Reservoir · Kerala · India · CWC · SOUTHERN region
Idamalayar
Idamalayar Dam
39.7% full
Total capacity
1,098 hm³
Live storage
1,026 hm³
River
Periyar
Basin
West Flowing
Primary use
hydropower
Operator
KSEB
Coordinates
10.200°N, 76.717°E
Last updated
2026-07-30
Current fill
39.7%vs 7 days ago
+2.3%gaining
vs 1 year ago
N/A7-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. 10.200, 76.717 · Open in Google Maps
About Idamalayar Dam
As of July 30, 2026, Idamalayar Dam is filled to 39.7% of its total capacity, holding roughly 404 hm³ of water out of a maximum 1,098 hm³. At this level the reservoir is low. Of that total, about 1,026 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 2.3 percentage points.
Across the readings we hold for Idamalayar Dam — 9 data points between May 31, 2026 and July 30, 2026 — the level has ranged from a low of 26.4% (June 25, 2026) to a high of 41.4% (May 31, 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
- 39.7%
- Water stored
- 404 hm³
- Total capacity
- 1,098 hm³
- Usable capacity
- 1,026 hm³
- 7-day change
- ▲ 2.3 pts
- Primary use
- Hydroelectric power
- River
- Periyar
- River basin
- West Flowing
- Operator
- KSEB
- Coordinates
- 10.200°N, 76.717°E
- Last updated
- July 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Jul 2026 | 39.7% | 404 |
| 23 Jul 2026 | 37.4% | 381 |
| 22 Jul 2026 | 37.1% | 408 |
| 16 Jul 2026 | 36.5% | 371 |
| 9 Jul 2026 | 33.1% | 337 |
| 6 Jul 2026 | 31.2% | 343 |
| 2 Jul 2026 | 28.1% | 286 |
| 25 Jun 2026 | 26.4% | 269 |
| 31 May 2026 | 41.4% | 421 |
Frequently asked questions
What is the current water level of Idamalayar Dam?
As of July 30, 2026, Idamalayar Dam is at 39.7% of its capacity, holding approximately 404 hm³ of water, according to CWC data.
Is Idamalayar Dam reservoir full?
No. As of July 30, 2026, Idamalayar Dam is low at 39.7% of its capacity, so it is not full.
Is the water level at Idamalayar Dam rising or falling?
The level at Idamalayar Dam is rising — it gained 2.3 percentage points over the latest week on record.
How much water can Idamalayar Dam hold?
Idamalayar Dam has a total capacity of 1,098 hm³, of which about 1,026 hm³ is usable storage.
Where is Idamalayar Dam reservoir located?
Idamalayar Dam is located in Kerala, India, within the West Flowing basin (coordinates 10.200°N, 76.717°E).
What is Idamalayar Dam used for?
Idamalayar Dam is used primarily for hydroelectric power, and is managed by KSEB.