Sankey Tank is a manmade lake or tank situated in the middle of the suburbs of Malleshwaram, Vyalikaval and Sadashiva Nagar in Bangalore. The lake covers an area of about 15 ha (37.5 acres). At its widest, the Tank has a width of 800 m (1792 ft).
Sankey Tank was constructed by Col. Richard E. Sankey of the Madras Sappers Regiment, in 1882 A.D to meet the water supply demands of Bangalore. The tank was also known as Gandhadhakotikere, as the Government Sandalwood Depot used to be located near the lake.
The tank has a park and a swimming pool to its south and a Forest Department nursery towards the north. The tank, which was until recently neglected, has been converted from its primary function as a reservoir to a park by the Bangalore Water supply and Sewerage Board (BWSSB) and Bangalore Mahanagara Palike (BMP). Paved Walkways, landscaped parks and a special tank for idol immersion during Ganesh Chaturthi have been constructed.
Distance from Majestic to Sankey Tank is 5.9 km and takes around 15 min via Chowdaiah Road/Sankeys Road.