Tschadbecken
The LCBC controls the hydro-active regions in the Chad Basin, called the "Conventional Basin". The initial Conventional Basin consisted of approximately 427,500 km² of the total area of the Chad basin in 1964. The definition says it excluded the majority of the terminal depression consisting of desert that provides little or no effective hydrological contribution to the Conventional Basin. This was subsequently expanded to include additional watersheds in northern Nigeria, southern Chad, and northern Central African Republic, with a current total area of 967,000 km².