Alcollarin
Cáceres · Extremadura · Guadiana
Capacity
52 hm³
Coordinates
39.248°N, 5.747°W
Operator
CHSU
38.5% full
Current fill
38.5%vs 7 days ago
-1.9%losing
vs 1 year ago
+36.6%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 52 hm³ |
| Usable capacity | 46.8 hm³ |
| Primary use | Multi-purpose |
| Operator | CHSU |
| Province | Cáceres |
| Autonomous community | Extremadura |
| River basin | Guadiana |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.248, -5.747 · Open in Google Maps
About Alcollarin
As of July 27, 2026, Alcollarin is filled to 38.5% of its total capacity, holding roughly 20 hm³ of water out of a maximum 52 hm³. At this level the reservoir is low. Of that total, about 47 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 1.9 percentage points, and it is 36.6 points above its level on the same date a year earlier.
Across the readings we hold for Alcollarin — 252 data points between October 5, 2021 and July 27, 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 September.
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
- 38.5%
- Water stored
- 20 hm³
- Total capacity
- 52 hm³
- Usable capacity
- 47 hm³
- 7-day change
- ▼ 1.9 pts
- Year-on-year
- ▲ 36.6 pts
- Primary use
- Multipurpose
- River basin
- Guadiana
- Operator
- CHSU
- Coordinates
- 39.248°N, 5.747°W
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 38.5% | 20 |
| 20 Jul 2026 | 40.4% | 21 |
| 14 Jul 2026 | 40.4% | 21 |
| 7 Jul 2026 | 40.4% | 21 |
| 30 Jun 2026 | 40.4% | 21 |
| 23 Jun 2026 | 40.4% | 21 |
| 16 Jun 2026 | 42.3% | 22 |
| 9 Jun 2026 | 42.3% | 22 |
| 2 Jun 2026 | 42.3% | 22 |
| 26 May 2026 | 42.3% | 22 |
| 19 May 2026 | 42.3% | 22 |
| 12 May 2026 | 42.3% | 22 |
Frequently asked questions
What is the current water level of Alcollarin?
As of July 27, 2026, Alcollarin is at 38.5% of its capacity, holding approximately 20 hm³ of water, according to embalses.net data.
Is Alcollarin reservoir full?
No. As of July 27, 2026, Alcollarin is low at 38.5% of its capacity, so it is not full.
Is the water level at Alcollarin rising or falling?
The level at Alcollarin is falling — it dropped 1.9 percentage points over the latest week on record.
How much water can Alcollarin hold?
Alcollarin has a total capacity of 52 hm³, of which about 47 hm³ is usable storage.
Where is Alcollarin reservoir located?
Alcollarin is located in Cáceres, Extremadura, Spain, within the Guadiana basin (coordinates 39.248°N, 5.747°W).
What is Alcollarin used for?
Alcollarin is used primarily for multiple purposes, and is managed by CHSU.