BALBINA
Amazonas · AMAZONAS
Capacity
20,006.22 hm³
Coordinates
-1.914°N, 59.474°W
Operator
ONS
72.3% full
Current fill
72.3%vs 7 days ago
-2.2%losing
vs 1 year ago
N/A7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 20,006.22 hm³ |
| Usable capacity | 10,209.79 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | UATUMA |
| Province | Amazonas |
| River basin | AMAZONAS |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -1.914, -59.474 · Open in Google Maps
About BALBINA
As of September 9, 2026, BALBINA is filled to 72.3% of its total capacity, holding roughly 7,385 hm³ of water out of a maximum 20,006 hm³. At this level the reservoir is within its normal operating range. Of that total, about 10,210 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 2.2 percentage points.
Across the readings we hold for BALBINA — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 46.1% (March 27, 2026) to a high of 93.0% (July 3, 2026). On average the reservoir is fullest around July and at its lowest around March.
It is operated by ONS primarily for hydroelectric power. It lies within the AMAZONAS basin at 1.914°S, 59.474°W.
Key facts
- Current fill level
- 72.3%
- Water stored
- 7,385 hm³
- Total capacity
- 20,006 hm³
- Usable capacity
- 10,210 hm³
- 7-day change
- ▼ 2.2 pts
- Primary use
- Hydroelectric power
- River
- UATUMA
- River basin
- AMAZONAS
- Operator
- ONS
- Coordinates
- 1.914°S, 59.474°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 72.3% | 7,385 |
| 4 Sep 2026 | 74.5% | 7,607 |
| 28 Aug 2026 | 77.7% | 7,932 |
| 21 Aug 2026 | 80.1% | 8,182 |
| 14 Aug 2026 | 83.1% | 8,481 |
| 7 Aug 2026 | 86.1% | 8,793 |
| 31 Jul 2026 | 88.1% | 8,995 |
| 24 Jul 2026 | 89.9% | 9,175 |
| 17 Jul 2026 | 91.5% | 9,340 |
| 10 Jul 2026 | 92.4% | 9,436 |
| 3 Jul 2026 | 93.0% | 9,495 |
| 26 Jun 2026 | 92.2% | 9,411 |