Mumbai lake water stock rises slightly to 7.31 percent after monsoon showers

Mumbai's useful water stock across its seven supplying reservoirs, including Vihar and Tulsi lakes, rose slightly to 7.31 percent following recent monsoon showers, according to data released by the Hydraulic Engineer’s Department on Saturday morning. Based on measurements recorded at 6:00 AM on June 27, the total useful water content across the city's reservoirs stood at 1,05,755 million litres.

Despite the recent rainfall, the current water stock remains significantly lower than the levels recorded during the same period last year. During this time last year, the reservoirs held 5,37,788 million litres of useful water.

Among the seven lakes supplying drinking water to Mumbai, Vihar lake recorded the highest storage level at 45.13 percent useful content. Tulsi lake stood at 21.31 percent, while Modak Sagar held 18.87 percent, and Middle Vaitarna was at 11.31 percent.

Bhatsa, which is one of the key water sources for Mumbai, recorded only 6.17 percent useful stock. Meanwhile, Tansa lake held just 0.77 percent useful content, and Upper Vaitarna currently has no usable water stock available.

Rainfall in the catchment areas remained moderate over the 24 hours leading up to the report. Tulsi lake received 17 mm of rain, Modak Sagar received 10 mm, Tansa saw 3 mm, and Vihar recorded 2 mm. The Bhandup Complex recorded no rainfall during this 24-hour period, though its cumulative seasonal rainfall reached 195 mm.

Cumulative seasonal rainfall varied across the reservoirs, with Tulsi recording the highest at 306 mm and Upper Vaitarna recording the lowest at 8 mm. Modak Sagar has recorded 69 mm of total rainfall so far.

To manage the water flow, authorities opened one gate of the Middle Vaitarna reservoir on June 23 at 11:00 PM. Additionally, water release from the Upper Vaitarna reservoir commenced on June 22 at 11:00 AM following increased rainfall in its catchment region.