Alarcón
Cuenca · Castile-La Mancha · Júcar
Capacity
1,118 hm³
Coordinates
39.657°N, 2.218°W
Operator
CHJ
72.1% full
Current fill
72.1%vs 7 days ago
-0.4%losing
vs 1 year ago
+10.1%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 1,118 hm³ |
| Usable capacity | 1,006.2 hm³ |
| Primary use | Multi-purpose |
| Operator | CHJ |
| Province | Cuenca |
| Autonomous community | Castile-La Mancha |
| River basin | Júcar |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.657, -2.218 · Open in Google Maps
About Alarcón
As of September 7, 2026, Alarcón is filled to 72.1% of its total capacity, holding roughly 806 hm³ of water out of a maximum 1,118 hm³. At this level the reservoir is within its normal operating range. Of that total, about 1,006 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.4 pts), and it is 10.1 points above its level on the same date a year earlier.
Across the readings we hold for Alarcón — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 30.6% (November 12, 2019) to a high of 79.5% (April 21, 2026). On average the reservoir is fullest around May and at its lowest around October.
It is operated by CHJ primarily for multiple purposes. It lies within the Júcar basin at 39.657°N, 2.218°W.
Key facts
- Current fill level
- 72.1%
- Water stored
- 806 hm³
- Total capacity
- 1,118 hm³
- Usable capacity
- 1,006 hm³
- 7-day change
- ▼ 0.4 pts
- Year-on-year
- ▲ 10.1 pts
- Primary use
- Multipurpose
- River basin
- Júcar
- Operator
- CHJ
- Coordinates
- 39.657°N, 2.218°W
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 72.1% | 806 |
| 1 Sep 2026 | 72.5% | 811 |
| 25 Aug 2026 | 73.2% | 818 |
| 18 Aug 2026 | 73.8% | 825 |
| 11 Aug 2026 | 74.3% | 831 |
| 4 Aug 2026 | 75.0% | 838 |
| 28 Jul 2026 | 75.5% | 844 |
| 21 Jul 2026 | 76.0% | 850 |
| 14 Jul 2026 | 76.7% | 858 |
| 7 Jul 2026 | 77.0% | 861 |
| 30 Jun 2026 | 77.5% | 866 |
| 23 Jun 2026 | 77.9% | 871 |