CORUMBA-3
Goiás · PARANAIBA
Capacity
972 hm³
Coordinates
-16.786°N, 47.942°W
Operator
ONS
23.7% full
Current fill
23.7%vs 7 days ago
-3.6%losing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
73%of normal
23.7% full on 2026-10-12, against an average of 32.4% for October across 2 years of readings (-8.7 points).
Rain over the last three months · 21 September 2026
Near normal
In the three months to 21 September 2026 the area around CORUMBA-3 had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +0.43). Rain, not storage. Brazil drought figures →
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 October 12, 2026, CORUMBA-3 is filled to 23.7% of its total capacity, holding roughly 62 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 fallen by 3.6 percentage points.
Across the readings we hold for CORUMBA-3 — 52 data points between October 31, 2025 and October 12, 2026 — the level has ranged from a low of 23.5% (October 9, 2026) to a high of 71.7% (March 27, 2026). On average the reservoir is fullest around April and at its lowest around October.
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
- 23.7%
- Water stored
- 62 hm³
- Total capacity
- 972 hm³
- Usable capacity
- 260 hm³
- 7-day change
- ▼ 3.6 pts
- Primary use
- Hydroelectric power
- River
- CORUMBÁ
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 16.786°S, 47.942°W
- Last updated
- October 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Oct 2026 | 23.7% | 62 |
| 9 Oct 2026 | 23.5% | 61 |
| 2 Oct 2026 | 27.3% | 71 |
| 25 Sep 2026 | 28.9% | 75 |
| 18 Sep 2026 | 30.6% | 80 |
| 11 Sep 2026 | 33.3% | 86 |
| 4 Sep 2026 | 34.7% | 90 |
| 28 Aug 2026 | 37.6% | 98 |
| 21 Aug 2026 | 40.8% | 106 |
| 14 Aug 2026 | 44.5% | 116 |
| 7 Aug 2026 | 43.5% | 113 |
| 31 Jul 2026 | 41.3% | 107 |