Reservoir · Karnataka · India · CWC · SOUTHERN region
Hemavathy
Hemavathy Dam
59.1% full
Gross capacity
37.0 TMC (1,049 MCM)
Live capacity
30.3 TMC (859 MCM)
River
Hemavathy
Basin
Cauvery
Primary use
irrigation
Operator
KA
Coordinates
13.050°N, 76.267°E
Last updated
2026-09-10
Capacity in TMC
Hemavathy Dam has a gross capacity of 37.0 TMC (1,049 MCM), of which 30.3 TMC (859 MCM) is live storage; it is currently at 59% full, holding 19.4 TMC (548 MCM).
- Gross capacity
- 37.0 TMC (1,049 MCM)
- Live capacity
- 30.3 TMC (859 MCM)
- Current storage
- 19.4 TMC (548 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
59.1%vs 7 days ago
-11.9%losing
vs 1 year ago
+3.5%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. 13.050, 76.267 · Open in Google Maps
About Hemavathy Dam
As of September 10, 2026, Hemavathy Dam is filled to 59.1% of its total capacity, holding 19.4 TMC (548 MCM) of a gross 37.0 TMC (1,049 MCM). At this level the reservoir is within its normal operating range. Of that total, 30.3 TMC (859 MCM) is live storage.
Over the most recent week on record the fill level has fallen by 11.9 percentage points, and it is 3.5 points above its level on the same date a year earlier.
Across the readings we hold for Hemavathy Dam — 166 data points between June 8, 2023 and September 10, 2026 — the level has ranged from a low of 14.0% (May 16, 2024) to a high of 100.0% (August 8, 2024). On average the reservoir is fullest around August and at its lowest around May.
It is operated by KA primarily for irrigation. It lies within the Cauvery basin at 13.050°N, 76.267°E.
Key facts
- Current fill level
- 59.1%
- Water stored
- 19.4 TMC (548 MCM)
- Total capacity
- 37.0 TMC (1,049 MCM)
- Usable capacity
- 30.3 TMC (859 MCM)
- 7-day change
- ▼ 11.9 pts
- Year-on-year
- ▲ 3.5 pts
- Primary use
- Irrigation
- River
- Hemavathy
- River basin
- Cauvery
- Operator
- KA
- Coordinates
- 13.050°N, 76.267°E
- Last updated
- September 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Sep 2026 | 59.1% | 548 |
| 3 Sep 2026 | 71.0% | 658 |
| 27 Aug 2026 | 78.5% | 728 |
| 20 Aug 2026 | 84.2% | 781 |
| 13 Aug 2026 | 83.1% | 770 |
| 6 Aug 2026 | 76.2% | 706 |
| 30 Jul 2026 | 61.8% | 573 |
| 23 Jul 2026 | 56.2% | 521 |
| 16 Jul 2026 | 54.5% | 505 |
| 9 Jul 2026 | 48.1% | 445 |
| 2 Jul 2026 | 32.4% | 300 |
| 25 Jun 2026 | 32.1% | 297 |