ITAUBA
Rio Grande do Sul · JACUI
Capacity
620 hm³
Coordinates
-29.259°N, 53.236°W
Operator
ONS
84.2% full
Current fill
84.2%vs 7 days ago
+10.4%gaining
vs 1 year ago
+31.5%year-over-year
7-day trend
↑rising
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 July 28, 2026, ITAUBA is filled to 84.2% of its total capacity, holding roughly 133 hm³ of water out of a maximum 620 hm³. At this level the reservoir is high. Of that total, about 158 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 10.4 percentage points, and it is 31.5 points above its level on the same date a year earlier.
Across the readings we hold for ITAUBA — 52 data points between August 15, 2025 and July 28, 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
- 84.2%
- Water stored
- 133 hm³
- Total capacity
- 620 hm³
- Usable capacity
- 158 hm³
- 7-day change
- ▲ 10.4 pts
- Year-on-year
- ▲ 31.5 pts
- Primary use
- Hydroelectric power
- River
- JACUÍ
- River basin
- JACUI
- Operator
- ONS
- Coordinates
- 29.259°S, 53.236°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 84.2% | 133 |
| 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 |
| 19 Jun 2026 | 72.0% | 114 |
| 12 Jun 2026 | 56.8% | 90 |
| 5 Jun 2026 | 55.5% | 88 |
| 29 May 2026 | 57.9% | 92 |
| 22 May 2026 | 58.4% | 93 |
| 15 May 2026 | 55.2% | 87 |
Frequently asked questions
What is the current water level of ITAUBA?
As of July 28, 2026, ITAUBA is at 84.2% of its capacity, holding approximately 133 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is ITAUBA reservoir full?
No. As of July 28, 2026, ITAUBA is high at 84.2% of its capacity, so it is not full.
Is the water level at ITAUBA rising or falling?
The level at ITAUBA is rising — it gained 10.4 percentage points over the latest week on record.
How much water can ITAUBA hold?
ITAUBA has a total capacity of 620 hm³, of which about 158 hm³ is usable storage.
Where is ITAUBA reservoir located?
ITAUBA is located in Rio Grande do Sul, Brazil, within the JACUI basin (coordinates 29.259°S, 53.236°W).
What is ITAUBA used for?
ITAUBA is used primarily for hydroelectric power, and is managed by ONS.