Bao

As of September 7, 2026, Bao is filled to 94.1% of its total capacity, holding roughly 224 hm³ of water out of a maximum 238 hm³. At this level the reservoir is high. Of that total, about 214 hm³ is usable (live) storage.

Over the most recent week on record the fill level has held broadly steady (+0.8 pts), and it is 17.2 points above its level on the same date a year earlier.

Across the readings we hold for Bao — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 46.2% (September 21, 2021) to a high of 97.9% (September 11, 2018). On average the reservoir is fullest around February and at its lowest around October.

It is operated by CHS primarily for multiple purposes. It lies within the Miño - Sil basin at 42.219°N, 7.140°W.