C.BRANCO-1
Minas Gerais · PARANAIBA
Capacity
241.13 hm³
Coordinates
-18.788°N, 48.146°W
Operator
ONS
Current fill
11.2%vs 7 days ago
0.0%stable
vs 1 year ago
-22.6%year-over-year
7-day trend
→stable
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 June 10, 2026, C.BRANCO-1 is filled to 11.2% of its total capacity, holding roughly 1 hm³ of water out of a maximum 241 hm³. At this level the reservoir is critically low. Of that total, about 13 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 22.6 points below its level on the same date a year earlier.
Across the readings we hold for C.BRANCO-1 — 52 data points between June 27, 2025 and June 10, 2026 — the level has ranged from a low of 0.0% (August 22, 2025) to a high of 76.8% (November 14, 2025). On average the reservoir is fullest around November and at its lowest around June.
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
- 11.2%
- Water stored
- 1 hm³
- Total capacity
- 241 hm³
- Usable capacity
- 13 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 22.6 pts
- Primary use
- Hydroelectric power
- River
- ARAGUARI-MG
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 18.788°S, 48.146°W
- Last updated
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 11.2% | 1 |
| 5 Jun 2026 | 11.2% | 1 |
| 29 May 2026 | 45.2% | 6 |
| 22 May 2026 | 48.1% | 6 |
| 15 May 2026 | 38.1% | 5 |
| 8 May 2026 | 49.5% | 6 |
| 1 May 2026 | 11.2% | 1 |
| 24 Apr 2026 | 28.1% | 4 |
| 17 Apr 2026 | 28.1% | 4 |
| 10 Apr 2026 | 23.9% | 3 |
| 3 Apr 2026 | 9.8% | 1 |
| 27 Mar 2026 | 18.3% | 2 |
Frequently asked questions
What is the current water level of C.BRANCO-1?
As of June 10, 2026, C.BRANCO-1 is at 11.2% of its capacity, holding approximately 1 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is C.BRANCO-1 reservoir full?
No. As of June 10, 2026, C.BRANCO-1 is critically low at 11.2% of its capacity, so it is not full.
Is the water level at C.BRANCO-1 rising or falling?
The level at C.BRANCO-1 has been broadly stable over the latest week on record (0.0 points).
How much water can C.BRANCO-1 hold?
C.BRANCO-1 has a total capacity of 241 hm³, of which about 13 hm³ is usable storage.
Where is C.BRANCO-1 reservoir located?
C.BRANCO-1 is located in Minas Gerais, Brazil, within the PARANAIBA basin (coordinates 18.788°S, 48.146°W).
What is C.BRANCO-1 used for?
C.BRANCO-1 is used primarily for hydroelectric power, and is managed by ONS.