The lake was originally constructed to provide water to the northern parts of Bangalore through a series of connected tanks.
It is a key nesting ground for bird species such as the Spot-billed Duck, Little Cormorant, and various species of Kingfishers.
The reservoir is fed primarily by rainwater runoff from the surrounding catchment areas in the Malleshwaram and Sadashivanagar localities.
The park underwent a major restoration project in the early 2000s to remove invasive species and improve water quality.
The tank acts as an essential buffer for groundwater recharge in the surrounding residential neighborhoods.
Sankey Tank is a man-made lake created in 1882 by Col. Richard Hieram Sankey to meet the water supply requirements of Bangalore. The reservoir spans approximately 37 acres and features a stone-lined perimeter with designated walkways. The site is a managed urban park operated by the Bruhat Bengaluru Mahanagara Palike (BBMP). It functions as a significant biodiversity hotspot for migratory birds and local avian species. Visitors can access pedal boats and rowing facilities provided by the Karnataka State Tourism Development Corporation. The tank acts as a critical local catchment area for rainwater collection in the Vyalikaval and Malleshwaram regions. Vegetation includes a mix of eucalyptus, acacia, and indigenous tree species planted along the embankment. The perimeter path provides a leveled track frequently used for morning and evening exercise.
The western embankment during sunset, which offers a clear view of the water reflecting the surrounding canopy.
Arrive early in the morning to observe peak bird activity before the park gets crowded.
Stick to the paved walkways to avoid muddy patches near the water's edge during the monsoon season.
Bring binoculars as the floating islands in the center of the lake attract diverse birdlife that is difficult to see from the shore.
Feeding the fish or birds, as this disrupts the local ecosystem, and visiting during mid-day heat in the summer months.
Littering is strictly prohibited; quiet behavior is expected near the nesting zones.
