El Atance
Guadalajara · Castile-La Mancha · Tajo
Capacity
35 hm³
Coordinates
41.088°N, 2.777°W
Operator
CHT
51.4% full
Current fill
51.4%vs 7 days ago
0.0%stable
vs 1 year ago
-28.6%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 35 hm³ |
| Usable capacity | 31.5 hm³ |
| Primary use | Multi-purpose |
| Operator | CHT |
| Province | Guadalajara |
| Autonomous community | Castile-La Mancha |
| River basin | Tajo |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.088, -2.777 · Open in Google Maps
About El Atance
As of September 7, 2026, El Atance is filled to 51.4% of its total capacity, holding roughly 18 hm³ of water out of a maximum 35 hm³. At this level the reservoir is within its normal operating range. Of that total, about 32 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 28.6 points below its level on the same date a year earlier.
Across the readings we hold for El Atance — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 14.3% (October 3, 2023) to a high of 88.6% (June 17, 2025). On average the reservoir is fullest around June and at its lowest around October.
It is operated by CHT primarily for multiple purposes. It lies within the Tajo basin at 41.088°N, 2.777°W.
Key facts
- Current fill level
- 51.4%
- Water stored
- 18 hm³
- Total capacity
- 35 hm³
- Usable capacity
- 32 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 28.6 pts
- Primary use
- Multipurpose
- River basin
- Tajo
- Operator
- CHT
- Coordinates
- 41.088°N, 2.777°W
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 51.4% | 18 |
| 1 Sep 2026 | 51.4% | 18 |
| 25 Aug 2026 | 51.4% | 18 |
| 18 Aug 2026 | 51.4% | 18 |
| 11 Aug 2026 | 54.3% | 19 |
| 4 Aug 2026 | 54.3% | 19 |
| 28 Jul 2026 | 54.3% | 19 |
| 21 Jul 2026 | 54.3% | 19 |
| 14 Jul 2026 | 54.3% | 19 |
| 7 Jul 2026 | 54.3% | 19 |
| 30 Jun 2026 | 54.3% | 19 |
| 23 Jun 2026 | 57.1% | 20 |