Olivargas

As of September 1, 2026, Olivargas is filled to 82.8% of its total capacity, holding roughly 24 hm³ of water out of a maximum 29 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 is 3.4 points below its level on the same date a year earlier.

Across the readings we hold for Olivargas — 418 data points between September 4, 2018 and September 1, 2026 — the level has ranged from a low of 79.3% (September 26, 2023) to a high of 103.4% (December 23, 2025). On average the reservoir is fullest around April 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.