ITUMBIARA
Minas Gerais · PARANAIBA
Capacity
17,027 hm³
Coordinates
-18.409°N, 49.097°W
Operator
ONS
73.0% full
Current fill
73.0%vs 7 days ago
-1.1%losing
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 17,027 hm³ |
| Usable capacity | 12,454 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | PARANAÍBA |
| Province | Minas Gerais |
| River basin | PARANAIBA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -18.409, -49.097 · Open in Google Maps
About ITUMBIARA
As of September 9, 2026, ITUMBIARA is filled to 73.0% of its total capacity, holding roughly 9,086 hm³ of water out of a maximum 17,027 hm³. At this level the reservoir is within its normal operating range. Of that total, about 12,454 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-1.1 pts).
Across the readings we hold for ITUMBIARA — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 32.1% (January 2, 2026) to a high of 85.5% (June 5, 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 18.409°S, 49.097°W.
Key facts
- Current fill level
- 73.0%
- Water stored
- 9,086 hm³
- Total capacity
- 17,027 hm³
- Usable capacity
- 12,454 hm³
- 7-day change
- ▼ 1.1 pts
- Primary use
- Hydroelectric power
- River
- PARANAÍBA
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 18.409°S, 49.097°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 73.0% | 9,086 |
| 4 Sep 2026 | 74.0% | 9,217 |
| 28 Aug 2026 | 76.0% | 9,468 |
| 21 Aug 2026 | 76.7% | 9,554 |
| 14 Aug 2026 | 77.4% | 9,636 |
| 7 Aug 2026 | 78.8% | 9,820 |
| 31 Jul 2026 | 79.9% | 9,950 |
| 24 Jul 2026 | 80.7% | 10,053 |
| 17 Jul 2026 | 81.1% | 10,103 |
| 10 Jul 2026 | 81.3% | 10,128 |
| 3 Jul 2026 | 81.4% | 10,134 |
| 26 Jun 2026 | 80.8% | 10,067 |