The Tansa River is a small river on Salsett island near Mumbai, and is one of Mumbai's water sources via Tansa Lake. It is embanked by one of the largest masonry dams in the world, built in 1892. The embankment is nearly 2 metres long, 118 ft (36 m) high, and 30 metres thick at the base. The dam has 1.31 cubic kilometres capacity of water retention. The dam has about 38 spilway gates.
This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.