Rumblar

As of September 7, 2026, Rumblar is filled to 60.7% of its total capacity, holding roughly 85 hm³ of water out of a maximum 140 hm³. At this level the reservoir is within its normal operating range. Of that total, about 126 hm³ is usable (live) storage.

Over the most recent week on record the fill level has held broadly steady (-0.7 pts), and it is 4.3 points below its level on the same date a year earlier.

Across the readings we hold for Rumblar — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 10.0% (November 15, 2022) to a high of 100.0% (March 25, 2025). On average the reservoir is fullest around April and at its lowest around November.

It is operated by CHGu primarily for multiple purposes. It lies within the Guadalquivir basin at 38.189°N, 3.789°W.