Colomera

As of September 7, 2026, Colomera is filled to 80.0% of its total capacity, holding roughly 32 hm³ of water out of a maximum 40 hm³. At this level the reservoir is high. Of that total, about 36 hm³ is usable (live) storage.

Over the most recent week on record the fill level has fallen by 2.5 percentage points, and it is 70.0 points above its level on the same date a year earlier.

Across the readings we hold for Colomera — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 7.5% (September 13, 2022) to a high of 100.0% (February 24, 2026). On average the reservoir is fullest around June and at its lowest around November.

It is operated by CHGu primarily for multiple purposes. It lies within the Guadalquivir basin at 37.405°N, 3.722°W.