CURUA-UNA
Pará · AMAZONAS
Capacity
602 hm³
Coordinates
-2.816°N, 54.301°W
Operator
ONS
Current fill
98.3%vs 7 days ago
+4.2%gaining
vs 1 year ago
-4.0%year-over-year
7-day trend
↑rising
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 602 hm³ |
| Usable capacity | 469 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | CURUÁ-UNA |
| Province | Pará |
| River basin | AMAZONAS |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -2.816, -54.301 · Open in Google Maps
About CURUA-UNA
As of June 10, 2026, CURUA-UNA is filled to 98.3% of its total capacity, holding roughly 461 hm³ of water out of a maximum 602 hm³. At this level the reservoir is high. Of that total, about 469 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 4.2 percentage points, and it is 4.0 points below its level on the same date a year earlier.
Across the readings we hold for CURUA-UNA — 52 data points between June 27, 2025 and June 10, 2026 — the level has ranged from a low of 11.7% (December 19, 2025) to a high of 102.3% (June 27, 2025). On average the reservoir is fullest around July and at its lowest around December.
It is operated by ONS primarily for hydroelectric power. It lies within the AMAZONAS basin at 2.816°S, 54.301°W.
Key facts
- Current fill level
- 98.3%
- Water stored
- 461 hm³
- Total capacity
- 602 hm³
- Usable capacity
- 469 hm³
- 7-day change
- ▲ 4.2 pts
- Year-on-year
- ▼ 4.0 pts
- Primary use
- Hydroelectric power
- River
- CURUÁ-UNA
- River basin
- AMAZONAS
- Operator
- ONS
- Coordinates
- 2.816°S, 54.301°W
- Last updated
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 98.3% | 461 |
| 5 Jun 2026 | 94.2% | 442 |
| 29 May 2026 | 93.1% | 437 |
| 22 May 2026 | 97.3% | 456 |
| 15 May 2026 | 97.3% | 456 |
| 8 May 2026 | 95.4% | 448 |
| 1 May 2026 | 93.1% | 437 |
| 24 Apr 2026 | 94.6% | 444 |
| 17 Apr 2026 | 93.1% | 437 |
| 10 Apr 2026 | 90.0% | 422 |
| 3 Apr 2026 | 91.9% | 431 |
| 27 Mar 2026 | 90.6% | 425 |
Frequently asked questions
What is the current water level of CURUA-UNA?
As of June 10, 2026, CURUA-UNA is at 98.3% of its capacity, holding approximately 461 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is CURUA-UNA reservoir full?
CURUA-UNA is essentially full, sitting at 98.3% of capacity as of June 10, 2026.
Is the water level at CURUA-UNA rising or falling?
The level at CURUA-UNA is rising — it gained 4.2 percentage points over the latest week on record.
How much water can CURUA-UNA hold?
CURUA-UNA has a total capacity of 602 hm³, of which about 469 hm³ is usable storage.
Where is CURUA-UNA reservoir located?
CURUA-UNA is located in Pará, Brazil, within the AMAZONAS basin (coordinates 2.816°S, 54.301°W).
What is CURUA-UNA used for?
CURUA-UNA is used primarily for hydroelectric power, and is managed by ONS.