Ulldecona
Castelló / Castellón · Valencian Community · Júcar
Capacity
11 hm³
Coordinates
40.672°N, 0.233°E
Operator
CHJ
Current fill
81.8%vs 7 days ago
0.0%stable
vs 1 year ago
0.0%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 11 hm³ |
| Usable capacity | 9.9 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. 40.672, 0.233 · Open in Google Maps
About Ulldecona
As of June 9, 2026, Ulldecona is filled to 81.8% of its total capacity, holding roughly 9 hm³ of water out of a maximum 11 hm³. At this level the reservoir is high. Of that total, about 10 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Ulldecona — 418 data points between June 12, 2018 and June 9, 2026 — the level has ranged from a low of 0.0% (June 12, 2018) to a high of 81.8% (November 27, 2018). On average the reservoir is fullest around March and at its lowest around October.
It is operated by CHJ primarily for multiple purposes. It lies within the Júcar basin at 40.672°N, 0.233°E.
Key facts
- Current fill level
- 81.8%
- Water stored
- 9 hm³
- Total capacity
- 11 hm³
- Usable capacity
- 10 hm³
- 7-day change
- No change
- Year-on-year
- No change
- Primary use
- Multipurpose
- River basin
- Júcar
- Operator
- CHJ
- Coordinates
- 40.672°N, 0.233°E
- Last updated
- June 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Jun 2026 | 81.8% | 9 |
| 2 Jun 2026 | 81.8% | 9 |
| 26 May 2026 | 81.8% | 9 |
| 19 May 2026 | 81.8% | 9 |
| 12 May 2026 | 81.8% | 9 |
| 5 May 2026 | 81.8% | 9 |
| 28 Apr 2026 | 81.8% | 9 |
| 21 Apr 2026 | 81.8% | 9 |
| 14 Apr 2026 | 81.8% | 9 |
| 7 Apr 2026 | 81.8% | 9 |
| 31 Mar 2026 | 81.8% | 9 |
| 24 Mar 2026 | 81.8% | 9 |
Frequently asked questions
What is the current water level of Ulldecona?
As of June 9, 2026, Ulldecona is at 81.8% of its capacity, holding approximately 9 hm³ of water, according to MITECO data.
Is Ulldecona reservoir full?
No. As of June 9, 2026, Ulldecona is high at 81.8% of its capacity, so it is not full.
Is the water level at Ulldecona rising or falling?
The level at Ulldecona has been broadly stable over the latest week on record (0.0 points).
How much water can Ulldecona hold?
Ulldecona has a total capacity of 11 hm³, of which about 10 hm³ is usable storage.
Where is Ulldecona reservoir located?
Ulldecona is located in Castelló / Castellón, Valencian Community, Spain, within the Júcar basin (coordinates 40.672°N, 0.233°E).
What is Ulldecona used for?
Ulldecona is used primarily for multiple purposes, and is managed by CHJ.