Reservoir · Kerala · India · CWC
Thunacadavu
90.7% 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
2026-09-24
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 91% full, holding 0.49 TMC (14 MCM).
- Gross capacity
- 0.57 TMC (16 MCM)
- Live capacity
- 0.32 TMC (9 MCM)
- Current storage
- 0.49 TMC (14 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
90.7%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Drought context
Rain over the last three months · 21 September 2026
Moderately dry
In the three months to 21 September 2026 the area around Thunacadavu 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 −1.40). Rain, not storage. India drought figures →
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 24, 2026, Thunacadavu is filled to 90.7% of its total capacity, holding 0.49 TMC (14 MCM) of a gross 0.57 TMC (16 MCM). At this level the reservoir is high. 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 (+0.0 pts).
Across the readings we hold for Thunacadavu — 1 data points between September 24, 2026 and September 24, 2026 — the level has ranged from a low of 90.7% (September 24, 2026) to a high of 90.7% (September 24, 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
- 90.7%
- Water stored
- 0.49 TMC (14 MCM)
- Total capacity
- 0.57 TMC (16 MCM)
- Usable capacity
- 0.32 TMC (9 MCM)
- 7-day change
- No change
- 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 24, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 24 Sep 2026 | 90.7% | 14 |