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Theses

L'approche hydrogéomorphologique : pratiques, valorisations et développement d'une méthode de cartographie des zones inondables

Abstract : Flood hazard knowledge is increasingly becoming critical in flood risk management. The hydrogeomorphological mapping emerged in France, aiming to provide authorities with floodplain cartography. That naturalistic approach, developed in the 1980 decade, spread through the South of France. Today, the hydrogeomorphological mapping is widely recognized for its reliability. Though, it stagnates in terms of applications and development in new territories. The analysis of 282 PPRI (Flood Risk Prevention Plans) was performed in order to assess the extent of usage of hydrogeomorphological mapping in flood risk regulatory framework. That analysis highlighted how hydrogeomorphological mapping is used in the French flood risk management. NMFP (Numerical Model of Floodplain) production on French and Canadian rivers showed how the hydrogeomorphological interpretation could be adaptable to different physical contexts. It also answers to the European “Floods Directive” that asks for an extreme flood mapping. The cartographic evolution proposed in this research particularly includes AZI (Floodplains maps) legend simplification. It also makes proposals on a flood risk “positive mapping” of. Through cartographic, regulatory and geomorphologic aspects, this research finally proposes a development model applicable to hydrogeomorphological mapping.
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Antonin Montané. L'approche hydrogéomorphologique : pratiques, valorisations et développement d'une méthode de cartographie des zones inondables. Géographie. Université Paul Valéry - Montpellier III, 2014. Français. ⟨NNT : 2014MON30014⟩. ⟨tel-01077926⟩

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