La Houille Blanche
Number 6-7, Octobre 2002
|Page(s)||131 - 138|
|Published online||01 July 2009|
Etude de cas: l'analyse des pluies et crues extrêmes observées depuis 200 ans dans un bassin cévenol, l'Ardèche
A case study on the Ardeche river : flood frequency analysis of historical events within the two last centuries
Cemagref Lyon Cemagref, U.R Hydrologie-Hydraulique, 3 bis quai Chauveau, 69336 Lyon cedex 09
2 Acthys-Diffusion Grenoble, 36 rue Bizanet, 38000 Grenoble
3 ODE, Service d'annonce des crues de l'Ardèche, BP 613, 07006 Privas cedex
This paper presents the Historisk-Ardeche project, based on the collaboration between historians, archivists, hydraulicians and hydrologists. It provided the inventory of very extreme rainfall and flood values during the two last centuries on the Ardeche catchment. A long discharge data series (1644-2000) on the St-Martin-d'Ardèche area is issued from an hydraulic modelling, with an estimate of the relative errors. A flood frequency analysis shows a good agreement between the historical approach and an hydrometeorological approach (Gradex model).
© Société Hydrotechnique de France, 2002
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