BATALHA
Goiás · PARANAIBA
Capacity
1,781.61 hm³
Coordinates
-17.346°N, 47.489°W
Operator
ONS
67.2% full
Current fill
67.2%vs 7 days ago
-0.6%losing
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 1,781.61 hm³ |
| Usable capacity | 1,351.53 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | SAO MARCOS |
| Province | Goiás |
| River basin | PARANAIBA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -17.346, -47.489 · Open in Google Maps
About BATALHA
As of September 9, 2026, BATALHA is filled to 67.2% of its total capacity, holding roughly 908 hm³ of water out of a maximum 1,782 hm³. At this level the reservoir is within its normal operating range. Of that total, about 1,352 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts).
Across the readings we hold for BATALHA — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 36.5% (December 12, 2025) to a high of 97.1% (May 1, 2026). On average the reservoir is fullest around May and at its lowest around December.
It is operated by ONS primarily for hydroelectric power. It lies within the PARANAIBA basin at 17.346°S, 47.489°W.
Key facts
- Current fill level
- 67.2%
- Water stored
- 908 hm³
- Total capacity
- 1,782 hm³
- Usable capacity
- 1,352 hm³
- 7-day change
- ▼ 0.6 pts
- Primary use
- Hydroelectric power
- River
- SAO MARCOS
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 17.346°S, 47.489°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 67.2% | 908 |
| 4 Sep 2026 | 67.8% | 917 |
| 28 Aug 2026 | 71.0% | 960 |
| 21 Aug 2026 | 74.3% | 1,005 |
| 14 Aug 2026 | 76.6% | 1,035 |
| 7 Aug 2026 | 79.3% | 1,072 |
| 31 Jul 2026 | 81.8% | 1,106 |
| 24 Jul 2026 | 84.3% | 1,139 |
| 17 Jul 2026 | 86.6% | 1,170 |
| 10 Jul 2026 | 88.7% | 1,198 |
| 3 Jul 2026 | 90.3% | 1,221 |
| 26 Jun 2026 | 92.1% | 1,245 |