Reservoir · Tamil Nadu · India · Tamil Nadu WRD
Mettur (Stanley Reservoir)
Mettur Dam / Stanley Reservoir
22.6% of gross capacity
Gross capacity
93.5 TMC (2,647 MCM)
Live capacity
91.3 TMC (2,585 MCM)
Basin
Cauvery
Primary use
irrigation
Operator
TNPWD
Coordinates
11.783°N, 77.800°E
Last updated
2026-10-28
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 22.6% of gross capacity, holding 21.1 TMC (597 MCM) (23.1% of live capacity).
- Gross capacity
- 93.5 TMC (2,647 MCM)
- Live capacity
- 91.3 TMC (2,585 MCM)
- Current storage
- 21.1 TMC (597 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 Tamil Nadu WRD, which publishes million cubic metres. The percentage is labelled live or gross only when the stored volume matches that capacity.
Current fill
22.6%vs 22 Oct 2026
+1.4 ppgaining
vs 1 year ago
N/ATrend
↑rising
Drought context
Rain over the last three months · 11 October 2026
Severely dry
In the three months to 11 October 2026 the area around Mettur (Stanley Reservoir) had far less rain than normal, a shortfall seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.97). Rain, not storage. India drought figures →
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: Tamil Nadu WRD.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 11.783°N, 77.800°E · Open in Google Maps
About Mettur Dam / Stanley Reservoir
As of October 28, 2026, Mettur Dam / Stanley Reservoir is filled to 22.6% of its gross capacity, holding 21.1 TMC (597 MCM) of a gross 93.5 TMC (2,647 MCM). At this level the reservoir is low. Of that total, 91.3 TMC (2,585 MCM) is live storage.
Since October 22, 2026 the fill level has risen by 1.4 percentage points.
Across the readings we hold for Mettur Dam / Stanley Reservoir — 25 data points between June 25, 2026 and October 28, 2026 — the level has ranged from a low of 21.2% (October 15, 2026) to a high of 59.0% (September 4, 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
- 22.6% of total capacity
- Water stored
- 21.1 TMC (597 MCM)
- Total capacity
- 93.5 TMC (2,647 MCM)
- Usable capacity
- 91.3 TMC (2,585 MCM)
- Change since October 22, 2026
- ▲ 1.4 pp
- Primary use
- Irrigation
- River basin
- Cauvery
- Operator
- TNPWD
- Coordinates
- 11.783°N, 77.800°E
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 22.6% | 597 |
| 22 Oct 2026 | 21.2% | 561 |
| 15 Oct 2026 | 21.2% | 561 |
| 8 Oct 2026 | 32.9% | 871 |
| 1 Oct 2026 | 43.9% | 1,161 |
| 24 Sep 2026 | 48.2% | 1,277 |
| 18 Sep 2026 | 52.4% | 1,386 |
| 17 Sep 2026 | 51.4% | 1,361 |
| 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 |