BAIXO IGUACU
Paraná · IGUACU
Useful capacity
33.22 hm³
Coordinates
25.503°S, 53.678°W
Operator
ONS
29.1% of useful capacity
Current fill
29.1%of useful capacity
vs 7 days ago
+2.0 ppgaining
vs 1 year ago
-23.8 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
64%of normal
29.1% full on 2026-10-27, against an average of 45.5% for October across 2 years of readings (-16.4 points).
Rain over the last three months · 11 October 2026
Very wet
In the three months to 11 October 2026 the area around BAIXO IGUACU had much more rain than normal, seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +1.56). Rain, not storage. Brazil drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 211.92 hm³ |
| Usable capacity | 33.22 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | IGUAÇU |
| Province | Paraná |
| River basin | IGUACU |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 25.503°S, 53.678°W · Open in Google Maps
About BAIXO IGUACU
As of October 27, 2026, BAIXO IGUACU is at 29.1% of useful capacity, holding 9.7 hm³ of 33.22 hm³. Of the 211.92 hm³ total capacity, that is 4.6%. At this level the reservoir is low.
Over the most recent week on record the fill level has risen by 2.0 percentage points, and it is 23.8 points below its level on the same date a year earlier.
Across the readings we hold for BAIXO IGUACU — 65 data points between October 27, 2025 and October 27, 2026 — the level has ranged from a low of 13.5% (November 14, 2025) to a high of 90.7% (August 21, 2026). On average the reservoir is fullest around May and at its lowest around November.
It is operated by ONS primarily for hydroelectric power. It lies within the IGUACU basin at 25.503°S, 53.678°W.
Key facts
- Current fill level
- 29.1% of useful capacity
- Water stored
- 9.7 hm³
- Total capacity
- 211.92 hm³
- Usable capacity
- 33.22 hm³
- 7-day change
- ▲ 2.0 pp
- Year-on-year
- ▼ 23.8 pp
- Primary use
- Hydroelectric power
- River
- IGUAÇU
- River basin
- IGUACU
- Operator
- ONS
- Coordinates
- 25.503°S, 53.678°W
- Last updated
- October 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Oct 2026 | 29.1% | 9.7 |
| 26 Oct 2026 | 28.1% | 9.3 |
| 25 Oct 2026 | 44.9% | 14.9 |
| 24 Oct 2026 | 64.0% | 21.3 |
| 23 Oct 2026 | 33.0% | 11 |
| 22 Oct 2026 | 38.0% | 12.6 |
| 21 Oct 2026 | 50.9% | 16.9 |
| 20 Oct 2026 | 27.1% | 9 |
| 19 Oct 2026 | 29.1% | 9.7 |
| 18 Oct 2026 | 45.9% | 15.3 |
| 17 Oct 2026 | 41.0% | 13.6 |
| 16 Oct 2026 | 21.3% | 7.1 |