Reservoir · Tamil Nadu · India · CWC
Cholavaram
13.8% full
Gross capacity
1.1 TMC (31 MCM)
Live capacity
1.1 TMC (31 MCM)
Basin
Chennai
Primary use
water supply
Operator
Tamil Nadu Water Resources Dept
Coordinates
13.222°N, 80.154°E
Last updated
2026-09-11
Capacity in TMC
Cholavaram Dam has a gross capacity of 1.1 TMC (31 MCM); it is currently at 14% full, holding 0.14 TMC (4 MCM).
- Gross capacity
- 1.1 TMC (31 MCM)
- Live capacity
- 1.1 TMC (31 MCM)
- Current storage
- 0.14 TMC (4 MCM)
TMC is thousand million cubic feet, the unit used in Indian water reporting. 1 TMC = 28.3168 million cubic metres (MCM). Figures are converted from the Central Water Commission bulletin, which publishes million cubic metres.
Current fill
13.8%vs 7 days ago
+2.0%gaining
vs 1 year ago
N/A7-day trend
↑rising
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: CWC (Central Water Commission) Weekly Storage Bulletin, India.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 13.222, 80.154 · Open in Google Maps
About Cholavaram
As of September 11, 2026, Cholavaram is filled to 13.8% of its total capacity, holding 0.14 TMC (4 MCM) of a gross 1.1 TMC (31 MCM). At this level the reservoir is critically low.
Over the most recent week on record the fill level has risen by 2.0 percentage points.
Across the readings we hold for Cholavaram — 6 data points between July 2, 2026 and September 11, 2026 — the level has ranged from a low of 8.3% (July 2, 2026) to a high of 13.8% (September 11, 2026).
It is operated by Tamil Nadu Water Resources Dept primarily for water supply. It lies within the Chennai basin at 13.222°N, 80.154°E.
Key facts
- Current fill level
- 13.8%
- Water stored
- 0.14 TMC (4 MCM)
- Total capacity
- 1.1 TMC (31 MCM)
- 7-day change
- ▲ 2.0 pts
- Primary use
- Water supply
- River basin
- Chennai
- Operator
- Tamil Nadu Water Resources Dept
- Coordinates
- 13.222°N, 80.154°E
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 13.8% | 4 |
| 4 Sep 2026 | 11.8% | 4 |
| 30 Aug 2026 | 11.8% | 4 |
| 22 Aug 2026 | 10.6% | 3 |
| 14 Aug 2026 | 10.6% | 3 |
| 2 Jul 2026 | 8.3% | 3 |