PARAIBUNA
São Paulo · PARAIBA DO SUL
Capacity
4,732 hm³
Coordinates
-23.410°N, 45.601°W
Operator
ONS
46.7% full
Current fill
46.7%vs 7 days ago
-0.9%losing
vs 1 year ago
-21.1%year-over-year
7-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 July 28, 2026, PARAIBUNA is filled to 46.7% of its total capacity, holding roughly 1,231 hm³ of water out of a maximum 4,732 hm³. At this level the reservoir is within its normal operating range. 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 (-0.9 pts), and it is 21.1 points below its level on the same date a year earlier.
Across the readings we hold for PARAIBUNA — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 33.9% (January 16, 2026) to a high of 67.9% (August 15, 2025). On average the reservoir is fullest around August 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
- 46.7%
- Water stored
- 1,231 hm³
- Total capacity
- 4,732 hm³
- Usable capacity
- 2,636 hm³
- 7-day change
- ▼ 0.9 pts
- Year-on-year
- ▼ 21.1 pts
- Primary use
- Hydroelectric power
- River
- PARAÍBA SUL
- River basin
- PARAIBA DO SUL
- Operator
- ONS
- Coordinates
- 23.410°S, 45.601°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 46.7% | 1,231 |
| 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 |
| 19 Jun 2026 | 54.0% | 1,423 |
| 12 Jun 2026 | 55.2% | 1,455 |
| 5 Jun 2026 | 56.6% | 1,493 |
| 29 May 2026 | 57.9% | 1,526 |
| 22 May 2026 | 58.6% | 1,545 |
| 15 May 2026 | 58.1% | 1,532 |
Frequently asked questions
What is the current water level of PARAIBUNA?
As of July 28, 2026, PARAIBUNA is at 46.7% of its capacity, holding approximately 1,231 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is PARAIBUNA reservoir full?
No. As of July 28, 2026, PARAIBUNA is within its normal operating range at 46.7% of its capacity, so it is not full.
Is the water level at PARAIBUNA rising or falling?
The level at PARAIBUNA has been broadly stable over the latest week on record (-0.9 points).
How much water can PARAIBUNA hold?
PARAIBUNA has a total capacity of 4,732 hm³, of which about 2,636 hm³ is usable storage.
Where is PARAIBUNA reservoir located?
PARAIBUNA is located in São Paulo, Brazil, within the PARAIBA DO SUL basin (coordinates 23.410°S, 45.601°W).
What is PARAIBUNA used for?
PARAIBUNA is used primarily for hydroelectric power, and is managed by ONS.