DJORET Daira1, SARA Vassolo2 1 Lake Chad Basin Commission, Ndjamena (LCBC), Tchad, Ndjamena 2 Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Hanover, Germany, djoreda@yahoo.fr   svassolo@yahoo.fr   Abstract The Lake Chad Basin is a large endorheic basin of some 2,400,000 km² that occupies part of Chad, Cameroon Nigeria, Niger, Libya, Algeria, Sudan and the Central African Republic. […]