G. B. MUNHOZ
Paraná · IGUACU
Capacity
5,779 hm³
Coordinates
-26.009°N, 51.665°W
Operator
ONS
93.2% full
Current fill
93.2%vs 7 days ago
+0.2%gaining
vs 1 year ago
+9.5%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 5,779 hm³ |
| Usable capacity | 3,804.69 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | IGUAÇU |
| Province | Paraná |
| River basin | IGUACU |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -26.009, -51.665 · Open in Google Maps
About G. B. MUNHOZ
As of July 28, 2026, G. B. MUNHOZ is filled to 93.2% of its total capacity, holding roughly 3,546 hm³ of water out of a maximum 5,779 hm³. At this level the reservoir is high. Of that total, about 3,805 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.2 pts), and it is 9.5 points above its level on the same date a year earlier.
Across the readings we hold for G. B. MUNHOZ — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 18.7% (April 24, 2026) to a high of 99.6% (October 3, 2025). On average the reservoir is fullest around September and at its lowest around April.
It is operated by ONS primarily for hydroelectric power. It lies within the IGUACU basin at 26.009°S, 51.665°W.
Key facts
- Current fill level
- 93.2%
- Water stored
- 3,546 hm³
- Total capacity
- 5,779 hm³
- Usable capacity
- 3,805 hm³
- 7-day change
- ▲ 0.2 pts
- Year-on-year
- ▲ 9.5 pts
- Primary use
- Hydroelectric power
- River
- IGUAÇU
- River basin
- IGUACU
- Operator
- ONS
- Coordinates
- 26.009°S, 51.665°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 93.2% | 3,546 |
| 24 Jul 2026 | 93.0% | 3,540 |
| 17 Jul 2026 | 96.7% | 3,678 |
| 10 Jul 2026 | 94.2% | 3,583 |
| 3 Jul 2026 | 84.8% | 3,225 |
| 26 Jun 2026 | 62.3% | 2,371 |
| 19 Jun 2026 | 62.3% | 2,371 |
| 12 Jun 2026 | 66.4% | 2,528 |
| 5 Jun 2026 | 76.5% | 2,910 |
| 29 May 2026 | 74.8% | 2,846 |
| 22 May 2026 | 63.9% | 2,430 |
| 15 May 2026 | 52.1% | 1,982 |
Frequently asked questions
What is the current water level of G. B. MUNHOZ?
As of July 28, 2026, G. B. MUNHOZ is at 93.2% of its capacity, holding approximately 3,546 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is G. B. MUNHOZ reservoir full?
No. As of July 28, 2026, G. B. MUNHOZ is high at 93.2% of its capacity, so it is not full.
Is the water level at G. B. MUNHOZ rising or falling?
The level at G. B. MUNHOZ has been broadly stable over the latest week on record (+0.2 points).
How much water can G. B. MUNHOZ hold?
G. B. MUNHOZ has a total capacity of 5,779 hm³, of which about 3,805 hm³ is usable storage.
Where is G. B. MUNHOZ reservoir located?
G. B. MUNHOZ is located in Paraná, Brazil, within the IGUACU basin (coordinates 26.009°S, 51.665°W).
What is G. B. MUNHOZ used for?
G. B. MUNHOZ is used primarily for hydroelectric power, and is managed by ONS.