Lake Kuş or Lake Manyas (Turkish: Kuş Gölü meaning Bird Lake, or, Manyas Gölü) is a lake in western Turkey, located in the Bandırma region. This is a shallow nutrient-rich freshwater lake (average depth 3 m) fed by groundwater and four streams. Small deltas have formed where the latter enter the lake, comprising extensive marshes and tree-lined riverbanks. Narrow belts of reed Phragmites fringe much of the lake. Water is abstracted for factory use and for irrigation.