ITAIPU
Paraná · PARANA
Capacity
29,403.91 hm³
Coordinates
-25.405°N, 54.588°W
Operator
ONS
Current fill
91.6%vs 7 days ago
-2.2%losing
vs 1 year ago
-1.6%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 29,403.91 hm³ |
| Usable capacity | 19,000 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | PARANÁ |
| Province | Paraná |
| River basin | PARANA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -25.405, -54.588 · Open in Google Maps
About ITAIPU
As of June 10, 2026, ITAIPU is filled to 91.6% of its total capacity, holding roughly 17,406 hm³ of water out of a maximum 29,404 hm³. At this level the reservoir is high. Of that total, about 19,000 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 2.2 percentage points, and it is 1.6 points below its level on the same date a year earlier.
Across the readings we hold for ITAIPU — 52 data points between June 27, 2025 and June 10, 2026 — the level has ranged from a low of 76.6% (February 13, 2026) to a high of 98.9% (November 14, 2025). On average the reservoir is fullest around November and at its lowest around February.
It is operated by ONS primarily for hydroelectric power. It lies within the PARANA basin at 25.405°S, 54.588°W.
Key facts
- Current fill level
- 91.6%
- Water stored
- 17,406 hm³
- Total capacity
- 29,404 hm³
- Usable capacity
- 19,000 hm³
- 7-day change
- ▼ 2.2 pts
- Year-on-year
- ▼ 1.6 pts
- Primary use
- Hydroelectric power
- River
- PARANÁ
- River basin
- PARANA
- Operator
- ONS
- Coordinates
- 25.405°S, 54.588°W
- Last updated
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 91.6% | 17,406 |
| 5 Jun 2026 | 93.8% | 17,824 |
| 29 May 2026 | 94.7% | 17,991 |
| 22 May 2026 | 95.4% | 18,134 |
| 15 May 2026 | 93.7% | 17,811 |
| 8 May 2026 | 90.5% | 17,193 |
| 1 May 2026 | 88.8% | 16,882 |
| 24 Apr 2026 | 87.0% | 16,526 |
| 17 Apr 2026 | 83.4% | 15,840 |
| 10 Apr 2026 | 83.7% | 15,901 |
| 3 Apr 2026 | 86.0% | 16,344 |
| 27 Mar 2026 | 88.3% | 16,771 |
Frequently asked questions
What is the current water level of ITAIPU?
As of June 10, 2026, ITAIPU is at 91.6% of its capacity, holding approximately 17,406 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is ITAIPU reservoir full?
No. As of June 10, 2026, ITAIPU is high at 91.6% of its capacity, so it is not full.
Is the water level at ITAIPU rising or falling?
The level at ITAIPU is falling — it dropped 2.2 percentage points over the latest week on record.
How much water can ITAIPU hold?
ITAIPU has a total capacity of 29,404 hm³, of which about 19,000 hm³ is usable storage.
Where is ITAIPU reservoir located?
ITAIPU is located in Paraná, Brazil, within the PARANA basin (coordinates 25.405°S, 54.588°W).
What is ITAIPU used for?
ITAIPU is used primarily for hydroelectric power, and is managed by ONS.