ITAUBA
Rio Grande do Sul · JACUI
Capacity
620 hm³
Coordinates
-29.259°N, 53.236°W
Operator
ONS
64.9% full
Current fill
64.9%vs 7 days ago
+4.9%gaining
vs 1 year ago
N/A7-day trend
↑rising
Drought context
Storage vs October average
96%of normal
64.9% full on 2026-10-14, against an average of 67.3% for October across 2 years of readings (-2.4 points).
Rain over the last three months · 21 September 2026
Extremely wet
In the three months to 21 September 2026 the area around ITAUBA had exceptionally wet, seen about one year in forty. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +2.60). Rain, not storage. Brazil drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 620 hm³ |
| Usable capacity | 158.2 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | JACUÍ |
| Province | Rio Grande do Sul |
| River basin | JACUI |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -29.259, -53.236 · Open in Google Maps
About ITAUBA
As of October 14, 2026, ITAUBA is filled to 64.9% of its total capacity, holding roughly 103 hm³ of water out of a maximum 620 hm³. At this level the reservoir is within its normal operating range. Of that total, about 158 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 4.9 percentage points.
Across the readings we hold for ITAUBA — 52 data points between October 31, 2025 and October 14, 2026 — the level has ranged from a low of 36.6% (February 6, 2026) to a high of 90.9% (April 10, 2026). On average the reservoir is fullest around December and at its lowest around March.
It is operated by ONS primarily for hydroelectric power. It lies within the JACUI basin at 29.259°S, 53.236°W.
Key facts
- Current fill level
- 64.9%
- Water stored
- 103 hm³
- Total capacity
- 620 hm³
- Usable capacity
- 158 hm³
- 7-day change
- ▲ 4.9 pts
- Primary use
- Hydroelectric power
- River
- JACUÍ
- River basin
- JACUI
- Operator
- ONS
- Coordinates
- 29.259°S, 53.236°W
- Last updated
- October 14, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 14 Oct 2026 | 64.9% | 103 |
| 9 Oct 2026 | 60.0% | 95 |
| 2 Oct 2026 | 62.3% | 99 |
| 25 Sep 2026 | 75.7% | 120 |
| 18 Sep 2026 | 56.5% | 89 |
| 11 Sep 2026 | 70.2% | 111 |
| 4 Sep 2026 | 67.9% | 107 |
| 28 Aug 2026 | 56.2% | 89 |
| 21 Aug 2026 | 69.3% | 110 |
| 14 Aug 2026 | 68.0% | 108 |
| 7 Aug 2026 | 58.0% | 92 |
| 31 Jul 2026 | 67.8% | 107 |