Porur Lake, locally known as Retteri or Porur Aeri, is a prominent water body located in the southern fringes of Chennai city, in the state of Tamil Nadu, India. Nestled in the suburb of Porur in Tiruvallur district’s Poonamallee taluk, the lake not only adds charm to the landscape along the Chennai Bypass but also plays a critical role in supporting the city’s water needs and ecological balance.