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231223s2009 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2009.171
|2 doi
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|a eng
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|a ten Veldhuis, J A E
|e verfasserin
|4 aut
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|a Fault tree analysis for urban flooding
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|c 2009
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 16.07.2009
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|a Date Revised 01.12.2018
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|a published: Print
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|a Citation Status MEDLINE
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|a Traditional methods to evaluate flood risk generally focus on heavy storm events as the principal cause of flooding. Conversely, fault tree analysis is a technique that aims at modelling all potential causes of flooding. It quantifies both overall flood probability and relative contributions of individual causes of flooding. This paper presents a fault model for urban flooding and an application to the case of Haarlem, a city of 147,000 inhabitants. Data from a complaint register, rainfall gauges and hydrodynamic model calculations are used to quantify probabilities of basic events in the fault tree. This results in a flood probability of 0.78/week for Haarlem. It is shown that gully pot blockages contribute to 79% of flood incidents, whereas storm events contribute only 5%. This implies that for this case more efficient gully pot cleaning is a more effective strategy to reduce flood probability than enlarging drainage system capacity. Whether this is also the most cost-effective strategy can only be decided after risk assessment has been complemented with a quantification of consequences of both types of events. To do this will be the next step in this study
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|a Journal Article
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|a Clemens, F H L R
|e verfasserin
|4 aut
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|a van Gelder, P H A J M
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 59(2009), 8 vom: 26., Seite 1621-9
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|u http://dx.doi.org/10.2166/wst.2009.171
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