CHAVANTES
São Paulo · PARANAPANEMA
Capacity
8,795 hm³
Coordinates
-23.131°N, 49.733°W
Operator
ONS
56.2% full
Current fill
56.2%vs 7 days ago
+1.5%gaining
vs 1 year ago
-1.8%year-over-year
7-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 July 28, 2026, CHAVANTES is filled to 56.2% of its total capacity, holding roughly 1,709 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 (+1.5 pts), and it is 1.8 points below its level on the same date a year earlier.
Across the readings we hold for CHAVANTES — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 36.9% (March 6, 2026) to a high of 58.0% (August 15, 2025). 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
- 56.2%
- Water stored
- 1,709 hm³
- Total capacity
- 8,795 hm³
- Usable capacity
- 3,041 hm³
- 7-day change
- ▲ 1.5 pts
- Year-on-year
- ▼ 1.8 pts
- Primary use
- Hydroelectric power
- River
- PARANAPANEMA
- River basin
- PARANAPANEMA
- Operator
- ONS
- Coordinates
- 23.131°S, 49.733°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 56.2% | 1,709 |
| 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 |
| 19 Jun 2026 | 51.4% | 1,564 |
| 12 Jun 2026 | 50.0% | 1,522 |
| 5 Jun 2026 | 49.2% | 1,497 |
| 29 May 2026 | 49.1% | 1,494 |
| 22 May 2026 | 48.7% | 1,480 |
| 15 May 2026 | 46.0% | 1,400 |
Frequently asked questions
What is the current water level of CHAVANTES?
As of July 28, 2026, CHAVANTES is at 56.2% of its capacity, holding approximately 1,709 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is CHAVANTES reservoir full?
No. As of July 28, 2026, CHAVANTES is within its normal operating range at 56.2% of its capacity, so it is not full.
Is the water level at CHAVANTES rising or falling?
The level at CHAVANTES has been broadly stable over the latest week on record (+1.5 points).
How much water can CHAVANTES hold?
CHAVANTES has a total capacity of 8,795 hm³, of which about 3,041 hm³ is usable storage.
Where is CHAVANTES reservoir located?
CHAVANTES is located in São Paulo, Brazil, within the PARANAPANEMA basin (coordinates 23.131°S, 49.733°W).
What is CHAVANTES used for?
CHAVANTES is used primarily for hydroelectric power, and is managed by ONS.