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Gestion collective des inondations. Peut-on tenir compte de l'avis de la population dans la phase d'évaluation économique a priori ?

Abstract : In France, the ex ante economic valuation of collective flood mitigation actions is defective unlike other countries like U.S.A. This is worrying in a perspective of optimal allocation of limited resources. When existing, this valuation does not take into account affected population's preferences. This lack goes against the recommendations of Aarhus Convention signed by France. This thesis aims at exploring the possible contribution of using contingent valuation in such a perspective. Two surveys were carried out in two different places of contrasted characteristics : in Yzeron catchment (perish-urban zone, small catchment, floods with fast dynamic, and strong human stakes) and in Le Mans city (urban zone, large catchment at the junction of the Sarthe and the Huisne rivers, floods with low dynamic, and weak human stakes). In the perspective of ex ante valuation of different levels of collective protection, those surveys required a communication tool allowing a lay-people oriented description of the effects of contingent scenarios on collective exposure to floods. Surveys results allow some critical analyses of methodological choices used (as the impact of local taxes as payment support on refusal rate) and shows a behaviour of surveyed people interpreted as an acceptability of flood risk beyond a certain level of collective protection. If it were confirmed, this conclusion would have direct impact on the necessity for practicing « ex ante» economic valuation of collective flood mitigation actions, moreover integrating explicitly the affected population's preferences.
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https://tel.archives-ouvertes.fr/tel-00420388
Contributor : Grelot Frédéric <>
Submitted on : Monday, September 28, 2009 - 6:08:11 PM
Last modification on : Friday, October 23, 2020 - 4:36:14 PM
Long-term archiving on: : Tuesday, June 15, 2010 - 8:39:23 PM

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Frédéric Grelot. Gestion collective des inondations. Peut-on tenir compte de l'avis de la population dans la phase d'évaluation économique a priori ?. Economies et finances. Ecole nationale supérieure d'arts et métiers - ENSAM, 2004. Français. ⟨tel-00420388⟩

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