Varthur Lake series, a part of the Koramangala-Challaghatta lake system.[2][3][4] Disused/former lakes (yellow) and sewage treatment plants (red) related to the series marked.
Madiwala lake is one of the biggest lakes in Bangalore, India spread over an area of 114.3 hectare. The water in the lake was fit for drinking till the early 1990s. Since then it has become unfit for drinking due to industrial waste and sewage entering the waterbody. It has gradually become polluted.[5][6]
It is situated in the BTM Layout at 12° 54' 28" North, 77° 37' 0" East in Bangalore city. It is a home to many migratory birds. The lake comes under the administration of Karnataka State Forest Department which carries out the routine maintenance of this lake. There is a children's park as well. The lake received a Rs 25 Crore grant in 2016 from the Lake Development Authority of Bangalore.
^Ramachandra, T. V.; Mahapatra, Durga Madhab; S, Vinay; V, Sincy; K S, Asulabha; Bhat, Sudarshan P.; Aithal, Bharath H. (April 2017), Bellandur and Varthur Lakes Rejuvenation Blueprint, ENVIS Technical Report 116, Energy and Wetlands Research Group, Centre for Ecological Sciences, Indian Institute of Science, Bangalore, retrieved 5 October 2022 See section "Study Area" for Konena Agrahara Lake