Puentes Viejas

As of September 7, 2026, Puentes Viejas is filled to 64.2% of its total capacity, holding roughly 34 hm³ of water out of a maximum 53 hm³. At this level the reservoir is within its normal operating range. Of that total, about 48 hm³ is usable (live) storage.

Over the most recent week on record the fill level has fallen by 1.8 percentage points, and it is 16.9 points below its level on the same date a year earlier.

Across the readings we hold for Puentes Viejas — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 39.6% (August 2, 2022) to a high of 98.1% (June 10, 2025). On average the reservoir is fullest around April and at its lowest around November.

It is operated by CHT primarily for multiple purposes. It lies within the Tajo basin at 40.996°N, 3.598°W.