Alcollarin
Cáceres · Extremadura · Guadiana
Capacity
52 hm³
Coordinates
39.248°N, 5.747°W
Operator
CHSU
36.5% full
Current fill
36.5%vs 13 Oct 2026
0.0 ppstable
vs 1 year ago
+36.5 ppyear-over-year
Trend
→stable
Drought context
Storage vs October average
190%of normal
36.5% full on 2026-10-19, against an average of 19.2% for October across 6 years of readings (+17.3 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Alcollarín 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 −0.68). Rain, not storage.
EU drought indicator · 11 October 2026
Recoverysoil moisture recovering
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 | 52 hm³ |
| Primary use | Multi-purpose |
| Operator | CHSU |
| Province | Cáceres |
| Region | Extremadura |
| River basin | Guadiana |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.248°N, 5.747°W · Open in Google Maps
About Alcollarin
As of October 19, 2026, Alcollarin is filled to 36.5% of its total capacity, holding 19 hm³ of water out of a maximum 52 hm³. At this level the reservoir is low.
Since October 13, 2026 the fill level has held broadly steady (+0.0 pp), and it is 36.5 points above its level on the same date a year earlier.
Across the readings we hold for Alcollarin — 264 data points between October 5, 2021 and October 19, 2026 — the level has ranged from a low of 0.0% (September 9, 2025) to a high of 78.8% (April 16, 2024). On average the reservoir is fullest around April and at its lowest around November.
It is operated by CHSU primarily for multiple purposes. It lies within the Guadiana basin at 39.248°N, 5.747°W.
Key facts
- Current fill level
- 36.5% of total capacity
- Water stored
- 19 hm³
- Total capacity
- 52 hm³
- Change since October 13, 2026
- No change
- Year-on-year
- ▲ 36.5 pp
- Primary use
- Multipurpose
- River basin
- Guadiana
- Operator
- CHSU
- Coordinates
- 39.248°N, 5.747°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 36.5% | 19 |
| 13 Oct 2026 | 36.5% | 19 |
| 6 Oct 2026 | 36.5% | 19 |
| 29 Sep 2026 | 36.5% | 19 |
| 22 Sep 2026 | 36.5% | 19 |
| 15 Sep 2026 | 36.5% | 19 |
| 8 Sep 2026 | 36.5% | 19 |
| 1 Sep 2026 | 38.5% | 20 |
| 25 Aug 2026 | 38.5% | 20 |
| 18 Aug 2026 | 38.5% | 20 |
| 11 Aug 2026 | 38.5% | 20 |
| 4 Aug 2026 | 38.5% | 20 |