SAO SALVADOR
Tocantins · TOCANTINS
Capacity
952 hm³
Coordinates
-12.835°N, 48.225°W
Operator
ONS
93.8% full
Current fill
93.8%vs 7 days ago
+34.6%gaining
vs 1 year ago
N/A7-day trend
↑rising
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 952 hm³ |
| Usable capacity | 59.14 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | TOCANTINS |
| Province | Tocantins |
| River basin | TOCANTINS |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -12.835, -48.225 · Open in Google Maps
About SAO SALVADOR
As of September 9, 2026, SAO SALVADOR is filled to 93.8% of its total capacity, holding roughly 56 hm³ of water out of a maximum 952 hm³. At this level the reservoir is high. Of that total, about 59 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 34.6 percentage points.
Across the readings we hold for SAO SALVADOR — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 13.6% (August 28, 2026) to a high of 93.8% (September 9, 2026). On average the reservoir is fullest around September and at its lowest around August.
It is operated by ONS primarily for hydroelectric power. It lies within the TOCANTINS basin at 12.835°S, 48.225°W.
Key facts
- Current fill level
- 93.8%
- Water stored
- 56 hm³
- Total capacity
- 952 hm³
- Usable capacity
- 59 hm³
- 7-day change
- ▲ 34.6 pts
- Primary use
- Hydroelectric power
- River
- TOCANTINS
- River basin
- TOCANTINS
- Operator
- ONS
- Coordinates
- 12.835°S, 48.225°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 93.8% | 56 |
| 4 Sep 2026 | 59.3% | 35 |
| 28 Aug 2026 | 13.6% | 8 |
| 21 Aug 2026 | 27.4% | 16 |
| 14 Aug 2026 | 19.5% | 12 |
| 7 Aug 2026 | 49.2% | 29 |
| 31 Jul 2026 | 47.2% | 28 |
| 24 Jul 2026 | 33.3% | 20 |
| 17 Jul 2026 | 51.2% | 30 |
| 10 Jul 2026 | 53.2% | 32 |
| 3 Jul 2026 | 33.3% | 20 |
| 26 Jun 2026 | 61.3% | 36 |