SEGREDO
Paraná · IGUACU
Capacity
2,950 hm³
Coordinates
-25.792°N, 52.116°W
Operator
ONS
68.0% full
Current fill
68.0%vs 7 days ago
-3.2%losing
vs 1 year ago
N/A7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 2,950 hm³ |
| Usable capacity | 383.68 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. -25.792, -52.116 · Open in Google Maps
About SEGREDO
As of September 9, 2026, SEGREDO is filled to 68.0% of its total capacity, holding roughly 261 hm³ of water out of a maximum 2,950 hm³. At this level the reservoir is within its normal operating range. Of that total, about 384 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 3.2 percentage points.
Across the readings we hold for SEGREDO — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 13.2% (March 20, 2026) to a high of 99.0% (October 17, 2025). On average the reservoir is fullest around July and at its lowest around April.
It is operated by ONS primarily for hydroelectric power. It lies within the IGUACU basin at 25.792°S, 52.116°W.
Key facts
- Current fill level
- 68.0%
- Water stored
- 261 hm³
- Total capacity
- 2,950 hm³
- Usable capacity
- 384 hm³
- 7-day change
- ▼ 3.2 pts
- Primary use
- Hydroelectric power
- River
- IGUAÇU
- River basin
- IGUACU
- Operator
- ONS
- Coordinates
- 25.792°S, 52.116°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 68.0% | 261 |
| 4 Sep 2026 | 71.2% | 273 |
| 28 Aug 2026 | 66.3% | 255 |
| 21 Aug 2026 | 80.2% | 308 |
| 14 Aug 2026 | 78.1% | 300 |
| 7 Aug 2026 | 76.9% | 295 |
| 31 Jul 2026 | 90.9% | 349 |
| 24 Jul 2026 | 93.2% | 358 |
| 17 Jul 2026 | 97.5% | 374 |
| 10 Jul 2026 | 95.7% | 367 |
| 3 Jul 2026 | 97.9% | 376 |
| 26 Jun 2026 | 85.1% | 327 |