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EVALUATION DES MESURES DE GESTION DU RISQUE INONDATION. APPLICATION AU CAS DES BASSES PLAINES DE L'AUDE

Abstract : Flood risk management has long exclusively focused on controlling flood hazard. Structural or soft hazard-related measures such as dikes, dams or catch basins often prevail over prevention. However, both the frequent failure of those structural measures and the increasing damage related to floods compelled practitioners to come up with holistic and multi-stakeholder alternative policies. Over the past fifteen years, public policies have aimed at introducing preventive measures such as land-use planning and vulnerability reduction. The Aude lowlands provide an insightful case study. This region is exposed to frequent and disastrous flooding. The 1999 flood disaster which brought heavy damage in the area emphasized the limits of the existing risk management framework. In the Aude lowlands, practitioners struggle to provide an effective solution to the flooding problem. For the past 40 years, there has been a series of projects which all failed to mitigate the occurrence of disasters. In this context, this research work aimed at assessing the present risk management frameworks. Such an assessment should serve as the basis for revisiting flood policies. The goal of this study was to evaluate the efficiency, pertinence and performance of the existing flood risk management frameworks through different approaches: risk assessments, cost-benefits analyses and perception studies. This evaluation dealt with large-scale and smaller-scale events. Structural measures and hazard-based policies still prevail. This restrictive viewpoint conflicts with the complexity of local territories and leaves little space for preventive actions. Lowland flood risk management should further deal with the complex political context shaped around many conflicts. Perspectives for improving flood risk management should focus on involving a larger range of stakeholders and measures with clearly-defined hazard-based objectives.
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https://tel.archives-ouvertes.fr/tel-00542397
Contributor : Stéphanie Defossez <>
Submitted on : Thursday, December 2, 2010 - 4:06:33 PM
Last modification on : Monday, November 30, 2020 - 9:52:13 AM
Long-term archiving on: : Thursday, March 3, 2011 - 2:57:35 AM

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Stéphanie Defossez. EVALUATION DES MESURES DE GESTION DU RISQUE INONDATION. APPLICATION AU CAS DES BASSES PLAINES DE L'AUDE. Géographie. Université Paul Valéry - Montpellier III, 2009. Français. ⟨NNT : 2009MON30073⟩. ⟨tel-00542397⟩

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