Lake Kus (Manyas). 13/07/94; Bahkesir; 20,400 ha; 40°10'N 028°00'E. Cultural and Natural Asset; National Park, Permanent Wildlife Reserve. A turbid nutrient-rich lake fed by streams and groundwater, subject to seasonal fluctuations in level. The site includes small deltas, extensive marshes supporting reeds and rushes, and tree-lined river banks. The lake, on a migratory waterbird route, supports a rich plant community and provides important feeding grounds for birds. The site holds significant breeding populations of various species of waterbirds, several of which are threatened, and is important for wintering, migrating, and roosting birds. The lake supports 23 fish species and various species of reptiles and amphibians. Human activities include an important commercial fishery and scientific and educational programmes. The lake is an important water source for agriculture and industry. Ramsar site no. 660. Most recent RIS information: 1998.