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URUGUAI
FullHydroelectric

GARIBALDI

Santa Catarina · URUGUAI

Capacity

296 hm³

Coordinates

-27.625°N, 50.984°W

Operator

ONS

105.0% full

Current fill

105.0%
Full

vs 7 days ago

0.0%

stable

vs 1 year ago

N/A

7-day trend

stable

Catchment Weather

Past 30 days + 14-day forecast · Open-Meteo

Technical specifications

Total capacity296 hm³
Usable capacity64.23 hm³
Primary useHydroelectric
OperatorONS
RiverCANOAS
ProvinceSanta Catarina
River basinURUGUAI
Data source:ONS – Operador Nacional do Sistema Elétrico·Last reading: 2026-09-09

Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -27.625, -50.984 · Open in Google Maps

About GARIBALDI

As of September 9, 2026, GARIBALDI is filled to 105.0% of its total capacity, holding roughly 67 hm³ of water out of a maximum 296 hm³. At this level the reservoir is effectively full. Of that total, about 64 hm³ is usable (live) storage.

Over the most recent week on record the fill level has held broadly steady (+0.0 pts).

Across the readings we hold for GARIBALDI — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 12.8% (March 6, 2026) to a high of 105.0% (September 26, 2025). On average the reservoir is fullest around July and at its lowest around June.

It is operated by ONS primarily for hydroelectric power. It lies within the URUGUAI basin at 27.625°S, 50.984°W.

Key facts

Current fill level
105.0%
Water stored
67 hm³
Total capacity
296 hm³
Usable capacity
64 hm³
7-day change
No change
Primary use
Hydroelectric power
River
CANOAS
River basin
URUGUAI
Operator
ONS
Coordinates
27.625°S, 50.984°W
Last updated
September 9, 2026

Recent readings

DateFill levelVolume (hm³)
9 Sep 2026105.0%67
4 Sep 2026105.0%67
28 Aug 202694.5%61
21 Aug 2026105.0%67
14 Aug 2026105.0%67
7 Aug 2026105.0%67
31 Jul 2026105.0%67
24 Jul 2026105.0%67
17 Jul 2026105.0%67
10 Jul 2026105.0%67
3 Jul 2026105.0%67
26 Jun 202618.5%12

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