C.BRANCO-1
Minas Gerais · PARANAIBA
Useful capacity
12.86 hm³
Coordinates
18.788°S, 48.146°W
Operator
ONS
58.1% of useful capacity
Current fill
58.1%of useful capacity
vs 7 days ago
+10.0 ppgaining
vs 1 year ago
+34.1 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
151%of normal
58.1% full on 2026-10-26, against an average of 38.5% for October across 2 years of readings (+19.6 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around C.BRANCO-1 had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +0.66). Rain, not storage. Brazil drought figures →
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°S, 48.146°W · Open in Google Maps
About C.BRANCO-1
As of October 26, 2026, C.BRANCO-1 is at 58.1% of useful capacity, holding 7.5 hm³ of 12.86 hm³. Of the 241.13 hm³ total capacity, that is 3.1%. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has risen by 10.0 percentage points, and it is 34.1 points above its level on the same date a year earlier.
Across the readings we hold for C.BRANCO-1 — 65 data points between October 26, 2025 and October 26, 2026 — the level has ranged from a low of 9.8% (April 3, 2026) to a high of 81.1% (October 2, 2026). On average the reservoir is fullest around October 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
- 58.1% of useful capacity
- Water stored
- 7.5 hm³
- Total capacity
- 241.13 hm³
- Usable capacity
- 12.86 hm³
- 7-day change
- ▲ 10.0 pp
- Year-on-year
- ▲ 34.1 pp
- Primary use
- Hydroelectric power
- River
- ARAGUARI-MG
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 18.788°S, 48.146°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 58.1% | 7.5 |
| 25 Oct 2026 | 58.1% | 7.5 |
| 24 Oct 2026 | 32.4% | 4.2 |
| 23 Oct 2026 | 29.6% | 3.8 |
| 22 Oct 2026 | 49.5% | 6.4 |
| 21 Oct 2026 | 53.8% | 6.9 |
| 20 Oct 2026 | 59.5% | 7.7 |
| 19 Oct 2026 | 48.1% | 6.2 |
| 18 Oct 2026 | 40.9% | 5.3 |
| 17 Oct 2026 | 43.8% | 5.6 |
| 16 Oct 2026 | 52.3% | 6.7 |
| 15 Oct 2026 | 76.8% | 9.9 |