C.BRANCO-1
Minas Gerais · PARANAIBA
Capacity
241.13 hm³
Coordinates
-18.788°N, 48.146°W
Operator
ONS
25.4% full
Current fill
25.4%vs 7 days ago
-32.7%losing
vs 1 year ago
N/A7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 241.13 hm³ |
| Usable capacity | 12.86 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | ARAGUARI-MG |
| Province | Minas Gerais |
| River basin | PARANAIBA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -18.788, -48.146 · Open in Google Maps
About C.BRANCO-1
As of September 9, 2026, C.BRANCO-1 is filled to 25.4% of its total capacity, holding roughly 3 hm³ of water out of a maximum 241 hm³. At this level the reservoir is low. Of that total, about 13 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 32.7 percentage points.
Across the readings we hold for C.BRANCO-1 — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 2.8% (September 26, 2025) to a high of 76.8% (November 14, 2025). On average the reservoir is fullest around November and at its lowest around April.
It is operated by ONS primarily for hydroelectric power. It lies within the PARANAIBA basin at 18.788°S, 48.146°W.
Key facts
- Current fill level
- 25.4%
- Water stored
- 3 hm³
- Total capacity
- 241 hm³
- Usable capacity
- 13 hm³
- 7-day change
- ▼ 32.7 pts
- Primary use
- Hydroelectric power
- River
- ARAGUARI-MG
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 18.788°S, 48.146°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 25.4% | 3 |
| 4 Sep 2026 | 58.1% | 8 |
| 28 Aug 2026 | 71.0% | 9 |
| 21 Aug 2026 | 66.7% | 9 |
| 14 Aug 2026 | 28.1% | 4 |
| 7 Aug 2026 | 35.2% | 5 |
| 31 Jul 2026 | 42.4% | 6 |
| 24 Jul 2026 | 22.5% | 3 |
| 17 Jul 2026 | 32.4% | 4 |
| 10 Jul 2026 | 45.2% | 6 |
| 3 Jul 2026 | 56.6% | 7 |
| 26 Jun 2026 | 59.5% | 8 |