Reservoir · Tamil Nadu · India · CWC · SOUTHERN region
Aliyar
10.5% full
Gross capacity
3.4 TMC (95 MCM)
Live capacity
3.4 TMC (95 MCM)
Primary use
multiple
Operator
CWC
Coordinates
10.481°N, 76.967°E
Last updated
2026-09-10
Capacity in TMC
Aliyar Dam has a gross capacity of 3.4 TMC (95 MCM); it is currently at 11% full, holding 0.35 TMC (10 MCM).
- Gross capacity
- 3.4 TMC (95 MCM)
- Live capacity
- 3.4 TMC (95 MCM)
- Current storage
- 0.35 TMC (10 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
10.5%vs 7 days ago
+1.1%gaining
vs 1 year ago
-88.5%year-over-year
7-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. 10.481, 76.967 · Open in Google Maps
About Aliyar
As of September 10, 2026, Aliyar is filled to 10.5% of its total capacity, holding 0.35 TMC (10 MCM) of a gross 3.4 TMC (95 MCM). At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (+1.1 pts), and it is 88.5 points below its level on the same date a year earlier.
Across the readings we hold for Aliyar — 72 data points between April 3, 2025 and September 10, 2026 — the level has ranged from a low of 0.0% (July 2, 2026) to a high of 100.0% (July 24, 2025). On average the reservoir is fullest around October and at its lowest around March.
It is operated by CWC primarily for multiple purposes.
Key facts
- Current fill level
- 10.5%
- Water stored
- 0.35 TMC (10 MCM)
- Total capacity
- 3.4 TMC (95 MCM)
- 7-day change
- ▲ 1.1 pts
- Year-on-year
- ▼ 88.5 pts
- Primary use
- Multipurpose
- Operator
- CWC
- Coordinates
- 10.481°N, 76.967°E
- Last updated
- September 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Sep 2026 | 10.5% | 10 |
| 3 Sep 2026 | 9.5% | 9 |
| 27 Aug 2026 | 6.3% | 6 |
| 20 Aug 2026 | 5.2% | 5 |
| 13 Aug 2026 | 3.2% | 3 |
| 6 Aug 2026 | 0.0% | 0 |
| 30 Jul 2026 | 0.0% | 0 |
| 23 Jul 2026 | 0.0% | 0 |
| 16 Jul 2026 | 0.0% | 0 |
| 9 Jul 2026 | 0.0% | 0 |
| 2 Jul 2026 | 0.0% | 0 |
| 25 Jun 2026 | 1.7% | 2 |