L. C. BARRETO
São Paulo · GRANDE
Capacity
1,423 hm³
Coordinates
-20.154°N, 47.278°W
Operator
ONS
80.6% full
Current fill
80.6%vs 7 days ago
+9.6%gaining
vs 1 year ago
N/A7-day trend
↑rising
Drought context
Storage vs October average
140%of normal
80.6% full on 2026-10-14, against an average of 57.7% for October across 2 years of readings (+22.9 points).
Rain over the last three months · 21 September 2026
Near normal
In the three months to 21 September 2026 the area around L. C. BARRETO had rain close to 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 +0.55). Rain, not storage. Brazil drought figures →
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 October 14, 2026, L. C. BARRETO is filled to 80.6% of its total capacity, holding roughly 144 hm³ of water out of a maximum 1,423 hm³. At this level the reservoir is high. Of that total, about 178 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 9.6 percentage points.
Across the readings we hold for L. C. BARRETO — 52 data points between October 31, 2025 and October 14, 2026 — the level has ranged from a low of 20.7% (November 28, 2025) to a high of 87.9% (September 11, 2026). 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
- 80.6%
- Water stored
- 144 hm³
- Total capacity
- 1,423 hm³
- Usable capacity
- 178 hm³
- 7-day change
- ▲ 9.6 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.154°S, 47.278°W
- Last updated
- October 14, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 14 Oct 2026 | 80.6% | 144 |
| 9 Oct 2026 | 71.0% | 127 |
| 2 Oct 2026 | 68.9% | 123 |
| 25 Sep 2026 | 73.0% | 130 |
| 18 Sep 2026 | 56.3% | 100 |
| 11 Sep 2026 | 87.9% | 157 |
| 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 |