Is flow velocity a significant parameter in flood damage modelling?

Kreibich, Heidi; Piroth, Klaus; Seifert, Isabel; Maiwald, Holger; Kunert, Uwe; Schwarz, Jochen; Merz, Bruno; Thieken, Annegret H.

doi:10.5194/nhess-9-1679-2009

Cited by 259 publications

(219 citation statements)

References 26 publications

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“…Flow velocity has influence on the building loss ratio and a small influence on absolute building losses. This is in line with the result by Kreibich et al [39] that the influences of flood velocity on the absolute building losses are weak. These findings are most likely due to the special flood situation in Can Tho city, with very low water depth, but very long (partly several months) flood durations.…”

Section: Identification Of Important Loss-determining Variablessupporting

confidence: 81%

Multi-Variate Analyses of Flood Loss in Can Tho City, Mekong Delta

Chinh

Gain

Dũng

et al. 2015

Water

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Floods in the Mekong delta are recurring events and cause substantial losses to the economy. Sea level rise and increasing precipitation during the wet season result in more frequent floods. For effective flood risk management, reliable losses and risk analyses are necessary. However, knowledge about damaging processes and robust assessments of flood losses in the Mekong delta are scarce. In order to fill this gap, we identify and quantify the effects of the most important variables determining flood losses in Can Tho city through multi-variate statistical analyses. Our analysis is limited to the losses of residential buildings and contents. Results reveal that under the specific flooding characteristics in the Mekong delta with relatively well-adapted households, long inundation durations and shallow water depths, inundation duration is more important than water depth for the resulting loss. However, also building and content values, floor space of buildings and building quality are important loss-determining variables. Human activities like undertaking precautionary measures also influence flood losses. The results are important for improving flood loss modelling and, consequently, flood risk assessments in the Mekong delta.

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Section: Identification Of Important Loss-determining Variablessupporting

confidence: 81%

Multi-Variate Analyses of Flood Loss in Can Tho City, Mekong Delta

Chinh

Gain

Dũng

et al. 2015

Water

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“…Different flood parameters are sometimes considered (Messner et al, 2006;Kreibich et al, 2009, Nadal et al, 2010, Elmer et al, 2010, although flood depth dominates the range of functions available.…”

Section: Introductionmentioning

confidence: 99%

A new approach to flood vulnerability assessment for historic buildings in England

Stephenson

D’Ayala

2014

Nat. Hazards Earth Syst. Sci.

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Abstract. The recent increase in frequency and severity of flooding in the UK has led to a shift in the perception of risk associated with flood hazards. This has extended to the conservation community, and the risks posed to historic structures that suffer from flooding are particularly concerning for those charged with preserving and maintaining such buildings. In order to fully appraise the risks in a manner appropriate to the complex issue of preservation, a new methodology is presented here that studies the nature of the vulnerability of such structures, and places it in the context of risk assessment, accounting for the vulnerable object and the subsequent exposure of that object to flood hazards. The testing of the methodology is carried out using three urban case studies and the results of the survey analysis provide guidance on the development of fragility curves for historic structures exposed to flooding. This occurs through appraisal of vulnerability indicators related to building form, structural and fabric integrity, and preservation of architectural and archaeological values. Key findings of the work include determining the applicability of these indicators to fragility analysis, and the determination of the relative vulnerability of the three case study sites.

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“…For instance, the economic hazard focused only on structural damages, while hazard to roads was neglected. Adding such additional indicators (i.e., damage to roads) would require adding other flood parameters into the economic hazard such as velocity [62]. In environmental hazard, other indicators such as the impact on uptake rate of soil can be incorporated alongside potential erosion and pollution.…”

Section: Discussionmentioning

confidence: 99%

Sustainability-Based Flood Hazard Mapping of the Swannanoa River Watershed

2017

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An integrated framework is presented for sustainability-based flood hazard mapping of the Swannanoa River watershed in the state of North Carolina, U.S. The framework uses a hydrologic model for rainfall-runoff transformation, a two-dimensional unsteady hydraulic model flood simulation and a GIS-based multi-criteria decision-making technique for flood hazard mapping. Economic, social, and environmental flood hazards are taken into account. The importance of each hazard is quantified through a survey to the experts. Utilizing the proposed framework, sustainability-based flood hazard mapping is performed for the 100-year design event. As a result, the overall flood hazard is provided in each geographic location. The sensitivity of the overall hazard with respect to the weights of the three hazard components were also investigated. While the conventional flood management approach is to assess the environmental impacts of mitigation measures after a set of feasible options are selected, the presented framework incorporates the environmental impacts into the analysis concurrently with the economic and social influences. Thereby, it provides a more sustainable perspective of flood management and can greatly help the decision makers to make better-informed decisions by clearly understanding the impacts of flooding on economy, society and environment.

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Is flow velocity a significant parameter in flood damage modelling?

Cited by 259 publications

References 26 publications

Multi-Variate Analyses of Flood Loss in Can Tho City, Mekong Delta

Multi-Variate Analyses of Flood Loss in Can Tho City, Mekong Delta

A new approach to flood vulnerability assessment for historic buildings in England

Sustainability-Based Flood Hazard Mapping of the Swannanoa River Watershed

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