Résumé:
Algeria, like the countries of North Africa, is facing a rainfall deficit that has lasted
since the last years. Like Algeria, the western part of the country is experiencing a persistent
drought. This situation negatively affects the water resource on which the demand constantly
grows.
The 1990-2010 decade was characterized by a large rainfall surplus and especially
in the south-north region of the study area (Saida, Sidi Boubekeur), and also characterized by
a deficit over the western wilaya (Youb). Who was severely affected by this decrease.
The rainfall deficit is closely related to the decrease in winter rainfall and to a lesser
degree than in the spring. This relationship is evidenced by the relationship between the
annual rainfall index and the drought index.
