The stock of usable water in Mumbai's supply lakes has increased to more than 43% of their total capacity, the Brihanmumbai Municipal Corporation (BMC) data showed on Wednesday. Together, the seven lakes can hold up to 14,47,363 million litres of usable water.
On Wednesday, the capacity of the seven lakes stood at 43.46% or 6,29,032 million litres. The seven main lakes supplying water to Mumbai are Bhatsa, Upper Vaitarna, Middle Vaitarna, Tansa, Modak Sagar, Vihar, and Tulsi. These are located across Mumbai, Thane and Nashik districts and rely heavily on rainfall to recharge.
The arrival of early southwest monsoon in India has significantly contributed to the surge in water levels of these lakes. A year ago, these lakes contained just 7.15% usable water of the total capacity.
🚰 मुंबईला पाणीपुरवठा करणाऱ्या ७ जलाशयांचा आज सकाळी ६ वाजेपर्यंतचा अहवाल
July 2, 2025
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🚰 Report of water stock in the seven lakes, supplying water to Mumbai, till 6am today.#MumbaiRains#MyBMCUpdates pic.twitter.com/AMJk7zX3EFAt present, Upper Vaitarna has the highest stock of usable water content at 56.65% or 1,28,625 million litres.This figure was zero during the same period in both 2024 and 2023. Modak Sagar also contained 54.12% stock of usable water, making it the second lake to have over half of its total capacity filled.
The BMC data showed that all lakes, except Vehar and Tulsi recorded a spike in their levels in the last 24 hours. All seven lakes have received rainfall in the past 24 hours, according to BMC data. Upper Vaitarna recorded the highest at 62 mm, followed by Middle Vaitarna with 57 mm. The remaining lakes received less than 50 mm of rainfall.
Mumbai Rainfall Prediction Till July 5
With the India Meteorological Department (IMD) forecasting more rain, water levels in these lakes are expected to rise further. Mumbai, Thane, and Nashik are likely to experience heavy rainfall on Wednesday, prompting the IMD to issue a yellow alert for these areas over the next 24 hours. Mumbai and Thane will continue to see heavy rain till the morning of July 4. Meanwhile, Nashik will experience light to moderate rain till July 5, the weather agency said.
July 2-3: Heavy rainfall is “very likely” at isolated places.
July 4-5: Moderate rainfall is “very likely” across city
According to the IMD, heavy rainfall is classified as rainfall between 64.5 mm and 115.5 mm within a 24-hour period.
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