Sistema Alto Caldarés
Huesca · Aragon · Ebro
Capacity
18 hm³
Coordinates
42.780°N, 0.228°W
Operator
CHE
22.2% full
Current fill
22.2%vs 13 Oct 2026
0.0 ppstable
vs 1 year ago
0.0 ppyear-over-year
Trend
→stable
Drought context
Storage vs October average
50%of normal
22.2% full on 2026-10-19, against an average of 44.0% for October across 9 years of readings (-21.8 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Sistema Alto Caldarés 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 −0.53). 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 | 18 hm³ |
| Primary use | Multi-purpose |
| Operator | CHE |
| Province | Huesca |
| Region | Aragon |
| River basin | Ebro |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.780°N, 0.228°W · Open in Google Maps
About Sistema Alto Caldarés
As of October 19, 2026, Sistema Alto Caldarés is filled to 22.2% of its total capacity, holding 4 hm³ of water out of a maximum 18 hm³. At this level the reservoir is low.
Since October 13, 2026 the fill level has held broadly steady (+0.0 pp), and it sits close to where it was a year earlier.
Across the readings we hold for Sistema Alto Caldarés — 419 data points between October 16, 2018 and October 19, 2026 — the level has ranged from a low of 5.6% (December 14, 2021) to a high of 66.7% (October 23, 2018). On average the reservoir is fullest around November and at its lowest around April.
It is operated by CHE primarily for multiple purposes. It lies within the Ebro basin at 42.780°N, 0.228°W.
Key facts
- Current fill level
- 22.2% of total capacity
- Water stored
- 4 hm³
- Total capacity
- 18 hm³
- Change since October 13, 2026
- No change
- Year-on-year
- No change
- Primary use
- Multipurpose
- River basin
- Ebro
- Operator
- CHE
- Coordinates
- 42.780°N, 0.228°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 22.2% | 4 |
| 13 Oct 2026 | 22.2% | 4 |
| 6 Oct 2026 | 22.2% | 4 |
| 29 Sep 2026 | 22.2% | 4 |
| 22 Sep 2026 | 22.2% | 4 |
| 15 Sep 2026 | 22.2% | 4 |
| 8 Sep 2026 | 22.2% | 4 |
| 1 Sep 2026 | 22.2% | 4 |
| 25 Aug 2026 | 22.2% | 4 |
| 18 Aug 2026 | 22.2% | 4 |
| 11 Aug 2026 | 22.2% | 4 |
| 4 Aug 2026 | 22.2% | 4 |