Reservoir · Tamil Nadu · India · Tamil Nadu WRD
Sathanur
Sathanur Dam
0.5% of live capacity
Gross capacity
7.3 TMC (207 MCM)
Live capacity
7.0 TMC (199 MCM)
River
Ponnaiyar
Basin
East Flowing
Primary use
irrigation
Operator
TNPWD
Coordinates
12.167°N, 79.167°E
Last updated
2026-10-28
Capacity in TMC
Sathanur Dam has a gross capacity of 7.3 TMC (207 MCM), of which 7.0 TMC (199 MCM) is live storage.
- Gross capacity
- 7.3 TMC (207 MCM)
- Live capacity
- 7.0 TMC (199 MCM)
- Current storage
- 0.04 TMC (1 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
0.5%vs 22 Oct 2026
-40.6 pplosing
vs 1 year ago
N/ATrend
↓falling
Drought context
Rain over the last three months · 11 October 2026
Moderately dry
In the three months to 11 October 2026 the area around Sathanur had well below normal rain, a shortfall seen about one year in six. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.46). 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. 12.167°N, 79.167°E · Open in Google Maps
About Sathanur Dam
As of October 28, 2026, Sathanur Dam is at 0.5% of useful capacity, holding 0.04 TMC (1 MCM) of 7.0 TMC (199 MCM). Of the gross 7.3 TMC (207 MCM), that is 0.5%. At this level the reservoir is critically low.
Since October 22, 2026 the fill level has fallen by 40.6 percentage points.
Across the readings we hold for Sathanur Dam — 21 data points between June 25, 2026 and October 28, 2026 — the level has ranged from a low of 0.5% (October 28, 2026) to a high of 41.1% (October 22, 2026).
It is operated by TNPWD primarily for irrigation. It lies within the East Flowing basin at 12.167°N, 79.167°E.
Key facts
- Current fill level
- 0.5% of useful capacity
- Water stored
- 0.04 TMC (1 MCM)
- Total capacity
- 7.3 TMC (207 MCM)
- Usable capacity
- 7.0 TMC (199 MCM)
- Change since October 22, 2026
- ▼ 40.6 pp
- Primary use
- Irrigation
- River
- Ponnaiyar
- River basin
- East Flowing
- Operator
- TNPWD
- Coordinates
- 12.167°N, 79.167°E
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 0.5% | 1 |
| 22 Oct 2026 | 41.1% | 85 |
| 15 Oct 2026 | 32.9% | 68 |
| 8 Oct 2026 | 30.4% | 63 |
| 1 Oct 2026 | 29.9% | 62 |
| 24 Sep 2026 | 28.3% | 59 |
| 17 Sep 2026 | 27.6% | 57 |
| 10 Sep 2026 | 28.0% | 58 |
| 3 Sep 2026 | 28.0% | 58 |
| 29 Aug 2026 | 28.3% | 59 |
| 27 Aug 2026 | 28.5% | 59 |
| 21 Aug 2026 | 28.7% | 60 |