SALTO OSORIO
Paraná · IGUACU
Useful capacity
402.67 hm³
Coordinates
25.537°S, 53.008°W
Operator
ONS
91.2% of useful capacity
Current fill
91.2%of useful capacity
vs 7 days ago
-0.1 pplosing
vs 1 year ago
-1.6 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
98%of normal
91.2% full on 2026-10-26, against an average of 92.8% for October across 2 years of readings (-1.6 points).
Rain over the last three months · 11 October 2026
Very wet
In the three months to 11 October 2026 the area around SALTO OSORIO had much more rain than normal, seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +1.75). Rain, not storage. Brazil drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 1,124 hm³ |
| Usable capacity | 402.67 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. 25.537°S, 53.008°W · Open in Google Maps
About SALTO OSORIO
As of October 26, 2026, SALTO OSORIO is at 91.2% of useful capacity, holding 367.2 hm³ of 402.67 hm³. Of the 1,124 hm³ total capacity, that is 32.7%. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.1 pp), and it is 1.6 points below its level on the same date a year earlier.
Across the readings we hold for SALTO OSORIO — 65 data points between October 26, 2025 and October 26, 2026 — the level has ranged from a low of 88.3% (January 30, 2026) to a high of 98.6% (June 26, 2026). On average the reservoir is fullest around July and at its lowest around February.
It is operated by ONS primarily for hydroelectric power. It lies within the IGUACU basin at 25.537°S, 53.008°W.
Key facts
- Current fill level
- 91.2% of useful capacity
- Water stored
- 367.2 hm³
- Total capacity
- 1,124 hm³
- Usable capacity
- 402.67 hm³
- 7-day change
- ▼ 0.1 pp
- Year-on-year
- ▼ 1.6 pp
- Primary use
- Hydroelectric power
- River
- IGUAÇU
- River basin
- IGUACU
- Operator
- ONS
- Coordinates
- 25.537°S, 53.008°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 91.2% | 367.2 |
| 25 Oct 2026 | 92.4% | 372.1 |
| 24 Oct 2026 | 96.7% | 389.3 |
| 23 Oct 2026 | 91.9% | 369.9 |
| 22 Oct 2026 | 92.0% | 370.5 |
| 21 Oct 2026 | 93.5% | 376.5 |
| 20 Oct 2026 | 90.0% | 362.2 |
| 19 Oct 2026 | 91.3% | 367.7 |
| 18 Oct 2026 | 90.9% | 366 |
| 17 Oct 2026 | 91.7% | 369.4 |
| 16 Oct 2026 | 92.8% | 373.8 |
| 15 Oct 2026 | 95.8% | 386 |