Mumbai’s water supply comes from seven lakes: Upper Vaitarna, Modak Sagar, Tansa, Middle Vaitarna, Bhatsa, Vihar and Tulsi.
Two lakes in Mumbai—Tulsi and Vihar located inside the Sanjay Gandhi National Park—have started overflowing even as the water stock in lakes and reservoirs in the Mumbai Metropolitan Region (MMR) has increased considerably due to one week of torrential rains, now standing at 41 per cent.
The Powai Lake, which drains into the Mithi River, started overflowing on 1 July.
Mumbai’s water supply comes from seven lakes: Upper Vaitarna, Modak Sagar, Tansa, Middle Vaitarna, Bhatsa, Vihar and Tulsi.
While Tulsi and Vihar are located inside the SGNP in Mumbai, Modak Sagar, Tansa and Bhatsa are located in Thane district, Middle Vaitarna is located in Palghar district and Upper Vaitarna is in Nashik district.
On June 30, the water stock in Mumbai was between six and seven per cent of the total usable capacity
However, as of Wednesday, July 8, 2026 it stands at 41.36 per cent.
The increase has brought the Brihan Mumbai Municipal Corporation (BMC) to a comfortable position.
“Due to the rainfall that occurred in the 24 hours from 6 AM on Tuesday, July 7, 2026, to Wednesday, July 8, 2026, the water stock in the 7 reservoirs supplying water to Mumbai has reached 41.36 per cent. In the last 24 hours, there has been a 12.44 per cent increase in the water stock in the reservoirs. Additionally, there has been a 24.44 per cent increase in 48 hours,” the BMC said.
The Vihar and Tulsi lakes started overflowing at 9 pm hours and 11:43 pm 7 July, respectively.
“The total maximum water storage capacity of the 7 dams supplying water to Mumbai is approximately 1,44,736.3 crore liters (14,47,363 million liters), the BMC said.
Source: https://tinyurl.com/vk2r2ha7
