PASSO REAL
Rio Grande do Sul · JACUI
Capacity
3,646 hm³
Coordinates
-29.015°N, 53.187°W
Operator
ONS
66.9% full
Current fill
66.9%vs 7 days ago
-0.9%losing
vs 1 year ago
0.0%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 3,646 hm³ |
| Usable capacity | 3,356.8 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. -29.015, -53.187 · Open in Google Maps
About PASSO REAL
As of July 28, 2026, PASSO REAL is filled to 66.9% of its total capacity, holding roughly 2,244 hm³ of water out of a maximum 3,646 hm³. At this level the reservoir is within its normal operating range. Of that total, about 3,357 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.9 pts), and it sits close to where it was a year earlier.
Across the readings we hold for PASSO REAL — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 49.8% (April 3, 2026) to a high of 76.6% (January 23, 2026). On average the reservoir is fullest around January and at its lowest around April.
It is operated by ONS primarily for hydroelectric power. It lies within the JACUI basin at 29.015°S, 53.187°W.
Key facts
- Current fill level
- 66.9%
- Water stored
- 2,244 hm³
- Total capacity
- 3,646 hm³
- Usable capacity
- 3,357 hm³
- 7-day change
- ▼ 0.9 pts
- Year-on-year
- No change
- Primary use
- Hydroelectric power
- River
- JACUÍ
- River basin
- JACUI
- Operator
- ONS
- Coordinates
- 29.015°S, 53.187°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 66.8% | 2,244 |
| 24 Jul 2026 | 67.7% | 2,273 |
| 17 Jul 2026 | 64.4% | 2,161 |
| 10 Jul 2026 | 66.3% | 2,226 |
| 3 Jul 2026 | 64.2% | 2,154 |
| 26 Jun 2026 | 59.1% | 1,983 |
| 19 Jun 2026 | 59.2% | 1,988 |
| 12 Jun 2026 | 60.8% | 2,042 |
| 5 Jun 2026 | 61.2% | 2,055 |
| 29 May 2026 | 61.0% | 2,047 |
| 22 May 2026 | 60.7% | 2,037 |
| 15 May 2026 | 60.2% | 2,020 |
Frequently asked questions
What is the current water level of PASSO REAL?
As of July 28, 2026, PASSO REAL is at 66.9% of its capacity, holding approximately 2,244 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is PASSO REAL reservoir full?
No. As of July 28, 2026, PASSO REAL is within its normal operating range at 66.9% of its capacity, so it is not full.
Is the water level at PASSO REAL rising or falling?
The level at PASSO REAL has been broadly stable over the latest week on record (-0.9 points).
How much water can PASSO REAL hold?
PASSO REAL has a total capacity of 3,646 hm³, of which about 3,357 hm³ is usable storage.
Where is PASSO REAL reservoir located?
PASSO REAL is located in Rio Grande do Sul, Brazil, within the JACUI basin (coordinates 29.015°S, 53.187°W).
What is PASSO REAL used for?
PASSO REAL is used primarily for hydroelectric power, and is managed by ONS.