ITÁ
Rio Grande do Sul · URUGUAI
Capacity
5,100 hm³
Coordinates
-27.282°N, 52.386°W
Operator
ONS
63.7% full
Current fill
63.7%vs 7 days ago
-17.1%losing
vs 1 year ago
-23.3%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 5,100 hm³ |
| Usable capacity | 797.85 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | URUGUAI |
| Province | Rio Grande do Sul |
| River basin | URUGUAI |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -27.282, -52.386 · Open in Google Maps
About ITÁ
As of July 28, 2026, ITÁ is filled to 63.7% of its total capacity, holding roughly 508 hm³ of water out of a maximum 5,100 hm³. At this level the reservoir is within its normal operating range. Of that total, about 798 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 17.1 percentage points, and it is 23.3 points below its level on the same date a year earlier.
Across the readings we hold for ITÁ — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 50.4% (June 12, 2026) to a high of 99.5% (September 12, 2025). On average the reservoir is fullest around September and at its lowest around February.
It is operated by ONS primarily for hydroelectric power. It lies within the URUGUAI basin at 27.282°S, 52.386°W.
Key facts
- Current fill level
- 63.7%
- Water stored
- 508 hm³
- Total capacity
- 5,100 hm³
- Usable capacity
- 798 hm³
- 7-day change
- ▼ 17.1 pts
- Year-on-year
- ▼ 23.3 pts
- Primary use
- Hydroelectric power
- River
- URUGUAI
- River basin
- URUGUAI
- Operator
- ONS
- Coordinates
- 27.282°S, 52.386°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 63.6% | 508 |
| 24 Jul 2026 | 80.8% | 645 |
| 17 Jul 2026 | 83.9% | 670 |
| 10 Jul 2026 | 78.7% | 628 |
| 3 Jul 2026 | 80.1% | 639 |
| 26 Jun 2026 | 62.3% | 497 |
| 19 Jun 2026 | 59.9% | 478 |
| 12 Jun 2026 | 50.4% | 402 |
| 5 Jun 2026 | 62.3% | 497 |
| 29 May 2026 | 69.8% | 557 |
| 22 May 2026 | 68.0% | 543 |
| 15 May 2026 | 73.7% | 588 |
Frequently asked questions
What is the current water level of ITÁ?
As of July 28, 2026, ITÁ is at 63.7% of its capacity, holding approximately 508 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is ITÁ reservoir full?
No. As of July 28, 2026, ITÁ is within its normal operating range at 63.7% of its capacity, so it is not full.
Is the water level at ITÁ rising or falling?
The level at ITÁ is falling — it dropped 17.1 percentage points over the latest week on record.
How much water can ITÁ hold?
ITÁ has a total capacity of 5,100 hm³, of which about 798 hm³ is usable storage.
Where is ITÁ reservoir located?
ITÁ is located in Rio Grande do Sul, Brazil, within the URUGUAI basin (coordinates 27.282°S, 52.386°W).
What is ITÁ used for?
ITÁ is used primarily for hydroelectric power, and is managed by ONS.