Santa Ana
Huesca · Aragon · Ebro
Capacity
237 hm³
Coordinates
41.896°N, 0.588°E
Operator
CHE
51.5% full
Current fill
51.5%vs 7 days ago
-1.7%losing
vs 1 year ago
-3.8%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 237 hm³ |
| Usable capacity | 213.3 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. 41.896, 0.588 · Open in Google Maps
About Santa Ana
As of September 7, 2026, Santa Ana is filled to 51.5% of its total capacity, holding roughly 122 hm³ of water out of a maximum 237 hm³. At this level the reservoir is within its normal operating range. Of that total, about 213 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 1.7 percentage points, and it is 3.8 points below its level on the same date a year earlier.
Across the readings we hold for Santa Ana — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 38.8% (August 16, 2022) to a high of 86.5% (April 30, 2024). On average the reservoir is fullest around April and at its lowest around September.
It is operated by CHE primarily for multiple purposes. It lies within the Ebro basin at 41.896°N, 0.588°E.
Key facts
- Current fill level
- 51.5%
- Water stored
- 122 hm³
- Total capacity
- 237 hm³
- Usable capacity
- 213 hm³
- 7-day change
- ▼ 1.7 pts
- Year-on-year
- ▼ 3.8 pts
- Primary use
- Multipurpose
- River basin
- Ebro
- Operator
- CHE
- Coordinates
- 41.896°N, 0.588°E
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 51.5% | 122 |
| 1 Sep 2026 | 53.2% | 126 |
| 25 Aug 2026 | 53.6% | 127 |
| 18 Aug 2026 | 51.5% | 122 |
| 11 Aug 2026 | 50.2% | 119 |
| 4 Aug 2026 | 49.4% | 117 |
| 28 Jul 2026 | 50.2% | 119 |
| 21 Jul 2026 | 52.3% | 124 |
| 14 Jul 2026 | 52.7% | 125 |
| 7 Jul 2026 | 54.4% | 129 |
| 30 Jun 2026 | 59.1% | 140 |
| 23 Jun 2026 | 60.3% | 143 |