Mumbai Water Reservoir Levels Reach 54.05% Capacity After Continued Monsoon Rains

Mumbai's drinking water reservoirs continued to receive inflows as monsoon rains persisted across their catchment areas, according to a news published in Mid-Day. According to the Hydraulic Engineer's Department report released at 6 AM on July 20, 2026, the total useful water stock in the city's 7 lakes rose to 7,82,370 million litres (ML).

This represents 54.05% of the combined live storage capacity of 14,47,363 ML. Several reservoirs recorded increases in water levels over the previous 24 hours, while Vihar and Tulsi lakes remained full and overflowing.

Mumbai Water Storage Levels on July 20, 2026

The total live water stock across Mumbai's 7 reservoirs stood at 7,82,370 ML, equivalent to 54.05% of the city's total live storage capacity. Continuous rainfall across the catchment areas contributed to rising reservoir levels.

The city's lakes collectively provide drinking water to millions of residents throughout the year. The latest figures indicate a significant improvement in water availability compared with earlier stages of the monsoon season.

Upper Vaitarna, Modak Sagar, Tansa and Middle Vaitarna Storage

Among the major reservoirs, Modak Sagar and Tansa reported storage levels above 80% of their respective capacities. Upper Vaitarna held 76,605 ML, equivalent to 33.74% of its useful content, while Middle Vaitarna stored 93,316 ML or 48.22% of capacity.

Middle Vaitarna recorded the highest daily water-level rise of 0.63 metres, reaching 266.39 metres. Together, these 4 reservoirs contained 4,01,000 ML of water, representing 57.73% of their combined live storage capacity.

Bhatsa, Vihar and Tulsi Lake Water Levels

Bhatsa, Mumbai's largest reservoir, held 3,45,626 ML of water, accounting for 48.20% of its useful storage capacity. Vihar and Tulsi lakes remained 100% full, with storage levels of 27,698 ML and 8,046 ML, respectively.

Vihar's water level stood at 80.38 metres, while Tulsi reached 139.20 metres after additional rainfall. These reservoirs have continued to benefit from sustained monsoon activity across the region.

Mumbai Rainfall Update and Reservoir Operations

Tulsi recorded the highest rainfall among all 7 reservoirs during the last 24 hours at 144 mm, taking seasonal rainfall to 2,449 mm. Bhandup Complex received 81 mm rainfall during the same period, with cumulative rainfall reaching 1,899 mm.

According to the report, Vihar Lake has been overflowing since July 7, 2026, at 9 PM, while Tulsi Lake has been overflowing since July 7, 2026, at 11:43 PM. The Middle Vaitarna WSCPO gate has remained closed since July 6, 2026, and water releases from Upper Vaitarna have remained suspended since July 6, 2026.

Read More: India Rainfall Deficit Narrows to 14% as Southwest Monsoon Covers Entire Country.

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Conclusion

Mumbai's water reservoirs continued to show positive storage growth following ongoing monsoon rainfall. The combined useful water stock reached 7,82,370 ML, taking overall storage to 54.05% of total live capacity.

Most reservoirs recorded increases in water levels over the previous 24 hours, while Vihar and Tulsi remained completely full and overflowing. The latest reservoir status highlights the impact of sustained rainfall across the city's water catchment areas during the monsoon season.

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