Aceña
Tajo
Capacity
24 hm³
Coordinates
40.624°N, 4.224°W
Operator
Tajo
54.2% full
Current fill
54.2%vs 13 Oct 2026
-4.1 pplosing
vs 1 year ago
-8.3 ppyear-over-year
Trend
↓falling
Drought context
Storage vs October average
129%of normal
54.2% full on 2026-10-19, against an average of 41.9% for October across 9 years of readings (+12.3 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Aceña had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.90). Rain, not storage.
EU drought indicator · 11 October 2026
Warningsoil-moisture deficit
The European Drought Observatory's combined reading of rain, soil moisture and vegetation at this point. Watch means rain has been short, Warning that the soil has dried out, Alert that vegetation is visibly stressed; Recovery means the shortfall is easing. Ground conditions, not the reservoir's storage. Spain drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 24 hm³ |
| Primary use | — |
| Operator | Tajo |
| River basin | Tajo |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.624°N, 4.224°W · Open in Google Maps
About Aceña
As of October 19, 2026, Aceña is filled to 54.2% of its total capacity, holding 13 hm³ of water out of a maximum 24 hm³. At this level the reservoir is within its normal operating range.
Since October 13, 2026 the fill level has fallen by 4.1 percentage points, and it is 8.3 points below its level on the same date a year earlier.
Across the readings we hold for Aceña — 419 data points between October 16, 2018 and October 19, 2026 — the level has ranged from a low of 12.5% (October 22, 2019) to a high of 100.0% (February 9, 2021). On average the reservoir is fullest around April and at its lowest around October.
It is operated by Tajo. It lies within the Tajo basin at 40.624°N, 4.224°W.
Key facts
- Current fill level
- 54.2% of total capacity
- Water stored
- 13 hm³
- Total capacity
- 24 hm³
- Change since October 13, 2026
- ▼ 4.1 pp
- Year-on-year
- ▼ 8.3 pp
- River basin
- Tajo
- Operator
- Tajo
- Coordinates
- 40.624°N, 4.224°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 54.2% | 13 |
| 13 Oct 2026 | 58.3% | 14 |
| 6 Oct 2026 | 58.3% | 14 |
| 29 Sep 2026 | 58.3% | 14 |
| 22 Sep 2026 | 62.5% | 15 |
| 15 Sep 2026 | 62.5% | 15 |
| 8 Sep 2026 | 62.5% | 15 |
| 1 Sep 2026 | 66.7% | 16 |
| 25 Aug 2026 | 66.7% | 16 |
| 18 Aug 2026 | 66.7% | 16 |
| 11 Aug 2026 | 70.8% | 17 |
| 4 Aug 2026 | 75.0% | 18 |