Reservoir · Kerala · India · CWC · SOUTHERN region
Periyar
28.9% of gross capacity
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
2026-10-22
Capacity in TMC
Periyar Dam has a gross capacity of 6.1 TMC (173 MCM); it is currently at 28.9% of gross capacity, holding 1.8 TMC (50 MCM).
- Gross capacity
- 6.1 TMC (173 MCM)
- Live capacity
- 6.1 TMC (173 MCM)
- Current storage
- 1.8 TMC (50 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 CWC, which publishes million cubic metres. The percentage is labelled live or gross only when the stored volume matches that capacity.
Current fill
28.9%vs 7 days ago
+4.0 ppgaining
vs 1 year ago
-71.1 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
57%of normal
28.9% full on 2026-10-22, against an average of 51.0% for October across 4 years of readings (-22.1 points).
Rain over the last three months · 11 October 2026
Moderately dry
In the three months to 11 October 2026 the area around Periyar 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 −1.12). Rain, not storage. India drought figures →
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: CWC. 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°N, 77.144°E · Open in Google Maps
About Periyar
As of October 22, 2026, Periyar is filled to 28.9% of its gross capacity, holding 1.8 TMC (50 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 risen by 4.0 percentage points, and it is 71.1 points below its level on the same date a year earlier.
Across the readings we hold for Periyar — 171 data points between June 8, 2023 and October 22, 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. It is at 9.527°N, 77.144°E.
Key facts
- Current fill level
- 28.9% of total capacity
- Water stored
- 1.8 TMC (50 MCM)
- Total capacity
- 6.1 TMC (173 MCM)
- 7-day change
- ▲ 4.0 pp
- Year-on-year
- ▼ 71.1 pp
- Primary use
- Multipurpose
- Operator
- CWC
- Coordinates
- 9.527°N, 77.144°E
- Last updated
- October 22, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 22 Oct 2026 | 28.9% | 50 |
| 15 Oct 2026 | 24.9% | 43 |
| 8 Oct 2026 | 24.9% | 43 |
| 1 Oct 2026 | 26.0% | 45 |
| 24 Sep 2026 | 27.8% | 48 |
| 17 Sep 2026 | 31.8% | 55 |
| 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 |