San Martiño

As of September 7, 2026, San Martiño is filled to 90.0% of its total capacity, holding roughly 9 hm³ of water out of a maximum 10 hm³. At this level the reservoir is high.

Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it sits close to where it was a year earlier.

Across the readings we hold for San Martiño — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 80.0% (January 3, 2023) to a high of 100.0% (September 4, 2018). On average the reservoir is fullest around January and at its lowest around April.

It is operated by Miño - Sil. It lies within the Miño - Sil basin at 0.000°N, 0.000°E.