ITAUBA
Rio Grande do Sul · JACUI
Capacity
620 hm³
Coordinates
-29.259°N, 53.236°W
Operator
ONS
59.9% full
Current fill
59.9%vs 7 days ago
-8.0%losing
vs 1 year ago
N/A7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 620 hm³ |
| Usable capacity | 158.2 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | JACUÍ |
| Province | Rio Grande do Sul |
| River basin | JACUI |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -29.259, -53.236 · Open in Google Maps
About ITAUBA
As of September 9, 2026, ITAUBA is filled to 59.9% of its total capacity, holding roughly 95 hm³ of water out of a maximum 620 hm³. At this level the reservoir is within its normal operating range. Of that total, about 158 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 8.0 percentage points.
Across the readings we hold for ITAUBA — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 36.6% (February 6, 2026) to a high of 90.9% (April 10, 2026). On average the reservoir is fullest around September and at its lowest around March.
It is operated by ONS primarily for hydroelectric power. It lies within the JACUI basin at 29.259°S, 53.236°W.
Key facts
- Current fill level
- 59.9%
- Water stored
- 95 hm³
- Total capacity
- 620 hm³
- Usable capacity
- 158 hm³
- 7-day change
- ▼ 8.0 pts
- Primary use
- Hydroelectric power
- River
- JACUÍ
- River basin
- JACUI
- Operator
- ONS
- Coordinates
- 29.259°S, 53.236°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 59.9% | 95 |
| 4 Sep 2026 | 67.9% | 107 |
| 28 Aug 2026 | 56.2% | 89 |
| 21 Aug 2026 | 69.3% | 110 |
| 14 Aug 2026 | 68.0% | 108 |
| 7 Aug 2026 | 58.0% | 92 |
| 31 Jul 2026 | 67.8% | 107 |
| 24 Jul 2026 | 73.8% | 117 |
| 17 Jul 2026 | 55.0% | 87 |
| 10 Jul 2026 | 62.1% | 98 |
| 3 Jul 2026 | 72.8% | 115 |
| 26 Jun 2026 | 66.8% | 106 |