Reservoir · Tamil Nadu · India · CWC · SOUTHERN region
Mettur (Stanley Reservoir)
Mettur Dam / Stanley Reservoir
56.3% full
Gross capacity
93.5 TMC (2,647 MCM)
Live capacity
91.3 TMC (2,585 MCM)
River
Cauvery
Basin
Cauvery
Primary use
irrigation
Operator
TNPWD
Coordinates
11.783°N, 77.800°E
Last updated
2026-09-11
Capacity in TMC
Mettur (Stanley Reservoir) has a gross capacity of 93.5 TMC (2,647 MCM), of which 91.3 TMC (2,585 MCM) is live storage; it is currently at 56% full, holding 52.6 TMC (1,490 MCM).
- Gross capacity
- 93.5 TMC (2,647 MCM)
- Live capacity
- 91.3 TMC (2,585 MCM)
- Current storage
- 52.6 TMC (1,490 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
56.3%vs 7 days ago
-2.7%losing
vs 1 year ago
N/A7-day trend
↓falling
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: CWC (Central Water Commission) Weekly Storage Bulletin, India. CWC region: SOUTHERN.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 11.783, 77.800 · Open in Google Maps
About Mettur Dam / Stanley Reservoir
As of September 11, 2026, Mettur Dam / Stanley Reservoir is filled to 56.3% of its total capacity, holding 52.6 TMC (1,490 MCM) of a gross 93.5 TMC (2,647 MCM). At this level the reservoir is within its normal operating range. Of that total, 91.3 TMC (2,585 MCM) is live storage.
Over the most recent week on record the fill level has fallen by 2.7 percentage points.
Across the readings we hold for Mettur Dam / Stanley Reservoir — 18 data points between May 31, 2026 and September 11, 2026 — the level has ranged from a low of 38.5% (July 30, 2026) to a high of 80.9% (May 31, 2026).
It is operated by TNPWD primarily for irrigation. It lies within the Cauvery basin at 11.783°N, 77.800°E.
Key facts
- Current fill level
- 56.3%
- Water stored
- 52.6 TMC (1,490 MCM)
- Total capacity
- 93.5 TMC (2,647 MCM)
- Usable capacity
- 91.3 TMC (2,585 MCM)
- 7-day change
- ▼ 2.7 pts
- Primary use
- Irrigation
- River
- Cauvery
- River basin
- Cauvery
- Operator
- TNPWD
- Coordinates
- 11.783°N, 77.800°E
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 56.3% | 1,490 |
| 10 Sep 2026 | 57.3% | 1,516 |
| 4 Sep 2026 | 59.0% | 1,562 |
| 3 Sep 2026 | 59.0% | 1,561 |
| 30 Aug 2026 | 56.7% | 1,501 |
| 27 Aug 2026 | 55.4% | 1,467 |
| 22 Aug 2026 | 51.2% | 1,355 |
| 20 Aug 2026 | 49.6% | 1,312 |
| 14 Aug 2026 | 45.6% | 1,208 |
| 13 Aug 2026 | 45.2% | 1,197 |
| 6 Aug 2026 | 40.4% | 1,069 |
| 30 Jul 2026 | 38.5% | 1,019 |