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Probability-weighted hazard maps for comparing different flood risk management strategies: a case study
School of Geographical Sciences, University of Bristol, University Road, Bristol, BS8 1SS, UK .ORCID iD: 0000-0002-8180-4996
2009 (English)In: Natural Hazards, ISSN 0921-030X, E-ISSN 1573-0840, Vol. 50, no 3, 479-496 p.Article in journal (Refereed) Published
Abstract [en]

The study proposes an original methodology for producing probability-weighted hazard maps based on an ensemble of numerical simulations. These maps enable one to compare different strategies for flood risk management. The methodology was applied over a 270-km2 flood-prone area close to the left levee system of a 28-km reach of the river Reno (Northern Central Italy). This reach is characterised by the presence of a weir that allows controlled flooding of a large flood-prone area during major events. The proposed probability-weighted hazard maps can be used to evaluate how a structural measure such as the mentioned weir alters the spatial variability of flood hazard in the study area. This article shows an application by constructing two different flood hazard maps: a first one which neglects the presence of the weir using a regular levee system instead, and a second one that reflects the actual geometry with the weir. Flood hazard maps were generated by combining the results of several inundation scenarios, simulated by coupling 1D- and 2D-hydrodynamic models.

Place, publisher, year, edition, pages
2009. Vol. 50, no 3, 479-496 p.
National Category
Oceanography, Hydrology, Water Resources
Identifiers
URN: urn:nbn:se:uu:diva-219806DOI: 10.1007/s11069-009-9355-6OAI: oai:DiVA.org:uu-219806DiVA: diva2:703204
Available from: 2014-03-05 Created: 2014-03-05 Last updated: 2017-12-05Bibliographically approved

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Di Baldassarre, Giuliano

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