A. VERMELHA
São Paulo · GRANDE
Capacity
11,025 hm³
Coordinates
-19.868°N, 50.343°W
Operator
ONS
Current fill
62.5%vs 7 days ago
-1.8%losing
vs 1 year ago
+27.0%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 11,025 hm³ |
| Usable capacity | 5,169.22 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. -19.868, -50.343 · Open in Google Maps
About A. VERMELHA
As of June 10, 2026, A. VERMELHA is filled to 62.5% of its total capacity, holding roughly 3,232 hm³ of water out of a maximum 11,025 hm³. At this level the reservoir is within its normal operating range. Of that total, about 5,169 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 1.8 percentage points, and it is 27.0 points above its level on the same date a year earlier.
Across the readings we hold for A. VERMELHA — 52 data points between June 27, 2025 and June 10, 2026 — the level has ranged from a low of 18.3% (December 5, 2025) to a high of 77.9% (May 1, 2026). On average the reservoir is fullest around April and at its lowest around November.
It is operated by ONS primarily for hydroelectric power. It lies within the GRANDE basin at 19.868°S, 50.343°W.
Key facts
- Current fill level
- 62.5%
- Water stored
- 3,232 hm³
- Total capacity
- 11,025 hm³
- Usable capacity
- 5,169 hm³
- 7-day change
- ▼ 1.8 pts
- Year-on-year
- ▲ 27.0 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 19.868°S, 50.343°W
- Last updated
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 62.5% | 3,232 |
| 5 Jun 2026 | 64.3% | 3,323 |
| 29 May 2026 | 66.7% | 3,449 |
| 22 May 2026 | 69.4% | 3,589 |
| 15 May 2026 | 72.4% | 3,742 |
| 8 May 2026 | 74.9% | 3,872 |
| 1 May 2026 | 77.9% | 4,027 |
| 24 Apr 2026 | 77.7% | 4,016 |
| 17 Apr 2026 | 75.4% | 3,896 |
| 10 Apr 2026 | 75.6% | 3,907 |
| 3 Apr 2026 | 75.4% | 3,896 |
| 27 Mar 2026 | 77.2% | 3,991 |
Frequently asked questions
What is the current water level of A. VERMELHA?
As of June 10, 2026, A. VERMELHA is at 62.5% of its capacity, holding approximately 3,232 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is A. VERMELHA reservoir full?
No. As of June 10, 2026, A. VERMELHA is within its normal operating range at 62.5% of its capacity, so it is not full.
Is the water level at A. VERMELHA rising or falling?
The level at A. VERMELHA is falling — it dropped 1.8 percentage points over the latest week on record.
How much water can A. VERMELHA hold?
A. VERMELHA has a total capacity of 11,025 hm³, of which about 5,169 hm³ is usable storage.
Where is A. VERMELHA reservoir located?
A. VERMELHA is located in São Paulo, Brazil, within the GRANDE basin (coordinates 19.868°S, 50.343°W).
What is A. VERMELHA used for?
A. VERMELHA is used primarily for hydroelectric power, and is managed by ONS.