Flood risk assessment – Practices in flood prone Swedish municipalities

Norén, Viveca; Hedelin, Beatrice; Nyberg, Lars; Bishop, Kevin

doi:10.1016/j.ijdrr.2016.07.003

Cited by 35 publications

(21 citation statements)

References 25 publications

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“…These factors have also been identified, in our study, as challenges to conducting RVAs. The same thing is true for lack of knowledge and competence, especially technical knowledge concerning RVA methods, which is also noted by several other studies performed on the local level in various contexts and countries (Eriksson, 2016;Malalgoda and Amaratunga 2015;Ferrier and Haque 2003;King 2008;Kjellgren 2013;Nor en et al 2016). Similarly, these local-level studies often also note that lack of time and resources are factors that hamper the success of local-level RVAs, creating a need for simpler, more well-adapted methods, and increased external support.…”

Section: Complementing Views From Other Contexts On Challenges To Rvassupporting

confidence: 52%

Understanding practical challenges to risk and vulnerability assessments: the case of Swedish municipalities

Cedergren

Swaling

Hassel

et al. 2018

Journal of Risk Research

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Assessing risks and vulnerabilities in the multifaceted context of a municipality is challenging. There is a plethora of methods and tools to support this task. However, to achieve successful outcomes from Risk and Vulnerability Assessments (RVAs), merely applying theoretically and technically rigorous methods is far from enough; the question of how a method is implemented in a practical context is crucial for reaching intended outcomes. In this paper, we broaden the scope, from a strict consideration of technical and methodological matters, to a presentation of the more elusive challenges in accomplishing RVAs that are actually useful in a local context. We conduct and contrast two independent studies that were aimed at identifying general challenges in achieving a successful RVA process in Swedish municipalities. Based on the findings, we argue that there is a need for a considerably increased focus on municipal practices and on the implementation of methods in the practical context. Knowledge and understanding of such practical challenges are pivotal for efforts aimed at both developing methods for RVA and improving the entire RVA process.

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Section: Complementing Views From Other Contexts On Challenges To Rvassupporting

confidence: 52%

Understanding practical challenges to risk and vulnerability assessments: the case of Swedish municipalities

Cedergren

Swaling

Hassel

et al. 2018

Journal of Risk Research

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“…Historical flood events were recorded in 1670, 1673, 1675, 1724, 1774, 1775, 1850, 1851, 1860, 1864, 1897, 1912and 1914(Vives and Peyraud 2009. More recently, high floods were recorded in 1960, 1970, 1975, 1991, 2004and 2016(Vives and Peyraud 2009.…”

Section: Study Areamentioning

confidence: 99%

Identification of elements exposed to flood hazard in a section of Trotus River, Romania

Țîncu

Zêzere

Lazăr

2018

Geomatics, Natural Hazards and Risk

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The purpose of this study is to achieve flood hazard map in terms of limited data and identify the elements exposed to the hazard of floods produced by Trotus¸River in section belonging to the commune of Ghimes-F aget, Romania. In order to identify the elements exposed to flood hazard, a first step was to determine the potential depth of water in flood conditions, using three bands of flooding for 10, 100 and 1000 years return period and the digital elevation model. In a second step, we elaborated the hazard map and hazard classification according to the Swiss method of hazard assessment, then the thematic layers with buildings and infrastructure were vectorized from orthophotoplan and inventoried in the field, the land use map was extracted from the Corine Land Cover 2012 data set. The maps of the exposed elements have been achieved based on thematic layers and hazard map. The results of this study provide information about the degree of flood hazard and about the elements exposed to hazard, which allows us to identify vulnerability and quantify the risk in a new study and also support the population and authorities to develop prevention and intervention measures in case of flood hazard.

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“…The latter step is crucial, as it institutionalizes an ongoing paradigm shift from flood protection towards flood risk management (Bubeck et al 2016;Roos et al 2017). Although the Article 6.5d of the FD suggests drawing upon additional information regarding the impact of sediments and debris floods in the preparation of the flood maps (EU 2007), after the first implementation cycle ended in 2015, several shortcomings and weaknesses were evident, including a lack of theoretical risk management knowledge (Kallis and Butler 2001;EU 2015;Norén et al 2016), inadequacy in considering hydromorphological alterations and sediments impact on flood risk management (Nones et al 2017), incomplete understanding of cascading effects of floods (Pescaroli and Nones 2016). Such shortcomings need to be addressed in the short term because, by 2021, the next flood risk management plans (FRMP) should be produced, containing information on progress achieved towards the Directive goals (EU 2007).…”

Section: Introductionmentioning

confidence: 99%

Dealing with sediment transport in flood risk management

Nones

2019

Acta Geophys.

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Flooding events are rising across European watercourses because of changing climatic conditions and anthropogenic pressure. To deal with these events, the European Floods Directive requires the development of flood risk management plans regularly updated every 6 years, where areas affected by flood risk and relative management strategies should be identified. Along the Directive, sediment transport and morphological changes in freshwater environments like rivers are only marginally considered, leading to a possibly wrong estimate of the impact of floods in the case of watercourses in which sediment transport represents a fundamental component. Using the Secchia River in Italy as a case study, the paper compares two numerical simulations performed with the freeware iRIC suite, imposing the same boundary conditions but comparing fixed and mobile bed. The obtained results pinpoint the importance of considering sediment transport in drawing flooding scenarios for alluvial sandy rivers. As suggested by this example, for the incoming revisions of the flood risk management plans, forecasted by 2021, water managers should account for the dynamic behaviour of surface watercourses, considering sediments not only as a driver of pollutants but also as a key aspect that shapes the environment and should be considered in modelling future scenarios and drawing associated management strategies.

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Flood risk assessment – Practices in flood prone Swedish municipalities

Cited by 35 publications

References 25 publications

Understanding practical challenges to risk and vulnerability assessments: the case of Swedish municipalities

Understanding practical challenges to risk and vulnerability assessments: the case of Swedish municipalities

Identification of elements exposed to flood hazard in a section of Trotus River, Romania

Dealing with sediment transport in flood risk management

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