Mumbai water stock rises to 89.49 per cent as seven lakes hold nearly 13 lakh million litres

Representational image. File pic

Mumbai's seven lakes, which supply drinking water to the city, collectively held 12,95,274 million litres of water, or 89.49 per cent of their total live storage capacity, as of 6 am on Wednesday, August 12, according to the Hydraulic Engineer's Department at the Bhandup Master Control Centre.

The current stock now stands higher than the same period last year, when the reservoirs contained 12,91,030 million litres (89.20 per cent). However, the lake levels remained significantly lower than 2024, when the lakes had 13,39,602 million litres, accounting for 92.55 per cent of the total live storage.

[mumbaiwaterstock]

Vihar and Modak Sagar lake remain full

Among the seven reservoirs, Vihar and Modak Sagar lakes remained at 100 per cent live storage, with levels of Tulsi standing at 99.46 per cent as of Wednesday.

Water levels at Tansa stood at 98.77 per cent, Middle Vaitarna was at 92.78 per cent, Bhatsa, the city's largest reservoir, was at 81 per cent, while Upper Vaitarna remained the lowest-filled lake at 81.01 per cent.

The current storage in individual lakes is as follows:

• Upper Vaitarna: 1,83,934 million litres (81.01 per cent)
• Modak Sagar: 1,28,925 million litres (100.00 per cent)
• Tansa: 1,43,299 million litres (98.77 per cent)
• Middle Vaitarna: 1,79,553 million litres (92.8 per cent)
• Bhatsa: 6,23,819 million litres (87 per cent)
• Vihar: 27,698 million litres (100 per cent)
• Tulsi: 8,046 million litres (100 per cent)

Light showers continued across the lake catchment areas over the past 24 hours, with Tulsi receiving the highest rainfall of 96 mm.

Other rainfall recorded at the reservoirs includes:

• Upper Vaitarna - 46 mm
• Middle Vaitarna - 48 mm
• Modak Sagar- 59 mm
• Tulsi - 96 mm
• Tansa - 47 mm
• Bhatsa - 31 mm
• Vihar - 80 mm

The Bhandup Complex recorded significant rainfall during the last 24 hours, taking its cumulative seasonal rainfall to 2,558 mm.

Monsoon rainfall so far

The cumulative rainfall recorded at the reservoirs this monsoon is:

• Upper Vaitarna - 3,252 mm
• Modak Sagar - 2,739 mm
• Tansa - 2,543 mm
• Middle Vaitarna - 2,426 mm
• Bhatsa - 2,354 mm
• Tulsi - 3,255 mm
• Vihar - 2,348 mm

Reservoirs at their full capacity

The report stated that Vihar Lake has been overflowing since July 7. However, the capacity of Tansa Dam has decreased, which had been overflowing till Saturday. On the other hand, the water level of Modak Sagar Dam has also decreased marginally on Sunday.

Meanwhile, the Middle Vaitarna WSCPO gate remains closed, and the release of water from Upper Vaitarna has remained suspended since July 6, according to the Hydraulic Engineer's Department.