Velachery aeri (Tamil: வேளச்சேரி ஏரி), or Velachery lake, is one of the lakes inside Chennai, in the Indian state of Tamil Nadu, with a good stock of water all through the year.

The consultant gave a detailed plan in October last on how to beautify the lake.

The consultant also suggested plantation of African grass, reed and bamboo along the middle deck and flowering plants and trees like bottlebrush, bougainvillea, royal palms and areca nut betel palms along the upper deck.

The government allocated 53 acres to the Tamil Nadu Housing Board and 34 acres to the Tamil Nadu Slum Clearance Board for housing development.

Local residents have expressed concerns that the encroachers on Erikkarai Street in Gandhi Nagar, who don't have sewage connections, are contributing to the pollution of the lake.