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3. Flooding processes
To understand this process, we need to analyze the various factors that contribute to the formation and temporary increase in river flows. To simplify, we distinguish between :
mobilizable water, made up of water received by the watershed ;
runoff, corresponding to the proportion of water that has not infiltrated the soil. It depends on the nature of the soil, its surface occupation and the intensity of the rainfall event;
time of concentration, defined as the time required for a drop of water to reach the watershed outlet from the point furthest away;
flood wave propagation, a function of the structure of the bed and alluvial valley, in particular the slope and characteristics of the floodplain.
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Flooding processes
Bibliography
Websites
https://bdhi.developpement-durable.gouv.fr/welcome
Directory
Organisme professionnel de prévention du bâtiment et des travaux publics – OPPBTP http://www.oppbt.fr
French Building Federation – FFB https://www.ffbatiment.fr
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