BARIRI
São Paulo · TIETE
Capacity
544 hm³
Coordinates
-22.154°N, 48.754°W
Operator
ONS
77.2% full
Current fill
77.2%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs October average
106%of normal
77.2% full on 2026-10-14, against an average of 72.6% for October across 2 years of readings (+4.6 points).
Rain over the last three months · 21 September 2026
Moderately wet
In the three months to 21 September 2026 the area around BARIRI had more rain than normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +1.10). Rain, not storage. Brazil drought figures →
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 October 14, 2026, BARIRI is filled to 77.2% of its total capacity, holding roughly 46 hm³ of water out of a maximum 544 hm³. At this level the reservoir is within its normal operating range. Of that total, about 60 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for BARIRI — 52 data points between October 31, 2025 and October 14, 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 August 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
- 77.2%
- Water stored
- 46 hm³
- Total capacity
- 544 hm³
- Usable capacity
- 60 hm³
- 7-day change
- No change
- Primary use
- Hydroelectric power
- River
- TIETÊ
- River basin
- TIETE
- Operator
- ONS
- Coordinates
- 22.154°S, 48.754°W
- Last updated
- October 14, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 14 Oct 2026 | 77.2% | 46 |
| 9 Oct 2026 | 77.2% | 46 |
| 2 Oct 2026 | 79.3% | 48 |
| 25 Sep 2026 | 93.8% | 56 |
| 18 Sep 2026 | 86.5% | 52 |
| 11 Sep 2026 | 68.1% | 41 |
| 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 |