ITUMBIARA

As of October 7, 2026, ITUMBIARA is filled to 67.6% of its total capacity, holding roughly 8,414 hm³ of water out of a maximum 17,027 hm³. At this level the reservoir is within its normal operating range. Of that total, about 12,454 hm³ is usable (live) storage.

Over the most recent week on record the fill level has held broadly steady (-0.4 pts).

Across the readings we hold for ITUMBIARA — 52 data points between October 24, 2025 and October 7, 2026 — the level has ranged from a low of 32.1% (January 2, 2026) to a high of 85.5% (June 5, 2026). On average the reservoir is fullest around May and at its lowest around December.

It is operated by ONS primarily for hydroelectric power. It lies within the PARANAIBA basin at 18.409°S, 49.097°W.