Mumbai lake levels: Water stock reaches 49.41 per cent, Modak Sagar crosses 83 per cent storage capacity

Vihar Lake and Tulsi Lake have reached 100 per cent of their useful live storage capacity. File Pic

Mumbai's seven lakes supplying drinking water to the city now hold 7,15,210 million litres (ML) of water, which is 49.41 per cent of their total live storage capacity of 14,47,363 ML, according to the Hydraulic Engineer's Department, Master Control Centre (Bhandup), at 6 am on Friday, July 10.

The latest data shows a steady rise in reservoir levels following recent monsoon rainfall, although inflows have slowed over the past 24 hours.

Vihar and Tulsi lakes remain full, continue overflowing

Among the city's reservoirs, Vihar Lake and Tulsi Lake have reached 100 per cent of their useful live storage capacity.

Vihar currently holds 27,698 ML of water and continues to overflow after first spilling over on July 7 at 9 pm. Tulsi Lake, which also reached full capacity, contains 8,046 ML and began overflowing on July 7 at 11.43 pm.

Modak Sagar above 83 per cent, Tansa at 78 per cent

Modak Sagar, one of Mumbai's key reservoirs, holds 1,07,351 ML, which is 83.27 per cent of its live storage capacity of 1,28,925 ML. The lake recorded 1 mm rainfall in the past 24 hours and its water level increased by 0.09 metres.

Tansa Lake contains 1,13,608 ML, or 78.31 per cent of its useful storage capacity. The lake level rose by 0.07 metres over the last 24 hours.

Upper and Middle Vaitarna levels continue to improve

Upper Vaitarna Lake currently stores 62,707 ML, accounting for 27.62 per cent of its live storage capacity. The reservoir level rose by 0.06 metres during the last 24 hours.

Middle Vaitarna Lake registered one of the highest increases in water level, rising by 0.59 metres. It now holds 83,979 ML, equivalent to 43.39 per cent of its live storage capacity.

Combined storage in Upper Vaitarna, Middle Vaitarna and Tansa stands at 3,67,645 ML, or 52.93 per cent of their collective useful capacity of 6,94,582 ML.

Bhatsa reservoir at 43.49 per cent capacity

Bhatsa Lake, the largest contributor to Mumbai's water supply, currently holds 3,11,821 ML of water, representing 43.49 per cent of its total useful capacity of 7,17,037 ML. The reservoir level increased by 0.30 metres during the last 24 hours.

Rainfall remains subdued

Most reservoirs recorded little to no rainfall in the last 24 hours. Modak Sagar received 1 mm, while Upper Vaitarna, Tansa, Middle Vaitarna, Bhatsa, Vihar and Tulsi recorded 0 mm rainfall.

However, cumulative seasonal rainfall remains significant, with Tulsi receiving the highest total rainfall of 2,196 mm, followed by Vihar at 1,643 mm, Tansa at 1,367 mm, Modak Sagar at 1,317 mm, Bhatsa at 1,070 mm, Upper Vaitarna at 899 mm, and Middle Vaitarna at 952 mm.

Key developments

• According to the Hydraulic Engineer's Department:
• Middle Vaitarna's WSCPO gate was opened on June 23 at 11 am
• Water release from Upper Vaitarna began on June 22 at 11 am
• The Upper Vaitarna release was stopped on July 6 at 10 am
• Total rainfall recorded at the Bhandup Complex stands at 1,716 mm
• Vihar Lake started overflowing on July 7 at 9 pm
• Tulsi Lake started overflowing on July 7 at 11.43 pm

The city's water stock remains significantly lower than the 73.50 per cent storage recorded on the same date last year, but is substantially higher than the 21.67 per cent recorded on July 10, 2024.

For more Mumbai Monsoon coverage, including weather forecasts, rain updates, transport disruptions, lake levels and civic advisories, visit our Mumbai Monsoon page.