La place de l'hydrogéomorphologie dans les études d'inondation en France méditerranéenne / The contribution of hydrogeomorphology in flood hazard assessment: a review of the situation in southern France

Abstract

La place de l'hydrogéomorphologie dans les études d'inondation en France méditerranéenne / The contribution of hydrogeomorphology in flood hazard assessment: a review of the situation in southern France

A spatial and integrated flood risk diagnosis

“…Streams can be characterized by the existence of three river beds: minor bed, middle bed and major bed. Minor bed is constantly occupied by water (Bravard and Petit, 1997;Garry et al, 2002), with some exceptions, as in the case of Wadi (Ballais, 1995; 1,100 1,000 900 800 700 600 500 400 300 200 100 0 Veyret, 1998;Garry et al, 2002). Determining the flood-prone area for this study was therefore done by determining the boundaries of major geomorphological bed (Ballais, 2006).…”

“…The conceptual bases of the hydro-geomorphological method are simple (Coque, 1993; Garry et al , 2002). Streams can be characterized by the existence of three river beds: minor bed, middle bed and major bed.…”

Mapping and Zoning of Flood Hazard: Case Study of the Ouad Lahdar Valley at the Meknassa Al Gharbiya Territorial Center, Upper Inaouene, Morocco (Application of the Hydrogeomorphological Method)

“…In other regions, particularly in France, approximately 18,000 municipalities (Garry et al, 2002) have already experienced this phenomenon, reflecting the significance given to this risk by public authorities. Over the past few decades, floods have led to considerable damages, with average annual costs estimated at €611 million for the period 1980-2000 (Gresillon, 2004).…”

“…Regarding studies in hydrogeomorphological mapping, they reveal several advantages of this method, such as reduced cost, quick execution, and better visibility of flood-prone areas (Masson et al, 1996). This approach has proven effective in mapping extreme floods, as evidenced by analyses of events on the Ouvèze in 1992, the Aude in 1999, and the Gardons in 2002 (Masson, 1993;Chave, 2003;Garry et al, 2002;Ballais, 2006). Furthermore, the 2004 circular (METLTM et MEDD, 2004) mandates the integration of hydrogeomorphology into the Flood Risk Prevention Plans of departments in the Mediterranean region.…”

O papel das estruturas litológicas e tectônicas na evolução da rede hidrográfica da Região Serrana do Espírito Santo: o caso da bacia hidrográfica do Rio Benevente

“…(2011, entre outros. Para a corrente que aborda o estudo dos canais fluviais, propriamente ditos, os exemplos são os trabalhos de Barco (1995), Chave (2002), Garry et. al.…”