Madu River is a wetland, near the Small town "Balapitiya" along the Colombo Galle highway. This is the point where the Estuary of the Madu river. high ecological, biological and aesthetic significance, being home to approximately 303 species of plants belonging to 95 families and to 248 species of vertebrate animals. The river flows through a terrain where it creates a large number of islands, and the eco system creates a beautiful wetland.