Piedras

As of September 1, 2026, Piedras is filled to 68.3% of its total capacity, holding roughly 41 hm³ of water out of a maximum 60 hm³. At this level the reservoir is within its normal operating range.

Over the most recent week on record the fill level has fallen by 1.7 percentage points, and it sits close to where it was a year earlier.

Across the readings we hold for Piedras — 418 data points between September 4, 2018 and September 1, 2026 — the level has ranged from a low of 35.0% (October 1, 2019) to a high of 100.0% (December 13, 2022). On average the reservoir is fullest around May and at its lowest around October.

It is operated by Tinto, Odiel y Piedras. It lies within the Tinto, Odiel y Piedras basin at 0.000°N, 0.000°E.