Reservoir · Tamil Nadu · India · CWC · SOUTHERN region
Aliyar
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
2026-10-22
Capacity in TMC
Aliyar Dam has a gross capacity of 3.4 TMC (95 MCM).
- Gross capacity
- 3.4 TMC (95 MCM)
- Live capacity
- 3.4 TMC (95 MCM)
- Current storage
- 0.00 TMC (0 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
0.0%vs 7 days ago
0.0 ppstable
vs 1 year ago
-97.2 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
0%of normal
0.0% full on 2026-10-22, against an average of 55.0% for October across 2 years of readings (-55.0 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Aliyar had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.92). 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. 10.481°N, 76.967°E · Open in Google Maps
About Aliyar
As of October 22, 2026, Aliyar is filled to 0.0% of its gross capacity, holding 0.00 TMC (0 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 (+0.0 pp), and it is 97.2 points below its level on the same date a year earlier.
Across the readings we hold for Aliyar — 77 data points between April 3, 2025 and October 22, 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 November and at its lowest around March.
It is operated by CWC primarily for multiple purposes. It is at 10.481°N, 76.967°E.
Key facts
- Current fill level
- 0.0% of total capacity
- Water stored
- 0.00 TMC (0 MCM)
- Total capacity
- 3.4 TMC (95 MCM)
- 7-day change
- No change
- Year-on-year
- ▼ 97.2 pp
- Primary use
- Multipurpose
- Operator
- CWC
- Coordinates
- 10.481°N, 76.967°E
- Last updated
- October 22, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 22 Oct 2026 | 0.0% | 0 |
| 15 Oct 2026 | 0.0% | 0 |
| 8 Oct 2026 | 0.0% | 0 |
| 1 Oct 2026 | 0.0% | 0 |
| 24 Sep 2026 | 4.2% | 4 |
| 17 Sep 2026 | 10.5% | 10 |
| 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 |