FOZ CHAPECO
Rio Grande do Sul · URUGUAI
Useful capacity
78.81 hm³
Coordinates
27.140°S, 53.047°W
Operator
ONS
36.7% of useful capacity
Current fill
36.7%of useful capacity
vs 7 days ago
-12.0 pplosing
vs 1 year ago
+10.9 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
112%of normal
36.7% full on 2026-10-27, against an average of 32.8% for October across 2 years of readings (+3.9 points).
Rain over the last three months · 11 October 2026
Very wet
In the three months to 11 October 2026 the area around FOZ CHAPECO 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 +1.57). Rain, not storage. Brazil drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 1,502 hm³ |
| Usable capacity | 78.81 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| Province | Rio Grande do Sul |
| River basin | URUGUAI |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 27.140°S, 53.047°W · Open in Google Maps
About FOZ CHAPECO
As of October 27, 2026, FOZ CHAPECO is at 36.7% of useful capacity, holding 28.9 hm³ of 78.81 hm³. Of the 1,502 hm³ total capacity, that is 1.9%. At this level the reservoir is low.
Over the most recent week on record the fill level has fallen by 12.0 percentage points, and it is 10.9 points above its level on the same date a year earlier.
Across the readings we hold for FOZ CHAPECO — 65 data points between October 27, 2025 and October 27, 2026 — the level has ranged from a low of 20.8% (July 24, 2026) to a high of 72.7% (August 7, 2026). On average the reservoir is fullest around August and at its lowest around September.
It is operated by ONS primarily for hydroelectric power. It lies within the URUGUAI basin at 27.140°S, 53.047°W.
Key facts
- Current fill level
- 36.7% of useful capacity
- Water stored
- 28.9 hm³
- Total capacity
- 1,502 hm³
- Usable capacity
- 78.81 hm³
- 7-day change
- ▼ 12.0 pp
- Year-on-year
- ▲ 10.9 pp
- Primary use
- Hydroelectric power
- River basin
- URUGUAI
- Operator
- ONS
- Coordinates
- 27.140°S, 53.047°W
- Last updated
- October 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Oct 2026 | 36.7% | 28.9 |
| 26 Oct 2026 | 46.6% | 36.8 |
| 25 Oct 2026 | 36.7% | 28.9 |
| 24 Oct 2026 | 46.6% | 36.8 |
| 23 Oct 2026 | 24.7% | 19.5 |
| 22 Oct 2026 | 49.6% | 39.1 |
| 21 Oct 2026 | 44.6% | 35.2 |
| 20 Oct 2026 | 48.6% | 38.3 |
| 19 Oct 2026 | 30.7% | 24.2 |
| 18 Oct 2026 | 36.7% | 28.9 |
| 17 Oct 2026 | 40.7% | 32 |
| 16 Oct 2026 | 46.6% | 36.8 |