Reservoir · Karnataka · India · CWC · SOUTHERN region
Tattihalla
21.8% of gross capacity
Gross capacity
8.8 TMC (249 MCM)
Live capacity
8.8 TMC (249 MCM)
Primary use
multiple
Operator
CWC
Coordinates
15.117°N, 74.785°E
Last updated
2026-10-22
Capacity in TMC
Tattihalla Dam has a gross capacity of 8.8 TMC (249 MCM); it is currently at 21.8% of gross capacity, holding 1.9 TMC (54 MCM).
- Gross capacity
- 8.8 TMC (249 MCM)
- Live capacity
- 8.8 TMC (249 MCM)
- Current storage
- 1.9 TMC (54 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
21.8%vs 7 days ago
+0.3 ppgaining
vs 1 year ago
-23.2 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
59%of normal
21.8% full on 2026-10-22, against an average of 37.0% for October across 4 years of readings (-15.2 points).
Rain over the last three months · 11 October 2026
Extremely dry
In the three months to 11 October 2026 the area around Tattihalla 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 −3.13). 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. 15.117°N, 74.785°E · Open in Google Maps
About Tattihalla
As of October 22, 2026, Tattihalla is filled to 21.8% of its gross capacity, holding 1.9 TMC (54 MCM) of a gross 8.8 TMC (249 MCM). At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (+0.3 pp), and it is 23.2 points below its level on the same date a year earlier.
Across the readings we hold for Tattihalla — 171 data points between June 5, 2023 and October 22, 2026 — the level has ranged from a low of 0.0% (June 5, 2023) to a high of 88.0% (September 5, 2024). On average the reservoir is fullest around August and at its lowest around March.
It is operated by CWC primarily for multiple purposes. It is at 15.117°N, 74.785°E.
Key facts
- Current fill level
- 21.8% of total capacity
- Water stored
- 1.9 TMC (54 MCM)
- Total capacity
- 8.8 TMC (249 MCM)
- 7-day change
- ▲ 0.3 pp
- Year-on-year
- ▼ 23.2 pp
- Primary use
- Multipurpose
- Operator
- CWC
- Coordinates
- 15.117°N, 74.785°E
- Last updated
- October 22, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 22 Oct 2026 | 21.8% | 54 |
| 15 Oct 2026 | 21.5% | 53 |
| 8 Oct 2026 | 21.5% | 53 |
| 1 Oct 2026 | 21.5% | 53 |
| 24 Sep 2026 | 21.5% | 53 |
| 17 Sep 2026 | 21.4% | 53 |
| 10 Sep 2026 | 21.3% | 53 |
| 3 Sep 2026 | 20.2% | 50 |
| 27 Aug 2026 | 19.6% | 49 |
| 20 Aug 2026 | 18.4% | 46 |
| 13 Aug 2026 | 16.7% | 42 |
| 6 Aug 2026 | 13.6% | 34 |