Reservoir · Kerala · India · CWC · SOUTHERN region
Periyar
36.4% full
Gross capacity
6.1 TMC (173 MCM)
Live capacity
6.1 TMC (173 MCM)
Primary use
multiple
Operator
CWC
Coordinates
9.527°N, 77.144°E
Last updated
2026-09-10
Capacity in TMC
Periyar Dam has a gross capacity of 6.1 TMC (173 MCM); it is currently at 36% full, holding 2.2 TMC (63 MCM).
- Gross capacity
- 6.1 TMC (173 MCM)
- Live capacity
- 6.1 TMC (173 MCM)
- Current storage
- 2.2 TMC (63 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
36.4%vs 7 days ago
-5.8%losing
vs 1 year ago
+20.8%year-over-year
7-day trend
↓falling
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. 9.527, 77.144 · Open in Google Maps
About Periyar
As of September 10, 2026, Periyar is filled to 36.4% of its total capacity, holding 2.2 TMC (63 MCM) of a gross 6.1 TMC (173 MCM). At this level the reservoir is low.
Over the most recent week on record the fill level has fallen by 5.8 percentage points, and it is 20.8 points above its level on the same date a year earlier.
Across the readings we hold for Periyar — 166 data points between June 8, 2023 and September 10, 2026 — the level has ranged from a low of 7.1% (April 30, 2026) to a high of 100.0% (December 21, 2023). On average the reservoir is fullest around December and at its lowest around April.
It is operated by CWC primarily for multiple purposes.
Key facts
- Current fill level
- 36.4%
- Water stored
- 2.2 TMC (63 MCM)
- Total capacity
- 6.1 TMC (173 MCM)
- 7-day change
- ▼ 5.8 pts
- Year-on-year
- ▲ 20.8 pts
- Primary use
- Multipurpose
- Operator
- CWC
- Coordinates
- 9.527°N, 77.144°E
- Last updated
- September 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Sep 2026 | 36.4% | 63 |
| 3 Sep 2026 | 42.2% | 73 |
| 27 Aug 2026 | 42.8% | 74 |
| 20 Aug 2026 | 43.4% | 75 |
| 13 Aug 2026 | 44.5% | 77 |
| 6 Aug 2026 | 39.3% | 68 |
| 30 Jul 2026 | 12.2% | 21 |
| 23 Jul 2026 | 13.2% | 23 |
| 16 Jul 2026 | 14.2% | 25 |
| 9 Jul 2026 | 13.7% | 24 |
| 2 Jul 2026 | 11.9% | 21 |
| 25 Jun 2026 | 14.0% | 24 |