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 13 Oct 2026
0.0 ppstable
vs 1 year ago
0.0 ppyear-over-year
Trend
→stable
Drought context
Storage vs October average
122%of normal
38.0% full on 2026-10-19, against an average of 31.1% for October across 9 years of readings (+6.9 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Arenós had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +0.67). Rain, not storage.
EU drought indicator · 11 October 2026
Noneno drought signal
The European Drought Observatory's combined reading of rain, soil moisture and vegetation at this point. Watch means rain has been short, Warning that the soil has dried out, Alert that vegetation is visibly stressed; Recovery means the shortfall is easing. Ground conditions, not the reservoir's storage. Spain drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 137 hm³ |
| Primary use | Multi-purpose |
| Operator | CHJ |
| Province | Castelló / Castellón |
| Region | Valencian Community |
| River basin | Júcar |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.096°N, 0.565°W · Open in Google Maps
About Arenos
As of October 19, 2026, Arenos is filled to 38.0% of its total capacity, holding 52 hm³ of water out of a maximum 137 hm³. At this level the reservoir is low.
Since October 13, 2026 the fill level has held broadly steady (+0.0 pp), and it sits close to where it was a year earlier.
Across the readings we hold for Arenos — 419 data points between October 16, 2018 and October 19, 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% of total capacity
- Water stored
- 52 hm³
- Total capacity
- 137 hm³
- Change since October 13, 2026
- No change
- Year-on-year
- No change
- Primary use
- Multipurpose
- River basin
- Júcar
- Operator
- CHJ
- Coordinates
- 40.096°N, 0.565°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 38.0% | 52 |
| 13 Oct 2026 | 38.0% | 52 |
| 6 Oct 2026 | 38.0% | 52 |
| 29 Sep 2026 | 38.0% | 52 |
| 22 Sep 2026 | 38.0% | 52 |
| 15 Sep 2026 | 38.0% | 52 |
| 8 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 |