New approaches to ex-post evaluation of risk reduction measures

Olfert, Alfred; Schanze, Jochen

doi:10.1201/9780203883020.ch137

Cited by 8 publications

(9 citation statements)

References 1 publication

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“…There are a number of flood preparedness measures that private households and businesses can undertake to reduce the consequences of potential floods, such as flood-adapted building use, elevation of the floor level, or the deployment of mobile flood barriers. Previous research in Europe demonstrated that such measures undertaken at the building level can considerably reduce flood damage and are cost effective (Bubeck et al, 2012a;Holub and Fuchs, 2008;Kreibich et al, 2005Kreibich et al, , 2011Kreibich et al, , 2012Olfert and Schanze, 2008;Poussin et al, 2012). Whether or not such findings are transferable to the Vietnamese context is unclear.…”

Section: Flood Preparednessmentioning

confidence: 99%

The 2011 flood event in the Mekong Delta: preparedness, response, damage and recovery of private households and small businesses

et al. 2016

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Floods frequently cause substantial economic and human losses, particularly in developing countries. For the development of sound flood risk management schemes that reduce flood consequences, detailed insights into the different components of the flood risk management cycle, such as preparedness, response, flood impact analyses and recovery, are needed. However, such detailed insights are often lacking: commonly, only (aggregated) data on direct flood damage are available. Other damage categories such as losses owing to the disruption of production processes are usually not considered, resulting in incomplete risk assessments and possibly inappropriate recommendations for risk management. In this paper, data from 858 face-to-face interviews among flood-prone households and small businesses in Can Tho city in the Vietnamese Mekong Delta are presented to gain better insights into the damage caused by the 2011 flood event and its management by households and businesses.

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Section: Flood Preparednessmentioning

confidence: 99%

The 2011 flood event in the Mekong Delta: preparedness, response, damage and recovery of private households and small businesses

et al. 2016

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“…Complementary to traditional flood protection, such integrated approaches also aim at reducing the potential consequences of floods, amongst others, by means of flood mitigation measures undertaken by private households, such as flood-adapted building use or the deployment of flood barriers. Previous research indicated that these measures are effective in reducing damage and are cost-efficient in many situations Olfert, 2008;Kreibich et al, 2011a). The cost-efficiency of damage mitigation measures at the household level has also been demonstrated for other natural hazards, such as torrents and snow avalanches (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Olfert, 2008). , for instance, surveyed 1248 flood-prone households along the Elbe and found that floodadapted building use, flood-adapted interior fitting and the installations of heating and electrical utilities in higher storeys reduced the mean damage ratio for buildings by 46 %, 53 % and 36 %, respectively.…”

Section: Effectiveness Of Flood Mitigation Measures: a Comparison Betmentioning

confidence: 99%

Long-term development and effectiveness of private flood mitigation measures: an analysis for the German part of the river Rhine

Bubeck

Botzen

Kreibich

et al. 2012

Nat. Hazards Earth Syst. Sci.

139

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Abstract. Flood mitigation measures implemented by private households have become an important component of contemporary integrated flood risk management in Germany and many other countries. Despite the growing responsibility of private households to contribute to flood damage reduction by means of private flood mitigation measures, knowledge on the long-term development of such measures, which indicates changes in vulnerability over time, and their effectiveness, is still scarce. To gain further insights into the longterm development, current implementation level and effectiveness of private flood mitigation measures, empirical data from 752 flood-prone households along the German part of the Rhine are presented. It is found that four types of flood mitigation measures developed gradually over time among flood-prone households, with severe floods being important triggers for an accelerated implementation. At present, still a large share of respondents has not implemented a single flood mitigation measure, despite the high exposure of the surveyed households to floods. The records of household's flood damage to contents and structure during two consecutive flood events with similar hazard characteristics in 1993 and 1995 show that an improved preparedness of the population led to substantially reduced damage during the latter event. Regarding the efficiency of contemporary integrated flood risk management, it is concluded that additional policies are required in order to further increase the level of preparedness of the flood-prone population. This especially concerns households in areas that are less frequently affected by flood events.

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“…However, there is some evidence that these measures are effective in reducing damage and are also often efficient (ICPR, 2002;Kreibich et al, 2005;2011b;Olfert, 2008;Holub and Fuchs, 2008). Some studies aim to quantify the damage reducing effect of different measures at the building level (Table 1).…”

Section: Damage Reducing Effectsmentioning

confidence: 99%

A review of damage-reducing measures to manage fluvial flood risks in a changing climate

Kreibich

Bubeck

Vliet

et al. 2015

Mitig Adapt Strateg Glob Change

151

114

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Damage due to floods has increased during the last few decades, and further increases are expected in several regions due to climate change and a possibly growing vulnerability. To address the projected increase in flood risk, a combination of structural and non-structural flood risk mitigation measures is considered as a promising adaptation strategy. Such a combination takes into account that flood defence systems may fail, and prepares for unexpected crisis situations via land-use planning and private flood damage reduction e.g. via building precautionary measures. Private measures like shielding with water shutters or sand bags, building fortification or safeguarding of hazardous substances are often voluntary; they demand self-dependent action by people or companies at risk. It is believed that these measures are especially effective in areas with frequent flood events and low flood water levels, but some types of measures showed a significant damagereducing effect also during extreme flood events. This overview presents information about different damage-reducing measures, their state of implementation and the damage reducing effects of such measures, particularly reporting results of the project "Climate proof flood risk management" of the Dutch Knowledge for Climate (KFC) program.

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New approaches to ex-post evaluation of risk reduction measures

Cited by 8 publications

References 1 publication

The 2011 flood event in the Mekong Delta: preparedness, response, damage and recovery of private households and small businesses

The 2011 flood event in the Mekong Delta: preparedness, response, damage and recovery of private households and small businesses

Long-term development and effectiveness of private flood mitigation measures: an analysis for the German part of the river Rhine

A review of damage-reducing measures to manage fluvial flood risks in a changing climate

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