Complex sentence: As result of this development the hydrological regime of the Litani River has been divided into two zones; the basin above the lake is known as the Upper Litani Basin (ULB) and that below the lake as called Litani's lower reaches.
Split into simpler sentences: As result of this development the hydrological regime of the Litani River has been divided into two zones. The basin above the lake is known as the Upper Litani Basin (ULB), and that below the lake is called Litani's lower reaches.