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Mumbai controls several dams in Shahapur Taluka (Thane district) that deliver water to the City and Suburban areas. The Western Ghats trap most of the moisture laiden monsoon clouds which feed these dammed rivers. Currently, these dams/ lakes deliver approximately 3.4 billion litres of water to Mumbai City and Suburban areas daily. Here are the dams/ lakes supplying the city the water it needs to survive:

Dams and Lakes near Mumbai
Dam ^[1]	Year ^[2]	Capacity (Million Litres)	Overflow Level (Metres) ^[3]
Vihar Lake	1860 & 1872	25,698	80.42
Tulsi Lake	1872	8,046	139.17
Tansa	1892 (Stage-I) 1915 (Stage-II) 1925 (Stage-III) 1948 (Stage-IV)	145,080	128.63
Modak Sagar (Lower Vaitarna)	1954 & 1957	128,925	163.15
Upper Vaitarana	1972	227,047	603.51
Bhatsa	1980 to 2007	717,037	142.07
Middle Vaitarna^[4]	2014	193,530	285.00

Tansa and Vaitarna dams supply the Southern region of Mumbai, while the rest supply the suburbs. An underground tank in Malabar Hills is used to store the water.

^[5]

References

^ Mumbai City Development Plan 2005-25 "[1]"
^ Municipal Corporation of Greater Mumbai "[2]"
^ Maximum Lake Levels "[3]"
^ Middle Vaitarna "[4]"
^ Bharucha, Nauzer K.; Pinto, Richa (15 September 2016). "This Bhandup complex is source of safe drinking water to the city". The Times of India. Retrieved 10 January 2023.