El Grado

As of September 7, 2026, El Grado is filled to 62.8% of its total capacity, holding roughly 251 hm³ of water out of a maximum 400 hm³. At this level the reservoir is within its normal operating range. Of that total, about 360 hm³ is usable (live) storage.

Over the most recent week on record the fill level has fallen by 4.2 percentage points, and it is 3.8 points above its level on the same date a year earlier.

Across the readings we hold for El Grado — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 21.5% (December 16, 2025) to a high of 100.0% (March 11, 2025). On average the reservoir is fullest around March and at its lowest around October.

It is operated by CHE primarily for multiple purposes. It lies within the Ebro basin at 42.219°N, 0.225°E.