ITUMBIARA
Minas Gerais · PARANAIBA
Useful capacity
12,454 hm³
Coordinates
18.409°S, 49.097°W
Operator
ONS
63.6% of useful capacity
Current fill
63.6%of useful capacity
vs 7 days ago
-0.9 pplosing
vs 1 year ago
+20.5 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
117%of normal
63.6% full on 2026-10-26, against an average of 54.2% for October across 2 years of readings (+9.4 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around ITUMBIARA 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 +0.32). Rain, not storage. Brazil drought figures →
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°S, 49.097°W · Open in Google Maps
About ITUMBIARA
As of October 26, 2026, ITUMBIARA is at 63.6% of useful capacity, holding 7,920 hm³ of 12,454 hm³. Of the 17,027 hm³ total capacity, that is 46.5%. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.9 pp), and it is 20.5 points above its level on the same date a year earlier.
Across the readings we hold for ITUMBIARA — 65 data points between October 26, 2025 and October 26, 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
- 63.6% of useful capacity
- Water stored
- 7,920 hm³
- Total capacity
- 17,027 hm³
- Usable capacity
- 12,454 hm³
- 7-day change
- ▼ 0.9 pp
- Year-on-year
- ▲ 20.5 pp
- Primary use
- Hydroelectric power
- River
- PARANAÍBA
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 18.409°S, 49.097°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 63.6% | 7,920 |
| 25 Oct 2026 | 63.8% | 7,949 |
| 24 Oct 2026 | 64.2% | 7,993 |
| 23 Oct 2026 | 64.5% | 8,029 |
| 22 Oct 2026 | 64.4% | 8,023 |
| 21 Oct 2026 | 64.4% | 8,023 |
| 20 Oct 2026 | 64.5% | 8,029 |
| 19 Oct 2026 | 64.5% | 8,035 |
| 18 Oct 2026 | 64.8% | 8,071 |
| 17 Oct 2026 | 65.3% | 8,134 |
| 16 Oct 2026 | 65.4% | 8,140 |
| 15 Oct 2026 | 65.8% | 8,201 |