Bellandur Lake is a lake in the suburb of Bellandur in the southeast of the city of Bengaluru and is the largest lake in the city. It was used for landing amphibious aircraft during British rule .It is a part of Bellandur drainage system that drains the southern and the south-eastern parts of the city. The lake is a receptor from three chains of lakes upstream, and has a catchment area of about 148 square kilometres (37,000 acres). Water from this lake flows further east to the Varthur Lake, from where it flows down the plateau and eventually into the Pinakani river basin.