CHAVANTES
São Paulo · PARANAPANEMA
Capacity
8,795 hm³
Coordinates
-23.131°N, 49.733°W
Operator
ONS
59.0% full
Current fill
59.0%vs 7 days ago
+1.3%gaining
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 8,795 hm³ |
| Usable capacity | 3,041.12 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | PARANAPANEMA |
| Province | São Paulo |
| River basin | PARANAPANEMA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -23.131, -49.733 · Open in Google Maps
About CHAVANTES
As of September 9, 2026, CHAVANTES is filled to 59.0% of its total capacity, holding roughly 1,796 hm³ of water out of a maximum 8,795 hm³. At this level the reservoir is within its normal operating range. Of that total, about 3,041 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+1.3 pts).
Across the readings we hold for CHAVANTES — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 36.9% (March 6, 2026) to a high of 59.0% (September 9, 2026). On average the reservoir is fullest around August and at its lowest around March.
It is operated by ONS primarily for hydroelectric power. It lies within the PARANAPANEMA basin at 23.131°S, 49.733°W.
Key facts
- Current fill level
- 59.0%
- Water stored
- 1,796 hm³
- Total capacity
- 8,795 hm³
- Usable capacity
- 3,041 hm³
- 7-day change
- ▲ 1.3 pts
- Primary use
- Hydroelectric power
- River
- PARANAPANEMA
- River basin
- PARANAPANEMA
- Operator
- ONS
- Coordinates
- 23.131°S, 49.733°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 59.0% | 1,796 |
| 4 Sep 2026 | 57.8% | 1,758 |
| 28 Aug 2026 | 56.3% | 1,713 |
| 21 Aug 2026 | 57.1% | 1,738 |
| 14 Aug 2026 | 57.1% | 1,738 |
| 7 Aug 2026 | 57.4% | 1,745 |
| 31 Jul 2026 | 56.6% | 1,720 |
| 24 Jul 2026 | 54.7% | 1,663 |
| 17 Jul 2026 | 54.0% | 1,642 |
| 10 Jul 2026 | 53.6% | 1,630 |
| 3 Jul 2026 | 53.4% | 1,624 |
| 26 Jun 2026 | 52.8% | 1,606 |