CANOAS I
Paraná · PARANAPANEMA
Capacity
212 hm³
Coordinates
-22.942°N, 50.516°W
Operator
ONS
93.7% full
Current fill
93.7%vs 7 days ago
-3.1%losing
vs 1 year ago
+3.1%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 212 hm³ |
| Usable capacity | 27.7 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | PARANAPANEMA |
| Province | Paraná |
| River basin | PARANAPANEMA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -22.942, -50.516 · Open in Google Maps
About CANOAS I
As of July 28, 2026, CANOAS I is filled to 93.7% of its total capacity, holding roughly 26 hm³ of water out of a maximum 212 hm³. At this level the reservoir is high. Of that total, about 28 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 3.1 percentage points, and it is 3.1 points above its level on the same date a year earlier.
Across the readings we hold for CANOAS I — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 80.2% (March 6, 2026) to a high of 99.0% (March 13, 2026). On average the reservoir is fullest around February and at its lowest around January.
It is operated by ONS primarily for hydroelectric power. It lies within the PARANAPANEMA basin at 22.942°S, 50.516°W.
Key facts
- Current fill level
- 93.7%
- Water stored
- 26 hm³
- Total capacity
- 212 hm³
- Usable capacity
- 28 hm³
- 7-day change
- ▼ 3.1 pts
- Year-on-year
- ▲ 3.1 pts
- Primary use
- Hydroelectric power
- River
- PARANAPANEMA
- River basin
- PARANAPANEMA
- Operator
- ONS
- Coordinates
- 22.942°S, 50.516°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 93.7% | 26 |
| 24 Jul 2026 | 96.9% | 27 |
| 17 Jul 2026 | 91.6% | 25 |
| 10 Jul 2026 | 87.4% | 24 |
| 3 Jul 2026 | 86.4% | 24 |
| 26 Jun 2026 | 91.6% | 25 |
| 19 Jun 2026 | 87.4% | 24 |
| 12 Jun 2026 | 86.4% | 24 |
| 5 Jun 2026 | 91.6% | 25 |
| 29 May 2026 | 87.4% | 24 |
| 22 May 2026 | 92.7% | 26 |
| 15 May 2026 | 93.7% | 26 |
Frequently asked questions
What is the current water level of CANOAS I?
As of July 28, 2026, CANOAS I is at 93.7% of its capacity, holding approximately 26 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is CANOAS I reservoir full?
No. As of July 28, 2026, CANOAS I is high at 93.7% of its capacity, so it is not full.
Is the water level at CANOAS I rising or falling?
The level at CANOAS I is falling — it dropped 3.1 percentage points over the latest week on record.
How much water can CANOAS I hold?
CANOAS I has a total capacity of 212 hm³, of which about 28 hm³ is usable storage.
Where is CANOAS I reservoir located?
CANOAS I is located in Paraná, Brazil, within the PARANAPANEMA basin (coordinates 22.942°S, 50.516°W).
What is CANOAS I used for?
CANOAS I is used primarily for hydroelectric power, and is managed by ONS.