Reservoir · Karnataka · India · CWC · SOUTHERN region
Hemavathy
Hemavathy Dam
36.0% 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
2026-10-22
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 36% full, holding 11.8 TMC (334 MCM).
- Gross capacity
- 37.0 TMC (1,049 MCM)
- Live capacity
- 30.3 TMC (859 MCM)
- Current storage
- 11.8 TMC (334 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
36.0%vs 7 days ago
+1.5 ppgaining
vs 1 year ago
-62.5 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
53%of normal
36.0% full on 2026-10-22, against an average of 68.0% for October across 4 years of readings (-32.0 points).
Rain over the last three months · 11 October 2026
Extremely dry
In the three months to 11 October 2026 the area around Hemavathy had extremely little rain for the season, a shortfall seen about one year in forty. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −2.55). 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. 13.050°N, 76.267°E · Open in Google Maps
About Hemavathy Dam
As of October 22, 2026, Hemavathy Dam has a published fill of 36.0%, holding 11.8 TMC (334 MCM). Gross capacity is 37.0 TMC (1,049 MCM). At this level the reservoir is low. Of that total, 30.3 TMC (859 MCM) is live storage.
Over the most recent week on record the fill level has risen by 1.5 percentage points, and it is 62.5 points below its level on the same date a year earlier.
Across the readings we hold for Hemavathy Dam — 171 data points between June 8, 2023 and October 22, 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
- 36.0%
- Water stored
- 11.8 TMC (334 MCM)
- Total capacity
- 37.0 TMC (1,049 MCM)
- Usable capacity
- 30.3 TMC (859 MCM)
- 7-day change
- ▲ 1.5 pp
- Year-on-year
- ▼ 62.5 pp
- Primary use
- Irrigation
- River
- Hemavathy
- River basin
- Cauvery
- Operator
- KA
- Coordinates
- 13.050°N, 76.267°E
- Last updated
- October 22, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 22 Oct 2026 | 36.0% | 334 |
| 15 Oct 2026 | 34.5% | 320 |
| 8 Oct 2026 | 33.7% | 312 |
| 1 Oct 2026 | 33.1% | 307 |
| 24 Sep 2026 | 41.2% | 382 |
| 17 Sep 2026 | 44.1% | 409 |
| 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 |