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 7 days ago
0.0%stable
vs 1 year ago
0.0%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 18 hm³ |
| Usable capacity | 16.2 hm³ |
| Primary use | Multi-purpose |
| Operator | CHE |
| Province | Huesca |
| Autonomous community | Aragon |
| River basin | Ebro |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.780, -0.228 · Open in Google Maps
About Sistema Alto Caldarés
As of September 7, 2026, Sistema Alto Caldarés is filled to 22.2% of its total capacity, holding roughly 4 hm³ of water out of a maximum 18 hm³. At this level the reservoir is low. Of that total, about 16 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Sistema Alto Caldarés — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 5.6% (December 14, 2021) to a high of 77.8% (September 11, 2018). On average the reservoir is fullest around October 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%
- Water stored
- 4 hm³
- Total capacity
- 18 hm³
- Usable capacity
- 16 hm³
- 7-day change
- No change
- Year-on-year
- No change
- Primary use
- Multipurpose
- River basin
- Ebro
- Operator
- CHE
- Coordinates
- 42.780°N, 0.228°W
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 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 |
| 28 Jul 2026 | 22.2% | 4 |
| 21 Jul 2026 | 22.2% | 4 |
| 14 Jul 2026 | 22.2% | 4 |
| 7 Jul 2026 | 22.2% | 4 |
| 30 Jun 2026 | 22.2% | 4 |
| 23 Jun 2026 | 22.2% | 4 |