CORUMBA-3
Goiás · PARANAIBA
Useful capacity
259.7 hm³
Coordinates
16.786°S, 47.942°W
Operator
ONS
20.4% of useful capacity
Current fill
20.4%of useful capacity
vs 7 days ago
-2.3 pplosing
vs 1 year ago
-16.7 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
67%of normal
20.4% full on 2026-10-26, against an average of 30.3% for October across 2 years of readings (-9.9 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 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 +0.49). 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°S, 47.942°W · Open in Google Maps
About CORUMBA-3
As of October 26, 2026, CORUMBA-3 is at 20.4% of useful capacity, holding 53.1 hm³ of 259.7 hm³. Of the 972 hm³ total capacity, that is 5.5%. At this level the reservoir is low.
Over the most recent week on record the fill level has fallen by 2.3 percentage points, and it is 16.7 points below its level on the same date a year earlier.
Across the readings we hold for CORUMBA-3 — 65 data points between October 26, 2025 and October 26, 2026 — the level has ranged from a low of 20.4% (October 26, 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
- 20.4% of useful capacity
- Water stored
- 53.1 hm³
- Total capacity
- 972 hm³
- Usable capacity
- 259.7 hm³
- 7-day change
- ▼ 2.3 pp
- Year-on-year
- ▼ 16.7 pp
- Primary use
- Hydroelectric power
- River
- CORUMBÁ
- River basin
- PARANAIBA
- Operator
- ONS
- Coordinates
- 16.786°S, 47.942°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 20.4% | 53.1 |
| 25 Oct 2026 | 22.5% | 58.5 |
| 24 Oct 2026 | 22.8% | 59.2 |
| 23 Oct 2026 | 24.4% | 63.4 |
| 22 Oct 2026 | 22.8% | 59.2 |
| 21 Oct 2026 | 22.8% | 59.2 |
| 20 Oct 2026 | 23.5% | 61 |
| 19 Oct 2026 | 22.8% | 59.2 |
| 18 Oct 2026 | 22.8% | 59.2 |
| 17 Oct 2026 | 23.9% | 62.2 |
| 16 Oct 2026 | 24.4% | 63.4 |
| 15 Oct 2026 | 24.9% | 64.7 |