PASSO FUNDO
Rio Grande do Sul · URUGUAI
Capacity
1,589 hm³
Coordinates
-27.554°N, 52.741°W
Operator
ONS
77.2% full
Current fill
77.2%vs 7 days ago
+0.3%gaining
vs 1 year ago
-16.7%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 1,589 hm³ |
| Usable capacity | 1,404.61 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | PASSO FUNDO |
| Province | Rio Grande do Sul |
| River basin | URUGUAI |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -27.554, -52.741 · Open in Google Maps
About PASSO FUNDO
As of July 28, 2026, PASSO FUNDO is filled to 77.2% of its total capacity, holding roughly 1,084 hm³ of water out of a maximum 1,589 hm³. At this level the reservoir is within its normal operating range. Of that total, about 1,405 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.3 pts), and it is 16.7 points below its level on the same date a year earlier.
Across the readings we hold for PASSO FUNDO — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 49.8% (June 26, 2026) to a high of 96.2% (November 14, 2025). On average the reservoir is fullest around November and at its lowest around June.
It is operated by ONS primarily for hydroelectric power. It lies within the URUGUAI basin at 27.554°S, 52.741°W.
Key facts
- Current fill level
- 77.2%
- Water stored
- 1,084 hm³
- Total capacity
- 1,589 hm³
- Usable capacity
- 1,405 hm³
- 7-day change
- ▲ 0.3 pts
- Year-on-year
- ▼ 16.7 pts
- Primary use
- Hydroelectric power
- River
- PASSO FUNDO
- River basin
- URUGUAI
- Operator
- ONS
- Coordinates
- 27.554°S, 52.741°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 77.2% | 1,084 |
| 24 Jul 2026 | 76.9% | 1,080 |
| 17 Jul 2026 | 71.7% | 1,007 |
| 10 Jul 2026 | 67.8% | 953 |
| 3 Jul 2026 | 60.5% | 851 |
| 26 Jun 2026 | 49.8% | 700 |
| 19 Jun 2026 | 50.9% | 715 |
| 12 Jun 2026 | 53.2% | 747 |
| 5 Jun 2026 | 55.6% | 781 |
| 29 May 2026 | 55.7% | 782 |
| 22 May 2026 | 55.2% | 775 |
| 15 May 2026 | 55.3% | 776 |
Frequently asked questions
What is the current water level of PASSO FUNDO?
As of July 28, 2026, PASSO FUNDO is at 77.2% of its capacity, holding approximately 1,084 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is PASSO FUNDO reservoir full?
No. As of July 28, 2026, PASSO FUNDO is within its normal operating range at 77.2% of its capacity, so it is not full.
Is the water level at PASSO FUNDO rising or falling?
The level at PASSO FUNDO has been broadly stable over the latest week on record (+0.3 points).
How much water can PASSO FUNDO hold?
PASSO FUNDO has a total capacity of 1,589 hm³, of which about 1,405 hm³ is usable storage.
Where is PASSO FUNDO reservoir located?
PASSO FUNDO is located in Rio Grande do Sul, Brazil, within the URUGUAI basin (coordinates 27.554°S, 52.741°W).
What is PASSO FUNDO used for?
PASSO FUNDO is used primarily for hydroelectric power, and is managed by ONS.