CORUMBA-3
Goiás · PARANAIBA
Capacity
972 hm³
Coordinates
-16.786°N, 47.942°W
Operator
ONS
39.6% full
Current fill
39.6%vs 7 days ago
+2.0%gaining
vs 1 year ago
-24.2%year-over-year
7-day trend
↑rising
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 972 hm³ |
| Usable capacity | 259.7 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | CORUMBÁ |
| Province | Goiás |
| River basin | PARANAIBA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -16.786, -47.942 · Open in Google Maps
About CORUMBA-3
As of July 28, 2026, CORUMBA-3 is filled to 39.6% of its total capacity, holding roughly 103 hm³ of water out of a maximum 972 hm³. At this level the reservoir is low. Of that total, about 260 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 2.0 percentage points, and it is 24.2 points below its level on the same date a year earlier.
Across the readings we hold for CORUMBA-3 — 52 data points between August 15, 2025 and July 28, 2026 — the level has ranged from a low of 27.5% (December 5, 2025) to a high of 71.7% (March 27, 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 PARANAIBA basin at 16.786°S, 47.942°W.
Key facts
- Current fill level
- 39.6%
- Water stored
- 103 hm³
- Total capacity
- 972 hm³
- Usable capacity
- 260 hm³
- 7-day change
- ▲ 2.0 pts
- Year-on-year
- ▼ 24.2 pts
- Primary use
- Hydroelectric power
- River
- CORUMBÁ
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 16.786°S, 47.942°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 39.6% | 103 |
| 24 Jul 2026 | 37.6% | 98 |
| 17 Jul 2026 | 39.3% | 102 |
| 10 Jul 2026 | 45.0% | 117 |
| 3 Jul 2026 | 47.5% | 123 |
| 26 Jun 2026 | 49.8% | 129 |
| 19 Jun 2026 | 51.8% | 134 |
| 12 Jun 2026 | 50.8% | 132 |
| 5 Jun 2026 | 53.5% | 139 |
| 29 May 2026 | 56.6% | 147 |
| 22 May 2026 | 57.9% | 150 |
| 15 May 2026 | 62.0% | 161 |
Frequently asked questions
What is the current water level of CORUMBA-3?
As of July 28, 2026, CORUMBA-3 is at 39.6% of its capacity, holding approximately 103 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is CORUMBA-3 reservoir full?
No. As of July 28, 2026, CORUMBA-3 is low at 39.6% of its capacity, so it is not full.
Is the water level at CORUMBA-3 rising or falling?
The level at CORUMBA-3 is rising — it gained 2.0 percentage points over the latest week on record.
How much water can CORUMBA-3 hold?
CORUMBA-3 has a total capacity of 972 hm³, of which about 260 hm³ is usable storage.
Where is CORUMBA-3 reservoir located?
CORUMBA-3 is located in Goiás, Brazil, within the PARANAIBA basin (coordinates 16.786°S, 47.942°W).
What is CORUMBA-3 used for?
CORUMBA-3 is used primarily for hydroelectric power, and is managed by ONS.