Tansa Dam

Tansa Dam is an earthfill and gravity dam on the Tansa River in Shahapur, Thane district, Maharashtra. Completed in 1892, it serves as one of the seven primary drinking water sources for Mumbai. The reservoir lies within the Tansa Wildlife Sanctuary, creating a biodiverse environment surrounded by lush green hills. It is a regulated water supply infrastructure that also attracts visitors for birdwatching and nature observation in designated areas.

Visitors can expect views of a vast reservoir surrounded by forested hills within a wildlife sanctuary. Birdwatching is a primary activity, with opportunities to spot local and migratory species, particularly in the early morning. Access may be restricted as the site is a critical water source and protected area; some zones require forest department permission. The environment is generally peaceful and natural, with limited commercial facilities.

Completed in 1892, Tansa Dam was constructed to meet the water requirements of Mumbai (then Bombay) and surrounding regions. It is one of the oldest major dams supplying water to the city and represents significant 19th-century hydraulic engineering in Maharashtra.