BARIRI
São Paulo · TIETE
Capacity
544 hm³
Coordinates
-22.154°N, 48.754°W
Operator
ONS
97.9% full
Current fill
97.9%vs 7 days ago
+3.1%gaining
vs 1 year ago
N/A7-day trend
↑rising
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 544 hm³ |
| Usable capacity | 59.93 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | TIETÊ |
| Province | São Paulo |
| River basin | TIETE |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -22.154, -48.754 · Open in Google Maps
About BARIRI
As of September 9, 2026, BARIRI is filled to 97.9% of its total capacity, holding roughly 59 hm³ of water out of a maximum 544 hm³. At this level the reservoir is high. Of that total, about 60 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 3.1 percentage points.
Across the readings we hold for BARIRI — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 40.0% (November 21, 2025) to a high of 100.0% (July 24, 2026). On average the reservoir is fullest around September and at its lowest around November.
It is operated by ONS primarily for hydroelectric power. It lies within the TIETE basin at 22.154°S, 48.754°W.
Key facts
- Current fill level
- 97.9%
- Water stored
- 59 hm³
- Total capacity
- 544 hm³
- Usable capacity
- 60 hm³
- 7-day change
- ▲ 3.1 pts
- Primary use
- Hydroelectric power
- River
- TIETÊ
- River basin
- TIETE
- Operator
- ONS
- Coordinates
- 22.154°S, 48.754°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 97.9% | 59 |
| 4 Sep 2026 | 94.8% | 57 |
| 28 Aug 2026 | 79.3% | 48 |
| 21 Aug 2026 | 77.2% | 46 |
| 14 Aug 2026 | 91.7% | 55 |
| 7 Aug 2026 | 99.0% | 59 |
| 31 Jul 2026 | 91.7% | 55 |
| 24 Jul 2026 | 100.0% | 60 |
| 17 Jul 2026 | 80.3% | 48 |
| 10 Jul 2026 | 77.2% | 46 |
| 3 Jul 2026 | 61.0% | 37 |
| 26 Jun 2026 | 92.7% | 56 |