Barrié de la Maza

As of September 7, 2026, Barrié de la Maza is filled to 32.3% of its total capacity, holding roughly 10 hm³ of water out of a maximum 31 hm³. At this level the reservoir is low. Of that total, about 28 hm³ is usable (live) storage.

Over the most recent week on record the fill level has risen by 3.3 percentage points, and it is 3.2 points below its level on the same date a year earlier.

Across the readings we hold for Barrié de la Maza — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 16.1% (October 9, 2018) to a high of 80.6% (December 25, 2018). On average the reservoir is fullest around January and at its lowest around September.

It is operated by AGA primarily for multiple purposes. It lies within the Galicia Costa basin at 42.866°N, 8.789°W.