Porma-(Juan Benet)

As of September 7, 2026, Porma-(Juan Benet) is filled to 42.5% of its total capacity, holding roughly 135 hm³ of water out of a maximum 318 hm³. At this level the reservoir is within its normal operating range.

Over the most recent week on record the fill level has held broadly steady (-1.5 pts), and it is 2.8 points below its level on the same date a year earlier.

Across the readings we hold for Porma-(Juan Benet) — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 26.4% (October 10, 2023) to a high of 96.2% (May 27, 2025). On average the reservoir is fullest around May and at its lowest around October.

It is operated by Duero. It lies within the Duero basin at 0.000°N, 0.000°E.