PARAIBUNA
São Paulo · PARAIBA DO SUL
Capacity
4,732 hm³
Coordinates
-23.410°N, 45.601°W
Operator
ONS
36.2% full
Current fill
36.2%vs 7 days ago
-0.6%losing
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 4,732 hm³ |
| Usable capacity | 2,636.15 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | PARAÍBA SUL |
| Province | São Paulo |
| River basin | PARAIBA DO SUL |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -23.410, -45.601 · Open in Google Maps
About PARAIBUNA
As of September 9, 2026, PARAIBUNA is filled to 36.2% of its total capacity, holding roughly 954 hm³ of water out of a maximum 4,732 hm³. At this level the reservoir is low. Of that total, about 2,636 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts).
Across the readings we hold for PARAIBUNA — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 33.9% (January 16, 2026) to a high of 58.6% (May 22, 2026). On average the reservoir is fullest around May and at its lowest around January.
It is operated by ONS primarily for hydroelectric power. It lies within the PARAIBA DO SUL basin at 23.410°S, 45.601°W.
Key facts
- Current fill level
- 36.2%
- Water stored
- 954 hm³
- Total capacity
- 4,732 hm³
- Usable capacity
- 2,636 hm³
- 7-day change
- ▼ 0.6 pts
- Primary use
- Hydroelectric power
- River
- PARAÍBA SUL
- River basin
- PARAIBA DO SUL
- Operator
- ONS
- Coordinates
- 23.410°S, 45.601°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 36.2% | 954 |
| 4 Sep 2026 | 36.8% | 970 |
| 28 Aug 2026 | 38.0% | 1,002 |
| 21 Aug 2026 | 40.2% | 1,059 |
| 14 Aug 2026 | 42.0% | 1,107 |
| 7 Aug 2026 | 44.1% | 1,162 |
| 31 Jul 2026 | 46.0% | 1,213 |
| 24 Jul 2026 | 47.6% | 1,255 |
| 17 Jul 2026 | 49.1% | 1,295 |
| 10 Jul 2026 | 50.6% | 1,335 |
| 3 Jul 2026 | 52.0% | 1,372 |
| 26 Jun 2026 | 53.3% | 1,405 |