Évolution de la dynamique fluviale d’oued El Klab Dans la plaine de Sigus de 1959 à 2014 (Oum El Bouaghi, Algérie)

Abstract

This paper talks about the evolution of river El Klab, from 1959 to 2014 essentially based on historical maps. The section studied (13, 42 km long) is mostly situated in the alluvial plain of Sigus in the region of Oum el Bouaghi. During the 55 years of this period the position of El klab river has evolved. The evolution of fluvial dynamics of this river part has influenced the change form. The development of meander by the regressive erosion in the upstream party and the very active elaboration of meander by the extension of the bed of river in the party is approval (downstream). Some reasons of this change have already been identified. They concern the human impact, the changes of the conditions hydraulics, recalibration of the bed of river in the zone urbanized (Sigus) in the average part for deprived the flood risk in translate the phenomena of erosion downstream, the rate of side erosion in summer considered the 1,10 m / years.