Castro de las Cogotas

As of September 7, 2026, Castro de las Cogotas is filled to 43.1% of its total capacity, holding roughly 25 hm³ of water out of a maximum 58 hm³. At this level the reservoir is within its normal operating range. Of that total, about 52 hm³ is usable (live) storage.

Over the most recent week on record the fill level has fallen by 3.5 percentage points, and it is 15.5 points below its level on the same date a year earlier.

Across the readings we hold for Castro de las Cogotas — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 13.6% (October 15, 2019) to a high of 100.0% (May 10, 2022). On average the reservoir is fullest around May and at its lowest around October.

It is operated by CHD primarily for multiple purposes. It lies within the Duero basin at 40.718°N, 4.698°W.