BATALHA
Goiás · PARANAIBA
Capacity
1,781.61 hm³
Coordinates
-17.346°N, 47.489°W
Operator
ONS
83.2% full
Current fill
83.2%vs 7 days ago
-1.1%losing
vs 1 year ago
+4.2%year-over-year
7-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 July 28, 2026, BATALHA is filled to 83.2% of its total capacity, holding roughly 1,124 hm³ of water out of a maximum 1,782 hm³. At this level the reservoir is high. 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 (-1.1 pts), and it is 4.2 points above its level on the same date a year earlier.
Across the readings we hold for BATALHA — 52 data points between August 15, 2025 and July 28, 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
- 83.2%
- Water stored
- 1,124 hm³
- Total capacity
- 1,782 hm³
- Usable capacity
- 1,352 hm³
- 7-day change
- ▼ 1.1 pts
- Year-on-year
- ▲ 4.2 pts
- Primary use
- Hydroelectric power
- River
- SAO MARCOS
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 17.346°S, 47.489°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 83.2% | 1,124 |
| 24 Jul 2026 | 84.3% | 1,139 |
| 17 Jul 2026 | 86.6% | 1,171 |
| 10 Jul 2026 | 88.7% | 1,198 |
| 3 Jul 2026 | 90.3% | 1,221 |
| 26 Jun 2026 | 92.1% | 1,245 |
| 19 Jun 2026 | 93.7% | 1,267 |
| 12 Jun 2026 | 94.2% | 1,273 |
| 5 Jun 2026 | 94.7% | 1,280 |
| 29 May 2026 | 95.2% | 1,286 |
| 22 May 2026 | 95.5% | 1,291 |
| 15 May 2026 | 96.4% | 1,303 |
Frequently asked questions
What is the current water level of BATALHA?
As of July 28, 2026, BATALHA is at 83.2% of its capacity, holding approximately 1,124 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is BATALHA reservoir full?
No. As of July 28, 2026, BATALHA is high at 83.2% of its capacity, so it is not full.
Is the water level at BATALHA rising or falling?
The level at BATALHA has been broadly stable over the latest week on record (-1.1 points).
How much water can BATALHA hold?
BATALHA has a total capacity of 1,782 hm³, of which about 1,352 hm³ is usable storage.
Where is BATALHA reservoir located?
BATALHA is located in Goiás, Brazil, within the PARANAIBA basin (coordinates 17.346°S, 47.489°W).
What is BATALHA used for?
BATALHA is used primarily for hydroelectric power, and is managed by ONS.