CORUMBA-4
Goiás · PARANAIBA
Capacity
3,708 hm³
Coordinates
-16.323°N, 48.188°W
Operator
ONS
70.4% full
Current fill
70.4%vs 7 days ago
-2.4%losing
vs 1 year ago
N/A7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 3,708 hm³ |
| Usable capacity | 916.89 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. -16.323, -48.188 · Open in Google Maps
About CORUMBA-4
As of September 12, 2026, CORUMBA-4 is filled to 70.4% of its total capacity, holding roughly 646 hm³ of water out of a maximum 3,708 hm³. At this level the reservoir is within its normal operating range. Of that total, about 917 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 2.4 percentage points.
Across the readings we hold for CORUMBA-4 — 52 data points between October 3, 2025 and September 12, 2026 — the level has ranged from a low of 33.9% (January 2, 2026) to a high of 92.8% (June 19, 2026). On average the reservoir is fullest around June and at its lowest around December.
It is operated by ONS primarily for hydroelectric power. It lies within the PARANAIBA basin at 16.323°S, 48.188°W.
Key facts
- Current fill level
- 70.4%
- Water stored
- 646 hm³
- Total capacity
- 3,708 hm³
- Usable capacity
- 917 hm³
- 7-day change
- ▼ 2.4 pts
- Primary use
- Hydroelectric power
- River
- CORUMBÁ
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 16.323°S, 48.188°W
- Last updated
- September 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Sep 2026 | 70.4% | 646 |
| 11 Sep 2026 | 70.6% | 647 |
| 4 Sep 2026 | 72.8% | 668 |
| 28 Aug 2026 | 75.6% | 694 |
| 21 Aug 2026 | 79.0% | 725 |
| 14 Aug 2026 | 80.9% | 742 |
| 7 Aug 2026 | 83.8% | 768 |
| 31 Jul 2026 | 86.5% | 793 |
| 24 Jul 2026 | 88.6% | 812 |
| 17 Jul 2026 | 89.9% | 824 |
| 10 Jul 2026 | 91.3% | 837 |
| 3 Jul 2026 | 91.5% | 839 |