S.DO FACÃO
Goiás · PARANAIBA
Capacity
5,199 hm³
Coordinates
-18.046°N, 47.676°W
Operator
ONS
53.2% full
Current fill
53.2%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 5,199 hm³ |
| Usable capacity | 3,474.2 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | SAO MARCOS |
| Province | Goiás |
| River basin | PARANAIBA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -18.046, -47.676 · Open in Google Maps
About S.DO FACÃO
As of September 9, 2026, S.DO FACÃO is filled to 53.2% of its total capacity, holding roughly 1,847 hm³ of water out of a maximum 5,199 hm³. At this level the reservoir is within its normal operating range. Of that total, about 3,474 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+-0.0 pts).
Across the readings we hold for S.DO FACÃO — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 47.4% (January 16, 2026) to a high of 61.8% (April 17, 2026). On average the reservoir is fullest around April and at its lowest around January.
It is operated by ONS primarily for hydroelectric power. It lies within the PARANAIBA basin at 18.046°S, 47.676°W.
Key facts
- Current fill level
- 53.2%
- Water stored
- 1,847 hm³
- Total capacity
- 5,199 hm³
- Usable capacity
- 3,474 hm³
- 7-day change
- No change
- Primary use
- Hydroelectric power
- River
- SAO MARCOS
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 18.046°S, 47.676°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 53.2% | 1,847 |
| 4 Sep 2026 | 53.2% | 1,849 |
| 28 Aug 2026 | 53.5% | 1,860 |
| 21 Aug 2026 | 54.2% | 1,884 |
| 14 Aug 2026 | 55.0% | 1,911 |
| 7 Aug 2026 | 55.5% | 1,930 |
| 31 Jul 2026 | 56.0% | 1,946 |
| 24 Jul 2026 | 56.2% | 1,952 |
| 17 Jul 2026 | 56.4% | 1,958 |
| 10 Jul 2026 | 56.4% | 1,959 |
| 3 Jul 2026 | 56.5% | 1,963 |
| 26 Jun 2026 | 56.5% | 1,964 |