Reservoir · Kerala · India · CWC · SOUTHERN region
Idamalayar
Idamalayar Dam
68.9% full
Gross capacity
38.8 TMC (1,098 MCM)
Live capacity
36.2 TMC (1,026 MCM)
River
Periyar
Basin
West Flowing
Primary use
hydropower
Operator
KSEB
Coordinates
10.200°N, 76.717°E
Last updated
2026-09-11
Capacity in TMC
Idamalayar Dam has a gross capacity of 38.8 TMC (1,098 MCM), of which 36.2 TMC (1,026 MCM) is live storage; it is currently at 69% full, holding 26.7 TMC (756 MCM).
- Gross capacity
- 38.8 TMC (1,098 MCM)
- Live capacity
- 36.2 TMC (1,026 MCM)
- Current storage
- 26.7 TMC (756 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
68.9%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. 10.200, 76.717 · Open in Google Maps
About Idamalayar Dam
As of September 11, 2026, Idamalayar Dam is filled to 68.9% of its total capacity, holding 26.7 TMC (756 MCM) of a gross 38.8 TMC (1,098 MCM). At this level the reservoir is within its normal operating range. Of that total, 36.2 TMC (1,026 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 Idamalayar Dam — 1 data points between September 11, 2026 and September 11, 2026 — the level has ranged from a low of 68.9% (September 11, 2026) to a high of 68.9% (September 11, 2026).
It is operated by KSEB primarily for hydroelectric power. It lies within the West Flowing basin at 10.200°N, 76.717°E.
Key facts
- Current fill level
- 68.9%
- Water stored
- 26.7 TMC (756 MCM)
- Total capacity
- 38.8 TMC (1,098 MCM)
- Usable capacity
- 36.2 TMC (1,026 MCM)
- 7-day change
- No change
- Primary use
- Hydroelectric power
- River
- Periyar
- River basin
- West Flowing
- Operator
- KSEB
- Coordinates
- 10.200°N, 76.717°E
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 68.9% | 756 |