SALTO SANTIAGO
Paraná · IGUACU
Capacity
6,775 hm³
Coordinates
-25.628°N, 52.608°W
Operator
ONS
66.3% full
Current fill
66.3%vs 7 days ago
+0.4%gaining
vs 1 year ago
-12.0%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 6,775 hm³ |
| Usable capacity | 4,112.92 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. -25.628, -52.608 · Open in Google Maps
About SALTO SANTIAGO
As of July 28, 2026, SALTO SANTIAGO is filled to 66.3% of its total capacity, holding roughly 2,725 hm³ of water out of a maximum 6,775 hm³. At this level the reservoir is within its normal operating range. Of that total, about 4,113 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.4 pts), and it is 12.0 points below its level on the same date a year earlier.
Across the readings we hold for SALTO SANTIAGO — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 23.7% (April 24, 2026) to a high of 99.1% (November 14, 2025). On average the reservoir is fullest around November and at its lowest around April.
It is operated by ONS primarily for hydroelectric power. It lies within the IGUACU basin at 25.628°S, 52.608°W.
Key facts
- Current fill level
- 66.3%
- Water stored
- 2,725 hm³
- Total capacity
- 6,775 hm³
- Usable capacity
- 4,113 hm³
- 7-day change
- ▲ 0.4 pts
- Year-on-year
- ▼ 12.0 pts
- Primary use
- Hydroelectric power
- River
- IGUAÇU
- River basin
- IGUACU
- Operator
- ONS
- Coordinates
- 25.628°S, 52.608°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 66.3% | 2,725 |
| 24 Jul 2026 | 65.9% | 2,710 |
| 17 Jul 2026 | 66.4% | 2,732 |
| 10 Jul 2026 | 69.6% | 2,863 |
| 3 Jul 2026 | 74.5% | 3,063 |
| 26 Jun 2026 | 78.5% | 3,229 |
| 19 Jun 2026 | 77.7% | 3,195 |
| 12 Jun 2026 | 70.8% | 2,911 |
| 5 Jun 2026 | 61.8% | 2,542 |
| 29 May 2026 | 54.4% | 2,239 |
| 22 May 2026 | 48.1% | 1,980 |
| 15 May 2026 | 41.1% | 1,692 |
Frequently asked questions
What is the current water level of SALTO SANTIAGO?
As of July 28, 2026, SALTO SANTIAGO is at 66.3% of its capacity, holding approximately 2,725 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is SALTO SANTIAGO reservoir full?
No. As of July 28, 2026, SALTO SANTIAGO is within its normal operating range at 66.3% of its capacity, so it is not full.
Is the water level at SALTO SANTIAGO rising or falling?
The level at SALTO SANTIAGO has been broadly stable over the latest week on record (+0.4 points).
How much water can SALTO SANTIAGO hold?
SALTO SANTIAGO has a total capacity of 6,775 hm³, of which about 4,113 hm³ is usable storage.
Where is SALTO SANTIAGO reservoir located?
SALTO SANTIAGO is located in Paraná, Brazil, within the IGUACU basin (coordinates 25.628°S, 52.608°W).
What is SALTO SANTIAGO used for?
SALTO SANTIAGO is used primarily for hydroelectric power, and is managed by ONS.