Reservoir · Kerala · India · CWC · SOUTHERN region
Idukki
Idukki Dam
62.5% full
Gross capacity
70.5 TMC (1,996 MCM)
Live capacity
51.8 TMC (1,467 MCM)
River
Periyar
Basin
West Flowing
Primary use
hydropower
Operator
KSEB
Coordinates
9.850°N, 76.967°E
Last updated
2026-09-11
Capacity in TMC
Idukki Dam has a gross capacity of 70.5 TMC (1,996 MCM), of which 51.8 TMC (1,467 MCM) is live storage; it is currently at 63% full, holding 44.1 TMC (1,248 MCM).
- Gross capacity
- 70.5 TMC (1,996 MCM)
- Live capacity
- 51.8 TMC (1,467 MCM)
- Current storage
- 44.1 TMC (1,248 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
62.5%vs 7 days ago
0.0%stable
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. 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. 9.850, 76.967 · Open in Google Maps
About Idukki Dam
As of September 11, 2026, Idukki Dam is filled to 62.5% of its total capacity, holding 44.1 TMC (1,248 MCM) of a gross 70.5 TMC (1,996 MCM). At this level the reservoir is within its normal operating range. Of that total, 51.8 TMC (1,467 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 Idukki Dam — 1 data points between September 11, 2026 and September 11, 2026 — the level has ranged from a low of 62.5% (September 11, 2026) to a high of 62.5% (September 11, 2026).
It is operated by KSEB primarily for hydroelectric power. It lies within the West Flowing basin at 9.850°N, 76.967°E.
Key facts
- Current fill level
- 62.5%
- Water stored
- 44.1 TMC (1,248 MCM)
- Total capacity
- 70.5 TMC (1,996 MCM)
- Usable capacity
- 51.8 TMC (1,467 MCM)
- 7-day change
- No change
- Primary use
- Hydroelectric power
- River
- Periyar
- River basin
- West Flowing
- Operator
- KSEB
- Coordinates
- 9.850°N, 76.967°E
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 62.5% | 1,248 |