Reservoir · Tamil Nadu · India · CWC · SOUTHERN region
Vaigai
Vaigai Dam
15.1% full
Gross capacity
8.1 TMC (230 MCM)
Live capacity
6.4 TMC (181 MCM)
River
Vaigai
Basin
East Flowing
Primary use
irrigation
Operator
TNPWD
Coordinates
10.033°N, 77.583°E
Last updated
2026-09-10
Capacity in TMC
Vaigai Dam has a gross capacity of 8.1 TMC (230 MCM), of which 6.4 TMC (181 MCM) is live storage; it is currently at 15% full, holding 0.92 TMC (26 MCM).
- Gross capacity
- 8.1 TMC (230 MCM)
- Live capacity
- 6.4 TMC (181 MCM)
- Current storage
- 0.92 TMC (26 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
15.1%vs 7 days ago
+1.8%gaining
vs 1 year ago
-34.3%year-over-year
7-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. 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. 10.033, 77.583 · Open in Google Maps
About Vaigai Dam
As of September 10, 2026, Vaigai Dam is filled to 15.1% of its total capacity, holding 0.92 TMC (26 MCM) of a gross 8.1 TMC (230 MCM). At this level the reservoir is critically low. Of that total, 6.4 TMC (181 MCM) is live storage.
Over the most recent week on record the fill level has risen by 1.8 percentage points, and it is 34.3 points below its level on the same date a year earlier.
Across the readings we hold for Vaigai Dam — 166 data points between June 8, 2023 and September 10, 2026 — the level has ranged from a low of 1.7% (May 29, 2026) to a high of 100.0% (January 11, 2024). On average the reservoir is fullest around November and at its lowest around May.
It is operated by TNPWD primarily for irrigation. It lies within the East Flowing basin at 10.033°N, 77.583°E.
Key facts
- Current fill level
- 15.1%
- Water stored
- 0.92 TMC (26 MCM)
- Total capacity
- 8.1 TMC (230 MCM)
- Usable capacity
- 6.4 TMC (181 MCM)
- 7-day change
- ▲ 1.8 pts
- Year-on-year
- ▼ 34.3 pts
- Primary use
- Irrigation
- River
- Vaigai
- River basin
- East Flowing
- Operator
- TNPWD
- Coordinates
- 10.033°N, 77.583°E
- Last updated
- September 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Sep 2026 | 15.1% | 26 |
| 3 Sep 2026 | 13.4% | 23 |
| 27 Aug 2026 | 12.2% | 21 |
| 20 Aug 2026 | 11.0% | 19 |
| 13 Aug 2026 | 9.9% | 17 |
| 6 Aug 2026 | 9.3% | 16 |
| 30 Jul 2026 | 8.9% | 15 |
| 23 Jul 2026 | 9.0% | 15 |
| 16 Jul 2026 | 9.3% | 16 |
| 9 Jul 2026 | 8.7% | 15 |
| 2 Jul 2026 | 7.8% | 14 |
| 25 Jun 2026 | 6.8% | 12 |