The Litani River drains the southern end of the Beqaa Valley plains (a continuation of the Jordan Rift Valley), crossing the southern periphery of the Mount Lebanon range and discharging into the sea north of Tyre, after traversing a length of entirely in Lebanon. The hydrographical system of Lebanon consisting of 40 major streams is typecast into five regions, which includes the Litani River Basin formed by the Litani River in its eastern and southern part, with the river debouching into the sea at the southwestern end. The basin has a total catchment area of , which forms 20% area of the country, with about intercepted at Lake Qaraoun by El Wauroun Dam for providing various benefits. The artificial lake is created across the Litani River in its middle reaches. Litani River is the longest river in Lebanon at the southern end of the Beqaa valley.