A. VERMELHA
São Paulo · GRANDE
Capacity
11,025 hm³
Coordinates
-19.868°N, 50.343°W
Operator
ONS
52.1% full
Current fill
52.1%vs 7 days ago
-1.7%losing
vs 1 year ago
+11.0%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 July 28, 2026, A. VERMELHA is filled to 52.1% of its total capacity, holding roughly 2,693 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 1.7 percentage points, and it is 11.0 points above its level on the same date a year earlier.
Across the readings we hold for A. VERMELHA — 52 data points between August 15, 2025 and July 28, 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
- 52.1%
- Water stored
- 2,693 hm³
- Total capacity
- 11,025 hm³
- Usable capacity
- 5,169 hm³
- 7-day change
- ▼ 1.7 pts
- Year-on-year
- ▲ 11.0 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 19.868°S, 50.343°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 52.1% | 2,693 |
| 24 Jul 2026 | 53.8% | 2,781 |
| 17 Jul 2026 | 58.3% | 3,012 |
| 10 Jul 2026 | 60.1% | 3,107 |
| 3 Jul 2026 | 62.0% | 3,203 |
| 26 Jun 2026 | 63.5% | 3,283 |
| 19 Jun 2026 | 64.6% | 3,340 |
| 12 Jun 2026 | 62.6% | 3,238 |
| 5 Jun 2026 | 64.2% | 3,317 |
| 29 May 2026 | 66.7% | 3,449 |
| 22 May 2026 | 69.4% | 3,589 |
| 15 May 2026 | 72.4% | 3,742 |
Frequently asked questions
What is the current water level of A. VERMELHA?
As of July 28, 2026, A. VERMELHA is at 52.1% of its capacity, holding approximately 2,693 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is A. VERMELHA reservoir full?
No. As of July 28, 2026, A. VERMELHA is within its normal operating range at 52.1% 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 1.7 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.