L. C. BARRETO
São Paulo · GRANDE
Capacity
1,423 hm³
Coordinates
-20.154°N, 47.278°W
Operator
ONS
68.7% full
Current fill
68.7%vs 7 days ago
-4.0%losing
vs 1 year ago
+30.8%year-over-year
7-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 July 28, 2026, L. C. BARRETO is filled to 68.7% of its total capacity, holding roughly 122 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 4.0 percentage points, and it is 30.8 points above its level on the same date a year earlier.
Across the readings we hold for L. C. BARRETO — 52 data points between August 15, 2025 and July 28, 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 October 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
- 68.7%
- Water stored
- 122 hm³
- Total capacity
- 1,423 hm³
- Usable capacity
- 178 hm³
- 7-day change
- ▼ 4.0 pts
- Year-on-year
- ▲ 30.8 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.154°S, 47.278°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 68.7% | 122 |
| 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 |
| 19 Jun 2026 | 37.4% | 67 |
| 12 Jun 2026 | 46.0% | 82 |
| 5 Jun 2026 | 53.8% | 96 |
| 29 May 2026 | 41.7% | 74 |
| 22 May 2026 | 31.7% | 57 |
| 15 May 2026 | 20.9% | 37 |
Frequently asked questions
What is the current water level of L. C. BARRETO?
As of July 28, 2026, L. C. BARRETO is at 68.7% of its capacity, holding approximately 122 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is L. C. BARRETO reservoir full?
No. As of July 28, 2026, L. C. BARRETO is within its normal operating range at 68.7% of its capacity, so it is not full.
Is the water level at L. C. BARRETO rising or falling?
The level at L. C. BARRETO is falling — it dropped 4.0 percentage points over the latest week on record.
How much water can L. C. BARRETO hold?
L. C. BARRETO has a total capacity of 1,423 hm³, of which about 178 hm³ is usable storage.
Where is L. C. BARRETO reservoir located?
L. C. BARRETO is located in São Paulo, Brazil, within the GRANDE basin (coordinates 20.154°S, 47.278°W).
What is L. C. BARRETO used for?
L. C. BARRETO is used primarily for hydroelectric power, and is managed by ONS.