L. C. BARRETO
São Paulo · GRANDE
Capacity
1,423 hm³
Coordinates
-20.154°N, 47.278°W
Operator
ONS
74.8% full
Current fill
74.8%vs 7 days ago
-9.3%losing
vs 1 year ago
N/A7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 1,423 hm³ |
| Usable capacity | 178.2 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | GRANDE |
| Province | São Paulo |
| River basin | GRANDE |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -20.154, -47.278 · Open in Google Maps
About L. C. BARRETO
As of September 9, 2026, L. C. BARRETO is filled to 74.8% of its total capacity, holding roughly 133 hm³ of water out of a maximum 1,423 hm³. At this level the reservoir is within its normal operating range. Of that total, about 178 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 9.3 percentage points.
Across the readings we hold for L. C. BARRETO — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 20.7% (November 28, 2025) to a high of 86.1% (November 7, 2025). On average the reservoir is fullest around September and at its lowest around May.
It is operated by ONS primarily for hydroelectric power. It lies within the GRANDE basin at 20.154°S, 47.278°W.
Key facts
- Current fill level
- 74.8%
- Water stored
- 133 hm³
- Total capacity
- 1,423 hm³
- Usable capacity
- 178 hm³
- 7-day change
- ▼ 9.3 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.154°S, 47.278°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 74.8% | 133 |
| 4 Sep 2026 | 84.1% | 150 |
| 28 Aug 2026 | 52.3% | 93 |
| 21 Aug 2026 | 22.4% | 40 |
| 14 Aug 2026 | 28.5% | 51 |
| 7 Aug 2026 | 46.2% | 82 |
| 31 Jul 2026 | 65.2% | 116 |
| 24 Jul 2026 | 72.7% | 130 |
| 17 Jul 2026 | 59.1% | 105 |
| 10 Jul 2026 | 30.0% | 53 |
| 3 Jul 2026 | 20.6% | 37 |
| 26 Jun 2026 | 32.9% | 59 |