The Litani River (Arabic: نهر الليطاني; transliterated: Nahr al-Līţānī; classical name: Leontes) is an important waterway in southern Lebanon. It rises west of Baalbek in the fertile Beqaa Valley valley and empties in the Mediterranean Sea north of Tyre, one of Lebanon’s largest cities. Exceeding 140 km, it is the longest river that originates and flows entirely within the borders of Lebanon. Most of its catchment area was under Israeli control during 1978 and from 1982 to 2000. It is a major water supply for Southern Lebanon.