The added value of system robustness analysis for flood risk management illustrated by a case on the IJssel River

Decision makers in fluvial flood risk management increasingly acknowledge that they have to prepare for extreme events. Flood risk is the most common basis on which to compare flood risk-reducing strategies. To take uncertainties into account the criteria of robustness and flexibility are advocated...

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Main Authors: M. J. P. Mens, F. Klijn
Format: Article
Language:English
Published: Copernicus Publications 2015-02-01
Series:Natural Hazards and Earth System Sciences
Online Access:http://www.nat-hazards-earth-syst-sci.net/15/213/2015/nhess-15-213-2015.pdf
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author M. J. P. Mens
F. Klijn
author_facet M. J. P. Mens
F. Klijn
author_sort M. J. P. Mens
collection DOAJ
description Decision makers in fluvial flood risk management increasingly acknowledge that they have to prepare for extreme events. Flood risk is the most common basis on which to compare flood risk-reducing strategies. To take uncertainties into account the criteria of robustness and flexibility are advocated as well. This paper discusses the added value of robustness as an additional decision criterion compared to single-value flood risk only. We do so by quantifying flood risk and system robustness for alternative system configurations of the IJssel River valley in the Netherlands. We found that robustness analysis has added value in three respects: (1) it does not require assumptions on current and future flood probabilities, since flood consequences are shown as a function of discharge; (2) it shows the sensitivity of the system to varying discharges; and (3) it supports a discussion on the acceptability of flood damage. We conclude that robustness analysis is a valuable addition to flood risk analysis in support of long-term decision-making on flood risk management.
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spelling doaj.art-5872f935132d4e60924a8f58dab1faf82022-12-22T03:44:27ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812015-02-0115221322310.5194/nhess-15-213-2015The added value of system robustness analysis for flood risk management illustrated by a case on the IJssel RiverM. J. P. Mens0F. Klijn1Deltares, P.O. Box 177, 2600 MH Delft, the NetherlandsDeltares, P.O. Box 177, 2600 MH Delft, the NetherlandsDecision makers in fluvial flood risk management increasingly acknowledge that they have to prepare for extreme events. Flood risk is the most common basis on which to compare flood risk-reducing strategies. To take uncertainties into account the criteria of robustness and flexibility are advocated as well. This paper discusses the added value of robustness as an additional decision criterion compared to single-value flood risk only. We do so by quantifying flood risk and system robustness for alternative system configurations of the IJssel River valley in the Netherlands. We found that robustness analysis has added value in three respects: (1) it does not require assumptions on current and future flood probabilities, since flood consequences are shown as a function of discharge; (2) it shows the sensitivity of the system to varying discharges; and (3) it supports a discussion on the acceptability of flood damage. We conclude that robustness analysis is a valuable addition to flood risk analysis in support of long-term decision-making on flood risk management.http://www.nat-hazards-earth-syst-sci.net/15/213/2015/nhess-15-213-2015.pdf
spellingShingle M. J. P. Mens
F. Klijn
The added value of system robustness analysis for flood risk management illustrated by a case on the IJssel River
Natural Hazards and Earth System Sciences
title The added value of system robustness analysis for flood risk management illustrated by a case on the IJssel River
title_full The added value of system robustness analysis for flood risk management illustrated by a case on the IJssel River
title_fullStr The added value of system robustness analysis for flood risk management illustrated by a case on the IJssel River
title_full_unstemmed The added value of system robustness analysis for flood risk management illustrated by a case on the IJssel River
title_short The added value of system robustness analysis for flood risk management illustrated by a case on the IJssel River
title_sort added value of system robustness analysis for flood risk management illustrated by a case on the ijssel river
url http://www.nat-hazards-earth-syst-sci.net/15/213/2015/nhess-15-213-2015.pdf
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