CANA BRAVA
Goiás · TOCANTINS
Useful capacity
393.87 hm³
Coordinates
13.404°S, 48.142°W
Operator
ONS
91.5% of useful capacity
Current fill
91.5%of useful capacity
vs 7 days ago
-2.5 pplosing
vs 1 year ago
-2.1 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
98%of normal
91.5% full on 2026-10-26, against an average of 93.4% for October across 2 years of readings (-1.9 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around CANA BRAVA 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 −0.23). Rain, not storage. Brazil drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 2,300 hm³ |
| Usable capacity | 393.87 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| Province | Goiás |
| River basin | TOCANTINS |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 13.404°S, 48.142°W · Open in Google Maps
About CANA BRAVA
As of October 26, 2026, CANA BRAVA is at 91.5% of useful capacity, holding 360.5 hm³ of 393.87 hm³. Of the 2,300 hm³ total capacity, that is 15.7%. At this level the reservoir is high.
Over the most recent week on record the fill level has fallen by 2.5 percentage points, and it is 2.1 points below its level on the same date a year earlier.
Across the readings we hold for CANA BRAVA — 65 data points between October 26, 2025 and October 26, 2026 — the level has ranged from a low of 69.0% (April 24, 2026) to a high of 96.5% (September 4, 2026). On average the reservoir is fullest around September and at its lowest around April.
It is operated by ONS primarily for hydroelectric power. It lies within the TOCANTINS basin at 13.404°S, 48.142°W.
Key facts
- Current fill level
- 91.5% of useful capacity
- Water stored
- 360.5 hm³
- Total capacity
- 2,300 hm³
- Usable capacity
- 393.87 hm³
- 7-day change
- ▼ 2.5 pp
- Year-on-year
- ▼ 2.1 pp
- Primary use
- Hydroelectric power
- River basin
- TOCANTINS
- Operator
- ONS
- Coordinates
- 13.404°S, 48.142°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 91.5% | 360.5 |
| 25 Oct 2026 | 91.2% | 359.2 |
| 24 Oct 2026 | 93.7% | 368.9 |
| 23 Oct 2026 | 93.7% | 368.9 |
| 22 Oct 2026 | 95.1% | 374.4 |
| 21 Oct 2026 | 96.1% | 378.5 |
| 20 Oct 2026 | 92.6% | 364.7 |
| 19 Oct 2026 | 94.0% | 370.2 |
| 18 Oct 2026 | 89.8% | 353.7 |
| 17 Oct 2026 | 95.1% | 374.4 |
| 16 Oct 2026 | 95.8% | 377.2 |
| 15 Oct 2026 | 95.1% | 374.4 |