Qaraoun lake is an artificial lake or reservoir located in the southern region of the Beqaa Valley. It was created near Qaraoun village in 1959 by building a 61 m-high concrete-faced rockfill dam (the largest dam in Lebanon) in the middle reaches of the Litani River (longest river in Lebanon). The reservoir has been used for hydropower generation, domestic water supply, and for irrigation of 27,500 ha.
The vegetation in the periphery of the lake consists of woodland, orchards, and low-growing scrub. During water-level variations in the lake, as the stored water is utilised for various beneficial uses, no submerged or emergent vegetation have been noticed. When the water level is at its lowest in the lake, a steppe-like land slope has been noticed with low vegetation of rocky shingle terrain where flocks of larks and lapwings are seen.
The bird life in the reservoir area is very notable, as 20,000 migratory birds of species of raptors, storks, pelicans and others species of birds have been sighted.
On the western periphery of the lake there are many restaurants and hotels which are popular during late spring and summer. During this time many large boats operate in the lake for lake viewing and also for fishing. In winter, when water level in the lake is high boats are operated to hunt for birds.