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MMR Reservoir Levels Continue to Rise Mumbai Water Stock Nears 78Pct as Key Dams Fill Up

  • Writer: Ajjay Bhagyakar
    Ajjay Bhagyakar
  • Jul 30
  • 2 min read

Heavy Monsoon Boosts Water Storage Across Mumbai Metropolitan Region

The ongoing monsoon has brought encouraging news for the Mumbai Metropolitan Region (MMR), with reservoir levels continuing to rise steadily. The latest catchment data shows that Mumbai's usable water stock has reached 77.74%, while several key reservoirs supplying Mumbai, Navi Mumbai, Thane and Palghar have recorded significant increases.


The strong inflows have improved the region's water security outlook, reducing concerns over drinking water availability for the coming months.

Mumbai's Four Major Lakes Reach Full Capacity

Vihar, Tulsi, Tansa and Modak Sagar Overflow

Mumbai's reservoir network has received a substantial boost following continuous rainfall.

According to the latest update:

  • Vihar Lake – 100%

  • Tulsi Lake – 100%

  • Tansa Dam – 100%

  • Modak Sagar – 100%

  • Middle Vaitarna – 75.14%

  • Bhatsa – 73.51%

  • Upper Vaitarna – 62.97%

With four reservoirs already overflowing, Mumbai's overall usable water stock now stands at 77.74%, placing the city in a much stronger position compared to the early weeks of the monsoon.

Navi Mumbai and Thane Reservoirs Also Record Healthy Rise

Hetawane Nears Full Capacity

Reservoirs serving other parts of the Mumbai Metropolitan Region have also shown impressive growth.

Current storage levels include:

  • Hetawane Dam (Navi Mumbai): 91.71%

  • Morbe Dam (Navi Mumbai): 58.31%

  • Barvi Dam (Thane): 68.11%

  • Dhamni Dam (Palghar): 96.4%

One of the most notable increases was recorded at Dhamni Dam, where water storage witnessed a sharp jump within a day following heavy rainfall across the catchment area.

Why Rising Reservoir Levels Matter

Better Water Security for the Region

The improvement in reservoir levels is a positive development for millions of residents across Mumbai and the MMR.

Higher water storage helps:

  • Strengthen year-round drinking water availability.

  • Reduce the possibility of future water supply cuts.

  • Improve overall water security during the remaining dry season.

  • Support urban growth and infrastructure development.

  • Enhance preparedness for increasing population demand.

As reservoirs continue to receive healthy inflows, municipal authorities can better manage water resources for residential, commercial and industrial consumption.

Monsoon Still Active Across MMR

Authorities Continue to Monitor Reservoir Inflows

While rising water levels are encouraging, authorities continue to closely monitor rainfall patterns and reservoir inflows.


Overflowing dams are managed through controlled water releases whenever required to maintain safe reservoir levels and minimise downstream flood risks.


Residents living near riverbanks and dam discharge channels are advised to stay informed through official announcements during periods of heavy rainfall.

Conclusion MMR Reservoir Levels Continue to Rise Mumbai Water Stock Nears 78Pct as Key Dams Fill Up

The latest MMR Catchments Update highlights the positive impact of this year's monsoon, with Mumbai's water stock approaching 78% and several major reservoirs reaching full capacity, MMR Reservoir Levels Continue to Rise Mumbai Water Stock Nears 78Pct as Key Dams Fill Up.


With Hetawane nearing 92%, Dhamni crossing 96%, and four Mumbai lakes already overflowing, the region's water security outlook has improved considerably.


If favourable monsoon conditions continue over the coming weeks, Mumbai and the surrounding metropolitan region could enter the post-monsoon season with healthy reservoir levels, ensuring a more reliable water supply for millions of residents.

Published By: Griha Realty

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