Taking into account protective works in land-use planning for mountain torrential floods: state of the art of French practices

Abstract : In 1995, a law stated a common regulatory natural risk zoning for French municipalities through a land-use planning procedure called Risk Prevention Plan (PPR). In mountain valleys and especially within torrential watersheds, considering protective structures in those plans is an actual concern. Those protections do have an effect on phenomena and modify hazard and risk levels. This paper gives an overview on how torrential protective works are taken into account in present risk prevention plans. To carry out this study, 53 recent risk prevention plans over 11 French mountain departments were selected and analyzed through a common analysis grid. Torrential protection works are taken into account in more than one third of analyzed plans. Protections mostly considered are dikes, bank protections, check-dams and sediment traps. Modalities of integration of these structures vary from one plan to another, influencing both hazard and regulatory zoning. Results also show a wide range of practices between departments and even inside them. Conclusions brought out enhance knowledge about actual practices which were not sufficiently known so far. Findings and new additional recommendations will be included in a future PPR methodological guide exclusively suited for torrential context, which is currently still missing.
Type de document :
Communication dans un congrès
3 rd European Conference on Flood Risk Management Innovation Implementation Integration, Oct 2016, Lyon, France. 2016, 〈10.1051/e3sconf/20160712003〉
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https://hal-emse.ccsd.cnrs.fr/emse-01317396
Contributeur : Florent Breuil <>
Soumis le : mercredi 18 mai 2016 - 11:42:28
Dernière modification le : jeudi 28 septembre 2017 - 01:12:01

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Félix Philippe, Simon Carladous, Jean-Marc Tacnet, Philippe Bouvet. Taking into account protective works in land-use planning for mountain torrential floods: state of the art of French practices. 3 rd European Conference on Flood Risk Management Innovation Implementation Integration, Oct 2016, Lyon, France. 2016, 〈10.1051/e3sconf/20160712003〉. 〈emse-01317396〉

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