Mumbai, July 8: Continuous heavy rainfall across Mumbai has led to Tulsi Lake overflowing at 11:43 pm on July 7, 2026, shortly after Vihar Lake began overflowing at 9:00 pm the same evening. Tulsi is one of the seven lakes supplying drinking water to Mumbai and one of the two lakes located within the city limits.
Despite the overflow of both lakes, the combined water stock in Mumbai’s seven water-supplying reservoirs has reached 41.43% of their total storage capacity, according to the Brihanmumbai Municipal Corporation (BMC).
Tulsi Lake had overflowed on August 16, 2025, while in 2024 it reached full capacity on August 4. With a useful storage capacity of 8.046 billion litres (8,046 million litres), Tulsi is the smallest of Mumbai’s seven water supply lakes. It supplies an average of 18 million litres of drinking water per day.
The lake has filled rapidly due to sustained rainfall in its catchment area over the past few days, the BMC’s Water Engineering Department said.
Constructed in 1879 at a cost of approximately ₹40 lakh, Tulsi Lake is located about 35 km from the BMC headquarters. It has a catchment area of 6.76 sq km, while the lake’s water spread covers around 1.35 sq km when full.
Overflow water from Tulsi Lake eventually flows into Vihar Lake, forming an important part of Mumbai’s water supply system.
