Reservoir · Kerala · India · CWC
Thunacadavu
73.7% full
Gross capacity
0.57 TMC (16 MCM)
Live capacity
0.32 TMC (9 MCM)
River
Thunacadavu River
Basin
Chalakkudy
Primary use
irrigation
Operator
Tamil Nadu Water Resources Dept
Coordinates
10.434°N, 76.781°E
Last updated
2026-09-11
Capacity in TMC
Thunacadavu Dam has a gross capacity of 0.57 TMC (16 MCM), of which 0.32 TMC (9 MCM) is live storage; it is currently at 74% full, holding 0.42 TMC (12 MCM).
- Gross capacity
- 0.57 TMC (16 MCM)
- Live capacity
- 0.32 TMC (9 MCM)
- Current storage
- 0.42 TMC (12 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
73.7%vs 7 days ago
-0.7%losing
vs 1 year ago
N/A7-day trend
→stable
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. 10.434, 76.781 · Open in Google Maps
About Thunacadavu
As of September 11, 2026, Thunacadavu is filled to 73.7% of its total capacity, holding 0.42 TMC (12 MCM) of a gross 0.57 TMC (16 MCM). At this level the reservoir is within its normal operating range. Of that total, 0.32 TMC (9 MCM) is live storage.
Over the most recent week on record the fill level has held broadly steady (-0.7 pts).
Across the readings we hold for Thunacadavu — 6 data points between July 2, 2026 and September 11, 2026 — the level has ranged from a low of 73.7% (August 22, 2026) to a high of 77.5% (July 2, 2026).
It is operated by Tamil Nadu Water Resources Dept primarily for irrigation. It lies within the Chalakkudy basin at 10.434°N, 76.781°E.
Key facts
- Current fill level
- 73.7%
- Water stored
- 0.42 TMC (12 MCM)
- Total capacity
- 0.57 TMC (16 MCM)
- Usable capacity
- 0.32 TMC (9 MCM)
- 7-day change
- ▼ 0.7 pts
- Primary use
- Irrigation
- River
- Thunacadavu River
- River basin
- Chalakkudy
- Operator
- Tamil Nadu Water Resources Dept
- Coordinates
- 10.434°N, 76.781°E
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 73.7% | 12 |
| 4 Sep 2026 | 74.4% | 12 |
| 30 Aug 2026 | 74.7% | 12 |
| 22 Aug 2026 | 73.7% | 12 |
| 14 Aug 2026 | 74.1% | 12 |
| 2 Jul 2026 | 77.5% | 12 |