L. C. BARRETO
São Paulo · GRANDE
Useful capacity
178.2 hm³
Coordinates
20.154°S, 47.278°W
Operator
ONS
38.6% of useful capacity
Current fill
38.6%of useful capacity
vs 7 days ago
-19.4 pplosing
vs 1 year ago
-13.4 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
67%of normal
38.6% full on 2026-10-26, against an average of 57.4% for October across 2 years of readings (-18.8 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 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 +0.88). 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 |
| Province | São Paulo |
| River basin | GRANDE |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 20.154°S, 47.278°W · Open in Google Maps
About L. C. BARRETO
As of October 26, 2026, L. C. BARRETO is at 38.6% of useful capacity, holding 68.9 hm³ of 178.2 hm³. Of the 1,423 hm³ total capacity, that is 4.8%. At this level the reservoir is low.
Over the most recent week on record the fill level has fallen by 19.4 percentage points, and it is 13.4 points below its level on the same date a year earlier.
Across the readings we hold for L. C. BARRETO — 65 data points between October 26, 2025 and October 26, 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
- 38.6% of useful capacity
- Water stored
- 68.9 hm³
- Total capacity
- 1,423 hm³
- Usable capacity
- 178.2 hm³
- 7-day change
- ▼ 19.4 pp
- Year-on-year
- ▼ 13.4 pp
- Primary use
- Hydroelectric power
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.154°S, 47.278°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 38.6% | 68.9 |
| 25 Oct 2026 | 47.7% | 85.1 |
| 24 Oct 2026 | 57.6% | 102.6 |
| 23 Oct 2026 | 54.8% | 97.7 |
| 22 Oct 2026 | 57.1% | 101.7 |
| 21 Oct 2026 | 57.8% | 103.1 |
| 20 Oct 2026 | 61.9% | 110.3 |
| 19 Oct 2026 | 58.1% | 103.5 |
| 18 Oct 2026 | 55.3% | 98.5 |
| 17 Oct 2026 | 67.2% | 119.7 |
| 16 Oct 2026 | 72.0% | 128.3 |
| 15 Oct 2026 | 78.3% | 139.5 |