Arenos
Castelló / Castellón · Valencian Community · Júcar
Capacity
137 hm³
Coordinates
40.096°N, 0.565°W
Operator
CHJ
38.0% full
Current fill
38.0%vs 7 days ago
-0.7%losing
vs 1 year ago
-0.7%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 137 hm³ |
| Usable capacity | 123.3 hm³ |
| Primary use | Multi-purpose |
| Operator | CHJ |
| Province | Castelló / Castellón |
| Autonomous community | Valencian Community |
| River basin | Júcar |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.096, -0.565 · Open in Google Maps
About Arenos
As of September 7, 2026, Arenos is filled to 38.0% of its total capacity, holding roughly 52 hm³ of water out of a maximum 137 hm³. At this level the reservoir is low. Of that total, about 123 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.7 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Arenos — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 8.0% (October 15, 2024) to a high of 70.8% (April 23, 2019). On average the reservoir is fullest around April and at its lowest around October.
It is operated by CHJ primarily for multiple purposes. It lies within the Júcar basin at 40.096°N, 0.565°W.
Key facts
- Current fill level
- 38.0%
- Water stored
- 52 hm³
- Total capacity
- 137 hm³
- Usable capacity
- 123 hm³
- 7-day change
- ▼ 0.7 pts
- Year-on-year
- ▼ 0.7 pts
- Primary use
- Multipurpose
- River basin
- Júcar
- Operator
- CHJ
- Coordinates
- 40.096°N, 0.565°W
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 38.0% | 52 |
| 1 Sep 2026 | 38.7% | 53 |
| 25 Aug 2026 | 39.4% | 54 |
| 18 Aug 2026 | 40.9% | 56 |
| 11 Aug 2026 | 40.9% | 56 |
| 4 Aug 2026 | 41.6% | 57 |
| 28 Jul 2026 | 42.3% | 58 |
| 21 Jul 2026 | 42.3% | 58 |
| 14 Jul 2026 | 43.8% | 60 |
| 7 Jul 2026 | 43.8% | 60 |
| 30 Jun 2026 | 43.8% | 60 |
| 23 Jun 2026 | 44.5% | 61 |