Oued de Boussellam, Plaine, Eau, Pollution Microbiologique et Agricole, Sétif.

Abstract

The mapping of vulnerability areas to flooding in the sub-drainage basin of WadiBoussaada, through remote sensing and GIS techniques, by using satellite images and ArcGIS software. - The quantification of wadi flows due to orrential rains, based on the vulnerability map developed, flood events history. The obtained results from the vulnerability map indicate the presence of five levels of vulnerability in the study area, of which the low and moderate ulnerability areas reduce the water inputs by an estimated fraction of 15.01%. This reduction is due to the presence of a combination of factors preventing the genesis of floods.On the other hand, the high vulnerability areas present hydrological factors that favor the torrentiality of the wadi, such as humidity and infiltrability of the soil. This parameter plays a major role in the occurrence of the studied phenomenon.