research is the community outrages and disagreement between floodway design engineers and the community. Following the developed framework in the manuscript, design engineers will be able to justify their assumptions and design work. The paper presents a novel framework on collating different and scattered information towards estimating flood discharges in rural areas. The manuscript presents the first insights on estimated flood discharges in the selected case study area during the 2011 and 2013 Queensland flood events. This will enable further research to be performed in a quantitative manner rather than the present approach of qualitative manner.